CN102495024A - Salinity concentration measuring device and salinity concentration measuring method - Google Patents
Salinity concentration measuring device and salinity concentration measuring method Download PDFInfo
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- CN102495024A CN102495024A CN2011102152734A CN201110215273A CN102495024A CN 102495024 A CN102495024 A CN 102495024A CN 2011102152734 A CN2011102152734 A CN 2011102152734A CN 201110215273 A CN201110215273 A CN 201110215273A CN 102495024 A CN102495024 A CN 102495024A
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Abstract
The invention provides a salinity concentration measuring device and a salinity concentration measuring method by which the dilution rate can be measured simply, automatically and accurately so as to measure the salinity concentration accurately. The salinity concentration measuring device comprises a soluble solid amount measuring unit for measuring the soluble solid amounts of a stoste and a diluent; a dilution rate computing unit computing the dilution rate according to the soluble solid amounts of the stoste and the diluent; a conductivity measuring unit for measuring the conductivity of the dilution; and a salinity concentration measuring unit for computing the salinity concentration of the stoste according to the dilution rate and the conductivity.
Description
Technical field
The present invention relates to be used for measure the device and the method for the salt concentration of sample, particularly diluted sample and measure the device and method of salt concentration accurately easily.
Background technology
As the salinometer of the salt concentration that is used for measuring sample, the known salinometer (patent documentation 1) that is converted into the measured value of the conductivity of sample according to the linear relationship of salt concentration and conductivity the conductivity formula of salt concentration.
But, in the high sample of salt concentration, because salt concentration and conductivity are not linear relationships, so can not use the salinometer of conductivity formula to measure the salinity of high concentration.In addition; In sample, comprise under the situation of the ion beyond a lot of sodions,, in sample, comprise under the organic situation of a lot of amino acid or wet goods because these ionic conductivities increase; Because organism reduces to the conductivity of adhering to of electrode, can't correctly ask salt concentration.
Therefore; At the sample of high concentration and comprise under the situation of various ions or organic sample; Carry out following method: with the stoste of predetermined dilution ratio diluted sample; Measure the salt concentration of dilution then, this salt concentration measured value multiply by the salt concentration that dilution ratio is obtained stoste.But,,, then have the problem that can't correctly obtain salt concentration if the precision of dilution ratio is low even lower ion or organic influence beyond the sodion through dilution.In addition, in order to improve the precision of dilution ratio, must use high-precision precision balance and high performance dispenser, the problem of these operations need be expertly carried out in existence.
Patent documentation 1: TOHKEMY 2006-349450 communique
Summary of the invention
The present invention to make in order addressing the above problem and to propose, and its purpose is to provide a kind of salt concentration determinator and salt concentration assay method, and it can be simply and automatically obtains dilution ratio accurately, can measure salt concentration accurately thus.
To achieve these goals, salt concentration determinator of the present invention has: the soluble solids quantitative determination unit of the stoste of mensuration sample and the soluble solids amount of dilution; Calculate the dilution ratio computing unit of the dilution ratio of dilution according to the soluble solids amount of stoste and dilution; Measure the conductance measurement unit of the conductivity of dilution; With salt concentration computing unit according to the salt concentration of dilution ratio and Conductivity Calculation stoste.
In addition, salt concentration assay method of the present invention comprises: the step of the soluble solids amount of the stoste of mensuration sample; The step that dilution stoste is made dilution; Measure the step of the soluble solids amount of dilution; Calculate the step of the dilution ratio of dilution according to the soluble solids amount of stoste and dilution; Measure the step of the conductivity of dilution; With step according to the salt concentration of dilution ratio and Conductivity Calculation stoste.
According to the present invention, can provide can be simply and automatically obtain dilution ratio accurately, can measure the salt concentration determinator and the salt concentration assay method of salt concentration thus accurately.
Description of drawings
Fig. 1 is the summary structural drawing of the salt concentration determinator of embodiment of the present invention.
Fig. 2 representes the relation of Brix measured value and dilute concentration about various samples.
Fig. 3 representes the relation of dilution ratio and salt concentration measured value about various samples.
