CN101915723B - Method and device for measuring total organic carbon in waterbody - Google Patents
Method and device for measuring total organic carbon in waterbody Download PDFInfo
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- CN101915723B CN101915723B CN2010102373287A CN201010237328A CN101915723B CN 101915723 B CN101915723 B CN 101915723B CN 2010102373287 A CN2010102373287 A CN 2010102373287A CN 201010237328 A CN201010237328 A CN 201010237328A CN 101915723 B CN101915723 B CN 101915723B
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Abstract
The invention provides a method and a device for measuring total organic carbon in waterbody. The method for measuring the total organic carbon in waterbody comprises the following steps of: detecting the waterbody in an experiment pool to obtain voltage signals corresponding to the organic carbon in the waterbody; performing integration processing on the voltage signals to obtain area values corresponding to the voltage signals; and calculating the concentration of the total organic carbon in the waterbody according to the area values and the preset concentration formula, wherein the preset concentration formula is the linear relation formula between the concentration and the area values. The concentration of the total organic carbon in the waterbody can be accurately and reliably obtained by detecting the waterbody in the experiment pool to obtain the voltage signals corresponding to the organic carbon in the waterbody at different moments, then performing integration processing on the voltage signals to obtain the area values corresponding to the voltage signals and finally substituting the area value in the concentration formula. The invention improves the reliability of the method for measuring the total organic carbon in the waterbody as the detected voltage signals need not to be supposed to be stable or time-invariant.
Description
Technical field
The present invention relates to field of measuring technique, relate in particular to a kind of measuring method and device of total organic carbon in waterbody.
Background technology
At present; Total organic carbon (Total OrganicCarbon in the water body (for example: ocean, lake or rivers); Be designated hereinafter simply as: the overall target that TOC) is organic pollutants in water body; Be one of most important project of marine environmental monitoring, because TOC is an overall target of representing organic substance total amount in the water body with the content of carbon, so TOC more can directly reasonably represent in the water body by the degree of organic pollutants.In the prior art, the measuring technique of TOC is normally carried out on the platform of laboratory in the water body, is specially: the corresponding signal of the TOC of supposition in the water body be steadily or the time constant, then, according to the content of TOC in the detected calculated signals water body.
By on can know; Because the structure and the concentration of water body organism are influenced greatly by space-time; Majority is in interrelated, interactional state; And the signal that the TOC in the measuring method of the TOC supposition water body is corresponding in the prior art be stably or the time constant, the result's of measurement accuracy and representativeness will be under suspicion.Therefore, the reliability of the measuring method of TOC is relatively poor in the prior art.
Summary of the invention
The present invention provides a kind of measuring method and device of total organic carbon in waterbody, in order to solve the relatively poor defective of measuring method reliability of total organic carbon in waterbody in the prior art, realizes the reliability of the measuring method of raising total organic carbon in waterbody.
The present invention provides a kind of measuring method of total organic carbon in waterbody, comprising:
Water body in the experiment pool detects, to obtain the corresponding voltage signal of organic carbon in the said water body;
Said voltage signal is carried out integral processing, to obtain the corresponding area value of said voltage signal;
According to said area value and preset concentration formula, calculate the concentration of the total organic carbon in the said water body, wherein, said preset concentration formula is the linear relationship formula between said concentration and the said area value.
The present invention also provides a kind of measurement mechanism of total organic carbon in waterbody, comprising:
Detection module is used for the water body of experiment pool is detected, to obtain the corresponding voltage signal of organic carbon in the said water body;
The integral processing module is used for said voltage signal is carried out integral processing, to obtain the corresponding area value of said voltage signal;
Computing module is used for calculating the concentration of the total organic carbon in the said water body according to said area value and preset concentration formula, and wherein, said preset concentration formula is the linear relationship formula between said concentration and the said area value.
