CN206161540U - A micro -fluidic chip integrated system for detecting total phosphorus of total nitrogen - Google Patents
A micro -fluidic chip integrated system for detecting total phosphorus of total nitrogen Download PDFInfo
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- CN206161540U CN206161540U CN201621225699.2U CN201621225699U CN206161540U CN 206161540 U CN206161540 U CN 206161540U CN 201621225699 U CN201621225699 U CN 201621225699U CN 206161540 U CN206161540 U CN 206161540U
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Abstract
The utility model discloses a micro -fluidic chip integrated system for detecting total phosphorus of total nitrogen, include into kind unit A, advance kind unit B and mix and clear up detecting element. Integrateed two kinds and advanced the sample prescription formula and detect the integration and detect with mixing to clear up, whole instrument small, the maintenance volume is low, and pollution small, that the carry adapter low, the pipeline of runner is few, and the liquid way system that integrates reduces to assemble on line work load.
Description
Technical field
The utility model is related to enviromental monitoring equipment field, more particularly to a kind of micro-fluidic core for detecting total nitrogen total phosphorus
Piece integrated system.
Background technology
Monitoring water environment object type is various, and total nitrogen total phosphorus are two important conventional indexs of water quality monitoring, what total nitrogen referred to
It is the summation of organic nitrogen in water, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, essentially from the loss of chemical fertilizer in agricultural production.Total phosphorus
It is the summation of the phosphorus of various forms in water, its main source is used by sanitary sewage, chemical fertilizer, organophosphorus pesticide and modern age detergent
Phosphate buider etc..Total nitrogen total phosphorus are exceeded to cause the body eutrophications such as lake, river, algal blooms, water quality
Degenerate, wawter bloom or red tide occur, it is impossible to drink.
The equipment of the total nitrogen total phosphorus of on-line measurement at present needs to clear up filtered water sample, when clearing up, the solution of test
By the nitrogen in water sample in the environment of HTHP, including dissolving, particle, organically and Phos is all oxidized to positive phosphorus
Nitrogen-containing compound in hydrochlorate, water sample is fully converted to nitrate, surveys under certain wavelength after then mixing with other reagents again
Determine absorbance, be calculated the content of total nitrogen total phosphorus.
But the instrument reagent consumption of conventional online total nitrogen total phosphorus is big, the reagent that chemical method measurement total nitrogen total phosphorus are consumed with
And after having reacted there is serious pollution to environment in the waste liquid of discharge.
Utility model content
In view of the drawbacks described above of prior art, the utility model provides a kind of for detecting the micro-fluidic of total nitrogen total phosphorus
Integrated chip system, including sample injection unit A, sample injection unit B and mixing clear up detector unit, sample injection unit A and it is described enter
Sample unit B is cleared up detector unit and be connected with the mixing respectively, and detector unit is cleared up in the mixing is used for clearing up and examining for water sample
Survey；Sample injection unit A includes chip substrate A, townhouse valve, be provided with runner pipeline in the chip substrate A, and runner pipeline enters
Mouth end is connected with the townhouse valve, and the port of export of runner pipeline is cleared up detector unit and is connected with the mixing；Sample injection unit B
Including chip substrate B, air pump, multi-channel peristaltic pump, reagent bottle and two-bit triplet magnetic valve, it is provided with the chip substrate B
The reagent quantitative passage of multiple different sizes, reagent bottle one reagent quantitative passage of correspondence, each reagent quantitative passage
Arrival end and the port of export are respectively connected with 1 two-bit triplet magnetic valve, and the arrival end of reagent quantitative passage passes through two-bit triplet electromagnetism
It is divided into two-way after valve and with air pump and is connected with the corresponding reagent bottle connection of multi-channel peristaltic pump respectively, reagent quantitative passage goes out
Mouth end is divided into two-way after two-bit triplet magnetic valve and clears up detector unit and the connection of corresponding reagent bottle with mixing respectively.
Preferably, the chip substrate A is PDMS chips.
Preferably, chip pumps are additionally provided with the chip substrate A, the chip pumps are used to control in the chip substrate A
Fluid flow in runner pipeline.