The salt concentration scaled value of the stoste that Fig. 4 representes about various samples to try to achieve according to the salt concentration measured value of various dilution ratios and dilution and the relation of dilution ratio.
Fig. 5 is the process flow diagram of the salt concentration assay method in the embodiment of the present invention.
Fig. 6 representes according to the stoste salt concentration scaled value under the situation of the ratio calculating dilution ratio of the Brix measured value of stoste and dilution.
Fig. 7 representes the error according to the dilution ratio under the situation of the ratio calculating dilution ratio of Brix value.
Symbol description
10 salt concentration determinators
12 shells
14 openings
16 sample putting surfaces
18 prisms
20 light sources
22 optical detection parts
24 soluble solids amount calculating parts
26 first electrodes
28 second electrodes
34 Conductivity Calculation portions
36 interfaces
38 treatment circuits
40 s operation control portions
42 data store
44 operating portions
46 display parts
48 dilution ratio calculating parts
50 dilution ratio detection units
52 salt concentration calculating parts
The stoste of S sample
The dilution of S ' sample
Embodiment
With reference to Fig. 1, the salt concentration determinator 10 of embodiment of the present invention is provided with opening 14 on its shell 12, in this opening 14, is provided for putting the stoste S of sample and the sample putting surface 16 of dilution S '.
Prism 18 forms at least a portion of sample putting surface 16, so that form and the stoste S of sample or the boundary surface of dilution S '.Light source 20 makes light incide the boundary surface of stoste S or the dilution S ' and the prism 18 of sample from prism 18 1 sides.Optical detection part 22 receive from light source 20, at the stoste S of sample or dilution S ' light with the boundary surface reflection of prism 18.In optical detection part 22, for example use one dimension imageing sensor or two-dimensional image sensor etc. that the photoelectric sensor of a plurality of photo detectors is arranged.These prisms 18, light source 20, photodetector 22 also can be identical with the prism, light source and the photodetector that use in the general refractometer.
Soluble solids amount calculating part 24 calculates the Brix value of stoste S and dilution S ' according to the output of photodetector 22.Here, the value that the weight (g) that is defined as the sample dilution to " dilution ratio " obtains divided by the weight (g) of the sample stoste that comprises in this dilution.
S operation control portion 40 except the soluble solids amount calculating part 24 and Conductivity Calculation portion 34 of narration in front, also comprises dilution ratio calculating part 48, dilution ratio detection unit 50 and salt concentration calculating part 52.Dilution ratio calculating part 48 calculates dilution ratio according to following investigation according to the Brix value.
Table 1 expression is converted into these refractive indexes the result of Brix value about the refractive index of the dilution of various samples mensuration stostes and various dilute concentrations.Here, be defined as the weight (g) of the sample stoste that in the 100g dilution, comprises, dilute concentration (%)=100/ dilution ratio to " dilute concentration (%) ".On one side in order to make dilute concentration become 5%, 10%, 15%, 20%, 25%, 50%, 75% and gravimetry strictly, sample stoste added pure water process sample dilution on one side.