The measuring method of total organic carbon in waterbody provided by the invention and device are through to detecting in the water body in the experiment pool, to obtain the corresponding voltage signal of organic carbon in the different water bodys constantly; Then, voltage signal is carried out integration to obtain the corresponding area value of voltage signal; At last, bring area value into concentration that the concentration formula just can obtain total organic carbon in waterbody accurately and reliably.Because detected voltage signal need not to be assumed to stably or the time is constant, thereby can detect the concentration of total organic carbon in waterbody in real time accurately, improve the reliability of the measuring method of total organic carbon in waterbody.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the process flow diagram of the measuring method embodiment one of total organic carbon in waterbody of the present invention;
Fig. 2 is the process flow diagram of the measuring method embodiment two of total organic carbon in waterbody of the present invention;
Fig. 3 is the process flow diagram of step 1 among the measuring method embodiment two of total organic carbon in waterbody of the present invention;
Fig. 4 is the process flow diagram of step 3 among the measuring method embodiment two of total organic carbon in waterbody of the present invention;
Fig. 5 is the measurement mechanism example structure synoptic diagram of total organic carbon in waterbody of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Fig. 1 is the process flow diagram of the measuring method embodiment one of total organic carbon in waterbody of the present invention.As shown in Figure 1, the measuring method of present embodiment total organic carbon in waterbody comprises:
The measuring method of present embodiment total organic carbon in waterbody is through to detecting in the water body in the experiment pool, to obtain the corresponding voltage signal of organic carbon in the different water bodys constantly; Then, voltage signal is carried out integration to obtain the corresponding area value of voltage signal; At last, bring area value into concentration that the concentration formula just can obtain total organic carbon in waterbody accurately and reliably.Because detected voltage signal need not to be assumed to stably or the time is constant, thereby can detect the concentration of total organic carbon in waterbody in real time accurately, improve the reliability of the measuring method of present embodiment total organic carbon in waterbody.
Fig. 2 is the process flow diagram of the measuring method embodiment two of total organic carbon in waterbody of the present invention.As shown in Figure 2, the measuring method of present embodiment total organic carbon in waterbody based on the measuring method embodiment one of above-mentioned total organic carbon in waterbody, includes step 1-step 3, and its difference is: before step 1, also comprise:
Step 1 ', in experiment pool, inject ozone, so that the organic carbon in ozone and water body reaction is luminous.Concrete; The pairing voltage signal of organic carbon in the acquisition water body for ease; Step 1 in the present embodiment ' ozone is injected in the water body in the experiment pool, ozone will react with organic carbon and luminous, and the big more light intensity of the concentration of total organic carbon in waterbody is just strong more.
Further, carry out integral processing, before the area value that obtains the voltage signal correspondence, also comprise at step 2 pair voltage signal:
Step 2 ', voltage signal is removed the processing of making an uproar.Concrete; Because in the water body to experiment pool detects with the process that obtains voltage signal; The process of detecting can receive extraneous influence of various factors, thereby need remove the processing of making an uproar to detected voltage signal, for example; Can handle voltage signal through one-dimensional wavelet transform, effectively voltage signal is removed the processing of making an uproar.
The measuring method of present embodiment total organic carbon in waterbody; Through ozone being injected in the water body so that ozone and organic carbon reaction are luminous; Light intensity through sending in the test experience pond easily; And be voltage signal, thereby can obtain the corresponding voltage signal of organic carbon in the water body easily with phototransformation.In addition; Through the voltage signal that obtains is removed the processing of making an uproar; Can effectively weaken extraneous factor to the influence that detected voltage signal causes, make voltage signal more accurate, more help improving the reliability of the measuring method of present embodiment total organic carbon in waterbody.
Based on technique scheme, optional, as shown in Figure 3, the step 1 in the present embodiment comprises following concrete steps:
Step 11, judge that voltage signal is whether stable.Concrete, judge through step 11 pair detected voltage signal, confirm whether voltage signal is in steady state (SS).For example: the relative standard deviation that can calculate continuous a plurality of voltage signals; If relative standard deviation, confirms then that voltage signal is in steady state (SS) less than preset standard deviation.In a period of time scope; Can detect different corresponding constantly voltage signals; Calculate the relative standard deviation of continuous a plurality of voltage signals then; Relative standard deviation relative standard deviation that calculates and preset standard deviation compared, if can confirm then that less than preset standard deviation detected voltage signal is in steady state (SS).
Step 12, if voltage signal be in steady state (SS); In experiment pool, do not continuing under the situation of injection water body; Detect the first corresponding voltage signal of organic carbon in the water body, until the ratio of first voltage signal and the mean value of the voltage signal that is in steady state (SS) less than pre-set threshold value.Concrete, after judging voltage signal and being in steady state (SS), then stop in experiment pool, to continue to inject water body, and begin the first corresponding voltage signal of organic carbon in the detection record water body simultaneously.Because continue in the experiment pool to inject ozone, the content of the organic carbon in the water body reduces gradually, the light intensity that the water body of experiment pool sends also dies down gradually, thereby causes the magnitude of voltage of detected first voltage signal to reduce gradually.When the ratio of first voltage signal and the mean value of the voltage signal that is in steady state (SS) during less than pre-set threshold value, detected all magnitudes of voltage are first voltage signal.