Table 1
| Dilute concentration (%) | 5 | 10 | 15 | 20 | 25 | 50 | 70 | 100 |
| Dense mouthful of soy sauce | 1.88 | 3.70 | 5.60 | 7.40 | 9.20 | 18.10 | 26.64 | 35.10 |
| Thin soy sauce | 1.80 | 3.60 | 5.40 | 7.20 | 9.00 | 17.70 | 26.14 | 34.38 |
| Low-salt soy sauce | 1.60 | 3.12 | 4.70 | 6.30 | 7.88 | 15.60 | 23.00 | 30.30 |
| Soy sauce | 2.20 | 4.40 | 6.50 | 8.70 | 10.80 | 21.32 | 31.50 | 41.44 |
| Bechamel | 2.10 | 4.30 | 6.40 | 8.56 | 10.68 | 21.10 | 31.30 | 41.38 |
| The sweet dew soy sauce | 2.30 | 4.50 | 6.70 | 8.94 | 11.18 | 21.94 | 32.40 | 42.52 |
| Sudden and violent pickled cabbage | 0.20 | 0.44 | 0.70 | 0.90 | 1.20 | 2.38 | 3.60 | 4.80 |
| The vinegar Chinese onion that salts down | 1.50 | 3.14 | 4.72 | 6.32 | 7.90 | 15.80 | 23.70 | 31.60 |
| The soy sauce salting cucumber | 0.50 | 1.00 | 1.52 | 2.10 | 2.60 | 5.20 | 7.80 | 10.42 |
| Catsup | 1.54 | 3.10 | 4.70 | 6.28 | 7.92 | 15.98 | 24.10 | 32.40 |
| Face halogen | 0.86 | 1.74 | 2.60 | 3.46 | 4.32 | 8.70 | 12.90 | 17.20 |
| Dense baste | 1.68 | 3.50 | 5.30 | 7.14 | 8.92 | 18.14 | 27.74 | 37.58 |
| In dense baste | 1.50 | 3.10 | 4.70 | 6.36 | 8.02 | 16.12 | 24.30 | 32.56 |
| Canton style roast pork condiments juice | 2.10 | 4.56 | 6.66 | 9.00 | 11.22 | 22.04 | 33.14 | 44.06 |
| The sauce Boiled fish | 1.92 | 4.06 | 6.14 | 8.38 | 10.46 | 21.16 | 32.14 | 42.98 |
When with reference to the Brix measured value as transverse axis, when making Fig. 2 of table 1 pictorialization to dilute concentration as the longitudinal axis, can know that the Brix measured value is different with sample, but the Brix measured value of each sample and dilute concentration cardinal principle are linear.In addition, be that 0% o'clock Brix measured value also is 0 from dilute concentration, can suppose the proportional relation of Brix measured value and dilute concentration.According to this supposition, the Brix measured value through making stoste can irrespectively be calculated dilution ratio with sample divided by the Brix measured value of dilution.
Once more with reference to Fig. 1, dilution ratio detection unit 50 judges that dilution ratios are whether in being fit to the scope that salt concentration measures.Be fit to the scope of the dilution ratio of salt concentration mensuration, decide according to following investigation.
Table 2 expression measure stostes about the various samples identical with table 1 and with table 1 conductivity of the dilution of identical various dilution ratios, according to the result of the salt concentration of each stoste of these Conductivity Calculation and dilution.Same with table 1, on one side in order to make dilute concentration become 5%, 10%, 15%, 20%, 25%, 50%, 75% and gravimetry strictly, on one side to sample stoste add pure water process the sample dilution.
Table 2
| Dilute concentration (%) | 5 | 10 | 15 | 20 | 25 | 50 | 70 | 100 |
| Dilution ratio | 20.00 | 10.00 | 6.67 | 5.00 | 4.00 | 2.00 | 1.33 | 1.00 |
| Dense mouthful of soy sauce | 0.730 | 1.518 | 2.258 | 2.912 | 3.580 | 6.180 | 7.780 | 7.920 |
| Thin soy sauce | 0.820 | 1.694 | 2.490 | 3.200 | 4.000 | 7.040 | 8.800 | 9.120 |
| Low-salt soy sauce | 0.426 | 0.850 | 1.260 | 1.678 | 2.046 | 3.540 | 4.320 | 4.600 |
| Soy sauce | 0.784 | 1.596 | 2.326 | 3.000 | 3.700 | 6.140 | 7.200 | 6.620 |
| Bechamel | 0.740 | 1.490 | 2.216 | 2.838 | 3.500 | 5.740 | 6.640 | 5.980 |
| The sweet dew soy sauce | 0.718 | 1.420 | 2.108 | 2.710 | 3.240 | 5.400 | 6.120 | 5.560 |
| Sudden and violent pickled cabbage | 0.108 | 0.216 | 0.340 | 0.438 | 0.540 | 1.104 | 1.728 | 2.206 |
| The vinegar Chinese onion that salts down | 0.100 | 0.180 | 0.268 | 0.346 | 0.416 | 0.710 | 0.860 | 0.866 |
| The soy sauce salting cucumber | 0.120 | 0.250 | 0.370 | 0.480 | 0.590 | 1.190 | 1.764 | 2.210 |
| Catsup | 0.140 | 0.280 | 0.400 | 0.500 | 0.614 | 1.054 | 1.286 | 1.316 |
| Face halogen | 0.180 | 0.360 | 0.522 | 0.690 | 0.870 | 1.706 | 2.358 | 2.870 |
| Dense baste | 0.242 | 0.470 | 0.710 | 0.910 | 1.090 | 1.846 | 2.134 | 2.044 |
| In dense baste | 0.230 | 0.440 | 0.644 | 0.856 | 1.032 | 1.832 | 2.262 | 2.376 |
| Canton style roast pork condiments juice | 0.340 | 0.650 | 0.936 | 1.176 | 1.428 | 2.142 | 2.134 | 1.616 |
| The sauce Boiled fish | 0.338 | 0.660 | 0.960 | 1.240 | 1.514 | 2.396 | 2.462 | 2.132 |
When with reference to dilution ratio as transverse axis, when making Fig. 3 of table 2 pictorialization to the salt concentration measured value as the longitudinal axis; The curve of the relation of expression dilution ratio and salt concentration measured value; In a part of sample (for example Canton style roast pork condiments juice, sauce Boiled fish), near dilution ratio slope variation two times is big.In addition, the big more salt concentration of dilution ratio should be more little, but in a part of sample (for example soy sauce, bechamel, sweet dew soy sauce), dilution ratio is that the salt concentration measured value of 1.33 times dilution becomes than the salt concentration measured value height of stoste.
Fig. 4 be expression dilution ratio as transverse axis, the salt concentration measured value through his-and-hers watches 2 multiply by the chart of the salt concentration scaled value of the stoste that dilution ratio obtains.The salt concentration scaled value that can know the stoste that the dilution of use dilution ratio below 5 times obtained is significantly little.This consideration is the influence of the composition beyond the salinity that in sample, comprises.
On the other hand, it is that the salt concentration scaled value of 10 times the dilution stoste of trying to achieve is little that the ratio that uses the salt concentration scaled value of the stoste that the dilution of 15～20 times of dilution ratios obtains to have uses dilution ratio.This consideration is because excess dilution can't correctly be measured the cause of conductivity.
Therefore, be used for measuring accurately the proper range of the dilution ratio of salt concentration, it is desirable to 5～15 times.In Fig. 4, because be 8～12 times scope at dilution ratio, the salt concentration scaled value of stoste is certain substantially, thus the proper range of dilution ratio better be 8～12 times.
With reference to Fig. 1, salt concentration calculating part 52 is according to the salt concentration of the Conductivity Calculation dilution S ' of dilution S ', according to the salt concentration of dilution S ' and the salt concentration of dilution ratio calculating stoste S once more.
From the conversion formula of refractive index to the Brix value, for example can be according to generating by the refractive index of ICUMSA (international the standardization of granulated sugar analytic approach the council) decision and the relational expression of Brix value.
The calculating formula of dilution ratio as stated, it is desirable to the Brix value of the Brix value/dilution of stoste.Perhaps the calculating formula of dilution ratio also can be based on the formula of the relational expression of the Brix value obtained according to the mensuration result's that carries out in advance regretional analysis and dilute concentration.This relational expression it is desirable to linear function formula (y=ax+b), but according to circumstances in order to consider that nonlinear terms can also be quadratic function formula (y=ax
2+ bx+c) etc.
Operating portion 44, when measuring the Brix value of stoste S and dilution S ', and when measuring the conductivity of dilution S ' etc. by user's operation, to s operation control portion 40 transmission signals.
With reference to Fig. 5 the salt concentration assay method in the embodiment of the present invention is described.
At step S101, measure the Brix value of the soluble solids amount of expression stoste S.The stoste S covering of sample is extended on sample putting surface 16 with the boundary surface that kind of prism 18.When user's operating operation portion 44, send signal from s operation control portion 40 to light source 20, light source 20 is lighted.(arrow of Fig. 1 a), according to the refractive index of stoste S, the part of light reflects in boundary surface, and reflected light receives (the arrow b of Fig. 1) by optical detection part 22 to incide the boundary surface of stoste S and prism 18 from the light of light source 20.