Step 13, after the ratio of the magnitude of voltage of first voltage signal and the mean value of the voltage signal that is in steady state (SS) is less than pre-set threshold value; In experiment pool, continuing to inject under the situation of water body; Detect the second corresponding voltage signal of organic carbon in the water body; Mxm. appears until detecting second voltage signal, wherein, and the size of the magnitude of voltage of the previous moment that obtains when mxm. is detected second voltage signal magnitude of voltage that occurs previous moment for the first time greater than constantly magnitude of voltage of back one.Concrete, after the ratio of the magnitude of voltage of first voltage signal and the mean value of the voltage signal that is in steady state (SS) is less than pre-set threshold value, will continues to inject water body again in the experiment pool, and begin the second corresponding voltage signal of organic carbon in the detection record water body simultaneously.Owing to injected new water body in the experiment pool, the content of the organic carbon in the experiment pool is increased, the light intensity that the water body of experiment pool sends is grow gradually also, thereby causes the magnitude of voltage of detected second voltage signal to increase gradually.In detecting the process of second voltage signal, when the magnitude of voltage that detected previous moment occurs for the first time during greater than constantly magnitude of voltage of back one, as mxm., detected all magnitudes of voltage are second voltage signal with the magnitude of voltage of this previous moment.
And the step 2 in the present embodiment is specially: first voltage signal and second voltage signal are carried out integral processing.Concrete, the area value that obtains in the step 2 comprises two parts, area value that promptly first voltage signal is corresponding and the corresponding area value sum of second voltage signal.
The measuring method of present embodiment total organic carbon in waterbody; Through after obtaining voltage signal in judgement and being in steady state (SS); Detect the corresponding voltage signal of the organic carbon in the water body in the different time sections again; Can obtain the corresponding area value of voltage signal more accurately and effectively, thereby can obtain the concentration of total organic carbon in waterbody more accurately, more help improving the reliability of the measuring method of present embodiment total organic carbon in waterbody.
Based on technique scheme, optional, present embodiment step 1 is specially: the SF according to preset detects the water body in the experiment pool, and wherein, SF is the relative standard deviation frequency values hour of continuous a plurality of voltage signals.
Particularly, in the process that the water body in the experiment pool is detected, can detect according to preset SF, wherein, this employing frequency is a pairing frequency values when the numerical value of the relative standard deviation of detected voltage signal is minimum value.Through adopting preset SF that the corresponding voltage signal of the organism in the experiment pool is detected, can obtain the corresponding voltage signal of organic carbon more accurately; And, can more accurately be easy to calculate the corresponding area value of voltage signal owing to adopt preset SF to detect.
Further, the measuring method of present embodiment total organic carbon in waterbody both can the continuous detection experiment pool in the concentration of total organic carbon, can also adopt the concentration of total organic carbon in the discontinuous mode test experience pond.When adopting discontinuous mode; Step 1 will detect the water body in the experiment pool according to preset SF; Concrete, above-mentioned steps 12 can adopt following method to obtain with step 13: according to preset SF the water body in the experiment pool is carried out the interval and detect, to obtain a plurality of voltage signals; Wherein, the number of voltage signal is the preset number of times that detects.Concrete, can configure in advance and detect the number of times that will detect at interval, detect voltage signal corresponding in the different time sections at interval according to preset SF then.Step 2 in the present embodiment is specially: each voltage signal is carried out integral processing, to obtain the corresponding area value of each voltage signal.Concrete, the voltage signal in each time period is carried out integral processing, thereby can obtain the area value of each voltage signal correspondence in the time period that belongs to separately.
Further again, the step 3 in the present embodiment can be specially:
Maximum area value and minimum area value in step 31, the removal area value;
Further, preset concentration formula in the present embodiment can adopt the formula that configures in advance, also can in the process of primary detection voltage signal, carry out the scene and set.Particularly, in order to set preset concentration formula in advance, the measuring method of present embodiment total organic carbon in waterbody also comprised before step 33:
Step 33 ', set preset concentration formula, be specially:, obtain preset concentration value and the linear relationship between the average area value, with the concentration formula that obtains presetting according to average area value and preset concentration value.Concrete, can be complementary with preset concentration value through calculating the average area value that obtains, make the average area value corresponding one by one with the concentration value of presetting, thus concentration value that can obtain easily to preset and the linear relationship between the average area value.For example: can detect the average area value twice, twice average area value will be distinguished the concentration value of corresponding different preset, then, according to two groups of average area values and preset concentration value, calculate preset concentration formula.