Soluble solids amount calculating part 24 uses the calculating formula of the critical angle of in data store 42, storing in advance and the calculating formula of refractive index; Output according to optical detection part 22; Obtain from the critical angle of prism 18 to stoste S; According to the refractive index of critical angle and known prism 18, obtain the refractive index of stoste S based on Snell law.What then, use was stored in data store 42 in advance is converted into the Brix value to the refractive index of stoste S from refractive index to the conversion formula of Brix value.Refractive index and the Brix value of storage stoste S in data store 42.
At step S103, generate the dilution S ' of sample.Can in sample putting surface 16, the stoste S that in step S101, uses be added pure water make dilution S '.Perhaps, also can in other container, dilute with step S101 in the identical liquid of stoste S that uses make dilution S '.No matter under any situation, can not use special instrument, not measure stoste S in addition and the weight of the pure water that in stoste S, adds, make dilution S ' simply.
At step S105, measure the Brix value of dilution S '.S101 is identical with step, and light source 20 is lighted when user's operating operation portion 44, and optical detection part 22 is received in the light of the boundary surface reflection of dilution S ' and prism 18.Soluble solids amount calculating part 24 uses the calculating formula of the critical angle of in data store 42, storing in advance and the calculating formula of refractive index; Output according to optical detection part 22; Obtain from the critical angle of prism 18, obtain the refractive index of dilution S ' according to the refractive index of critical angle and prism 18 to dilution S '.Then and step S101 same, use in data store 42 storage in advance from the conversion formula of refractive index to the Brix value, be converted into the Brix value to the refractive index of dilution S '.Be stored in the refractive index of dilution S ' and Brix value in the data store 42.
At step S107, calculate from the dilution ratio of stoste S to dilution S '.Preferably when when step S105 measures the Brix value of dilution S ', dilution ratio calculating part 48 automatically calculates dilution ratio.Dilution ratio, the calculating formula of the dilution ratio that use is stored in data store 42 is in advance calculated according to the Brix value of stoste S and dilution S '.Preferably calculate dilution ratio divided by the Brix value of dilution S ' through the Brix value of stoste S.
At step S109, judge that dilution ratio is whether in the proper range of regulation.As stated, be the salt concentration of the stoste of the diluent determining sample that uses sample, the proper range of dilution ratio it is desirable to 5～15 times, and better is 8～12 times.
When judging that through dilution ratio detection unit 50 dilution ratio is not in proper range, at step S111, show error message through display part 46, return step S103, carry out the adjustment of dilution ratio.
Under the situation of dilution ratio less than predetermined proper range; S operation control portion 40 makes the too high error message of display part 46 data representing dilute concentrations (for example " HHH " perhaps " High " etc.), can notify the user in dilution S ', to add pure water more thus and lower dilute concentration.
Surpass at dilution ratio under the situation of predetermined scope; S operation control portion 40 makes the low excessively error message of display part 46 data representing dilute concentrations (for example " LLL " perhaps " Low " etc.), and can notify the user in dilution S ', to add stoste thus increases dilute concentration.
On the other hand, when judging that through dilution ratio detection unit 50 dilution ratio is in proper range, show dilution ratio through display part 46, and be stored in dilution ratio in the data store 42, advance to step S113.
At step S113, measure the conductivity of dilution S '.The mensuration of conductivity is indicated through operating portion 44 according to the user and is begun.But, in step S109, be judged to be dilution ratio not under the situation in proper range, even the user indicates the mensuration that does not also begin conductivity.Thus, can prevent because the high sample damage electrode of salt concentration.
After judging that dilution ratio is in proper range, when the user indicates the mensuration conductivity, between first electrode 26 and second electrode 28, apply alternating voltage, measure electric current and voltage between first electrode 26 and second electrode 28.Conductivity Calculation portion 34 uses the calculating formula of the conductivity of in data store 42, storing in advance, according to the conductivity of electric current of measuring and voltage calculating dilution S '.Be stored in the conductivity of the dilution S ' that calculates in the data store 42.
At step S115, calculate the salt concentration of dilution S '.Salt concentration calculating part 52 uses in data store 42 calculating formula of the salt concentration of storage in advance, according to the salt concentration of the Conductivity Calculation dilution S ' of the dilution S ' that in step S113, calculates.Be stored in the salt concentration of the dilution S ' that calculates in the data store 42.
At step S117, calculate the salt concentration of stoste S.Salt concentration calculating part 52 accesses the salt concentration measured value of dilution ratio and dilution S ' from data store 42, they are multiplied each other calculate the salt concentration of stoste S.The salt concentration of the stoste S that calculates, show through display part 46, and be stored in the data store 42.
In each step in data store 42 the salt concentration scaled value of the conductivity of refractive index storage, the refractive index of stoste S and Brix value, dilution S ' and Brix value, dilution ratio, dilution S ' and salt concentration measured value, stoste S, also can be transferred to other devices via interface 36.
(embodiment)
Fig. 6 representes the ratio according to the Brix measured value of stoste and dilution about various samples, the salt concentration scaled value of the stoste when calculating dilution ratio.
Say that more in detail the Brix measured value through the stoste in the table 1 is calculated dilution ratio divided by the Brix measured value of the dilution of the dilute concentration in this table 1 10%.Then, measure the conductivity of the dilution of above-mentioned dilute concentration 10%, calculate the salt concentration measured value of this dilution, this salt concentration measured value multiply by the salt concentration that dilution ratio is scaled stoste.
Stoste salt concentration scaled value when the solid line of Fig. 6 representes that the ratio as stoste and the Brix value of dilution calculates dilution ratio; Dotted line is represented through existing method, supposes that promptly dilute concentration correctly is that 10% dilution ratio is made as 10 times of stoste salt concentration scaled values of obtaining.As shown in the figure, even calculating under the situation of dilution ratio, also can access with gravimetry percentage strictly and recently make the salt concentration that the existing method of dilution equates substantially as the ratio of Brix value.
Fig. 7 is the dilution of 10 times of the dilution ratios made about gravimetry number percent strictly, is illustrated in the error of the dilution ratio of obtaining among above-mentioned first embodiment.The dilution ratio that calculates as the ratio of the Brix value of stoste and dilution among the embodiment 1 of dilution ratio is 9.41～10.91 times.
On the other hand, the dilution ratio of the reality when the precision determination weight dilution with ± 0.2g is 10 times is 8.17～12.75.The dilution ratio of the reality when the precision determination weight dilution with ± 0.1g is 10 times is 9.00～11.22.
As shown in the figure, can know and calculate among first embodiment of dilution ratio as the ratio of Brix value, can access more high-precision dilution ratio when making dilution through the gravimetry of ± 0.1g precision.Therefore, can know through calculating dilution ratio, compare with using through ± dilution that the gravimetry of 0.1g precision is made as the ratio of Brix value, can precision the salt concentration of highland mensuration sample stoste more.
According to above-mentioned salt concentration determinator and salt concentration assay method; Because the Brix value according to the soluble solids amount of representing stoste and dilution is obtained dilution ratio; So need can easily not carry out the mensuration of salt concentration based on the dilution operation of the gravimetry of strictness.
Because whether the dilution ratio that can judge dilution in preset range, be fit in the scope that salt concentration measures so can be easily adjust to dilution ratio, thus can be with higher precision determination salt concentration.
Through being dilution ratio to likening to of the Brix measured value of stoste and dilution, can likewise calculate dilution ratio for whole samples, so can make determinator and assay method simpler.
The salt concentration determinator and the salt concentration assay method of embodiment of the present invention more than have been described, but have been the invention is not restricted to this.For example the structure of each one of salt concentration determinator can be replaced into the structure arbitrarily with said function.
Claims (8)
1. salt concentration determinator is characterized in that having:
Soluble solids quantitative determination unit, it measures the stoste of sample and the soluble solids amount of dilution;
The dilution ratio computing unit, it calculates the dilution ratio of above-mentioned dilution according to the soluble solids amount of above-mentioned stoste and above-mentioned dilution;
The conductance measurement unit, it measures the conductivity of above-mentioned dilution; With
The salt concentration computing unit, it is according to the salt concentration of above-mentioned dilution ratio and the above-mentioned stoste of above-mentioned Conductivity Calculation.