The measuring method of present embodiment total organic carbon in waterbody detects the water body in the experiment pool through adopting preset SF, can obtain the corresponding voltage signal of organic carbon more accurately; And, can more accurately be easy to calculate the corresponding area value of voltage signal owing to adopt preset SF to detect.Through setting preset concentration formula, can set the concentration formula easily according to actual needs, thereby make the concentration value of the total organic carbon that calculates more accurate, more help improving the reliability of the measuring method of present embodiment total organic carbon in waterbody.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of programmed instruction; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 5 is the measurement mechanism example structure synoptic diagram of total organic carbon in waterbody of the present invention.As shown in Figure 5, the measurement mechanism of present embodiment total organic carbon in waterbody comprises: detection module 10, integral processing module 20 and computing module 30.
Particularly, the detection module 10 in the present embodiment, integral processing module 20 and the computing module 30 concrete courses of work can repeat no more at this referring to the record of the measuring method embodiment of total organic carbon in waterbody of the present invention.
The measurement mechanism of present embodiment total organic carbon in waterbody is through to detecting in the water body in the experiment pool, to obtain the corresponding voltage signal of organic carbon in the different water bodys constantly; Then, voltage signal is carried out integration to obtain the corresponding area value of voltage signal; At last, bring area value into concentration that the concentration formula just can obtain total organic carbon in waterbody accurately and reliably.Because detected voltage signal need not to be assumed to stably or the time is constant, thereby can detect the concentration of total organic carbon in waterbody in real time accurately, improve the reliability of the measuring method of present embodiment total organic carbon in waterbody.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (3)
1. the measuring method of a total organic carbon in waterbody is characterized in that, comprising:
In experiment pool, inject ozone, so that the reaction of the organic carbon in said ozone and the said water body is luminous;
Water body in the experiment pool detects, to obtain the corresponding voltage signal of organic carbon in the said water body;
Said voltage signal is carried out integral processing, to obtain the corresponding area value of said voltage signal;
According to said area value and preset concentration formula, calculate the concentration of the total organic carbon in the said water body, wherein, said preset concentration formula is the linear relationship formula between said concentration and the said area value;
Said water body in the experiment pool is detected, be specially: the light that the water body in the said experiment pool is sent detects, and converts said light into said voltage signal; Judge whether said voltage signal is stable; If said voltage signal is in steady state (SS); In said experiment pool, do not continuing under the situation of injection water body; Detect the first corresponding voltage signal of organic carbon in the said water body; Continue to inject ozone therebetween in the said experiment pool, the magnitude of voltage of said first voltage signal will reduce gradually, until the ratio of said first voltage signal and the mean value of the voltage signal that is in steady state (SS) less than pre-set threshold value; After the ratio of the magnitude of voltage of said first voltage signal and the mean value of the voltage signal that is in steady state (SS) is less than pre-set threshold value; In said experiment pool, continuing to inject under the situation of water body; Detect the second corresponding voltage signal of organic carbon in the said water body; Mxm. appears until detecting said second voltage signal; The size of the magnitude of voltage of the previous moment that obtains when wherein, said mxm. is detected said second voltage signal magnitude of voltage that occurs previous moment for the first time greater than constantly magnitude of voltage of back one; Said said voltage signal is carried out integral processing; Be specially: said first voltage signal and said second voltage signal are carried out integral processing; And the area value that obtains comprises two parts, area value that promptly first voltage signal is corresponding and the corresponding area value sum of second voltage signal.
2. the measuring method of total organic carbon in waterbody according to claim 1; It is characterized in that; Said said voltage signal is carried out integral processing, before the area value that obtains said voltage signal correspondence, also comprise: said voltage signal is removed the processing of making an uproar.
3. the measuring method of total organic carbon in waterbody according to claim 1 is characterized in that, saidly judges that said voltage signal is whether stable and is specially:
Calculate the relative standard deviation of continuous a plurality of said voltage signals;
If said relative standard deviation, confirms then that said voltage signal is in steady state (SS) less than preset standard deviation.
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| CN102288643B (en) * | 2011-08-01 | 2013-01-09 | 山东省科学院海洋仪器仪表研究所 | Method and device for measuring organic matter of soil |
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