2. salt concentration determinator according to claim 1 is characterized in that,
The soluble solids amount of above-mentioned dilution ratio computing unit through above-mentioned stoste calculated above-mentioned dilution ratio divided by the soluble solids amount of above-mentioned dilution.
3. salt concentration determinator according to claim 1 and 2 is characterized in that,
Above-mentioned salt concentration computing unit is scaled the salt concentration of above-mentioned dilution to above-mentioned conductivity, makes the salt concentration of above-mentioned dilution multiply by the salt concentration that above-mentioned dilution ratio calculates above-mentioned stoste.
4. according to any described salt concentration determinator in the claim 1 to 3, it is characterized in that also having the dilution ratio identifying unit, it judges above-mentioned dilution ratio whether in predetermined scope, and above-mentioned predetermined scope is 5～15 times.
5. a salt concentration assay method is characterized in that, comprises:
The step of the soluble solids amount of the stoste of mensuration sample;
Dilute above-mentioned stoste and make the step of dilution;
Measure the step of the soluble solids amount of above-mentioned dilution;
According to the soluble solids amount of above-mentioned stoste and above-mentioned dilution, calculate the step of the dilution ratio of above-mentioned dilution;
Measure the step of the conductivity of above-mentioned dilution; With
According to above-mentioned dilution ratio and above-mentioned conductivity, calculate the step of the salt concentration of above-mentioned stoste.
6. salt concentration assay method according to claim 5 is characterized in that,
In calculating the step of above-mentioned dilution ratio, the soluble solids amount through above-mentioned stoste is calculated above-mentioned dilution ratio divided by the soluble solids amount of above-mentioned dilution.
7. according to any described salt concentration assay method in claim 5 or 6, it is characterized in that,
The step of calculating above-mentioned salt concentration comprises:
Be scaled above-mentioned conductivity the step of the salt concentration of above-mentioned dilution; With
Make the salt concentration of above-mentioned dilution multiply by above-mentioned dilution ratio, calculate the step of the salt concentration of above-mentioned stoste.
8. according to any described salt concentration assay method in the claim 5 to 7, it is characterized in that also having and judge the whether step in predetermined scope of above-mentioned dilution ratio, above-mentioned predetermined scope is 5～15 times.
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| CN103630514B (en) * | 2013-11-05 | 2016-09-07 | 杭州陆恒生物科技有限公司 | A kind of Multifunctional digital display refractometer |
| JP6224151B2 (en) * | 2016-03-30 | 2017-11-01 | 三井造船環境エンジニアリング株式会社 | Solution analysis system |
| WO2017169444A1 (en) * | 2016-03-30 | 2017-10-05 | 三井造船環境エンジニアリング株式会社 | Solution analysis system |
| CN113466176B (en) * | 2021-06-28 | 2022-10-21 | 华南师范大学 | Method for detecting metal ions in aqueous solution based on refractive index change rate |
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| GB2062223A (en) * | 1979-10-30 | 1981-05-20 | Hamill B J | Measurement of solute concentration using dilution |
| JPH07167756A (en) * | 1993-12-14 | 1995-07-04 | Mitsubishi Heavy Ind Ltd | Liquid automatic dilution device |
| JPH11258191A (en) * | 1998-03-09 | 1999-09-24 | Japan Organo Co Ltd | Method and apparatus for measurement of concentration of carbonic acid |
| JP2001201476A (en) * | 2000-01-20 | 2001-07-27 | Sumitomo Metal Ind Ltd | Acid densitometer and method for measuring acid concentration |
| TW200408442A (en) * | 2002-08-23 | 2004-06-01 | Sharp Kk | Automatic metal solution dilutor |
| JP2006349450A (en) * | 2005-06-15 | 2006-12-28 | Atago:Kk | Concentration measuring device |
| CN101203763A (en) * | 2005-06-24 | 2008-06-18 | 爱科来株式会社 | Analysis module |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012026912A (en) | 2012-02-09 |
| CN102495024B (en) | 2015-03-11 |
| JP5044774B2 (en) | 2012-10-10 |
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