Preferably, the chip substrate B is lucite chip.
Preferably, the mixing clears up detector unit including TEC, and the TEC is used to clear up detector unit to the mixing
Heated and lowered the temperature.
Preferably, detector unit is cleared up in the mixing also includes array uviol lamp.
Preferably, the air pump is additionally provided with air cleaner, the air pump by the air cleaner with it is described
Reagent quantitative passage connects.
The utility model has the advantages that：
(1) reagent consumption of traditional instrument is big, with serious pollution problem.Using micro-fluidic chip integrated system runner body
Product reduces, and reduces the usage amount of reagent, and the reagent consumption of traditional two weeks can supply micro-fluidic chip integrated system 1
More than month, cut down waste liquor contamination, reduce use cost.
(2) accurate quantification of varying number level reagent volume is realized using chip pumps and air pump, without the need for calibration, it is to avoid
Peristaltic pump long-play is quantitative inaccurate to bring error.All streams are individually designed to be integrated on one block of lucite, real
Show device miniaturization and avoid cross pollution between reagent, what the stream inside micro-fluidic perspex panels was adopted
Smooth working process, without dead angle, it is to avoid flowing cleaning is not thorough.
(3) two kinds of input modes and mixing are cleared up detection integration and detect that maintenance is low, the small volume of runner, the dirt for carrying
Few, the integrated liquid-way system of low, pipeline the adapter of dye, reduces online assembly working amount；Two kinds of quantitative sample injection modes are directed to
The reagent of different physicochemical properties and actually used volume independence sample introduction, it is to avoid the cross pollution of reagent, chip pumps and air
Pump is quantitatively all integrated on miniflow substrate, and switching pipeline is few, is reduced pipeline residual and is lost, and is greatly reduced conventional instrument
The volume of device.
(4) two kinds of input modes and clear up detection and be modularized design, it is easy to assembly, can be according to Testing index not
Arrange in pairs or groups with independent assortment, clearing up detection can also realize the online inspection of other indexs such as ammonia nitrogen by changing light source and optical filter
Survey.Detector unit is cleared up in mixing can realize clearing up and detecting for water sample, be integrated with TEC heating and deep ultraviolet Hybrid Heating disappears
Solution, detection realizes the detection of total nitrogen total phosphorus using xenon source and two tablet filters.To accelerate detection speed, using TEC pair
Whole module is lowered the temperature, the 25 DEG C of detections of final sample temperature constant, it is to avoid temperature is too high and too low detects unstable showing
As.TEC is to be built in detection module bottom, and deep ultraviolet lamp is to be fitted in two corresponding sides of detection module, detects light source
It is that, in two other side of detection module, the volume of whole detection architecture only has 2ml, reduces the body of instrument with optical filter
Product.
Description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the present utility model.
Specific embodiment
The technique effect of design of the present utility model, concrete structure and generation is made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
As shown in figure 1, the utility model provides a kind of micro-fluidic chip integrated system for detecting total nitrogen total phosphorus, bag
Include sample injection unit A, sample injection unit B and mixing and clear up detector unit, sample injection unit A and sample injection unit B clear up inspection with mixing respectively
Unit connection is surveyed, detector unit is cleared up in mixing clearing up and detect for water sample；Sample injection unit A includes chip substrate A 1, townhouse
Valve 4, chip substrate A 1 is PDMS chips, and runner pipeline 3, the arrival end and townhouse of runner pipeline 3 are provided with chip substrate A 1
Valve 4 connects, and the port of export and the mixing of runner pipeline 3 are cleared up detector unit and be connected；The connection water sample passage of townhouse valve 4, pure water lead to
Road, cleaning fluid passage and/or alternate channel, aforesaid liquid is controlled into runner pipeline 3 by controlling townhouse valve 4.In the chip
Chip pumps 1 are additionally provided with substrate A 1, chip pumps 1 are used for the fluid flow in control chip substrate A 1 in runner pipeline 3, chip
Pump 1 is integrated in the peristaltic pump on chip substrate A 1, and pump line is a part for chip, major function be to water sample and pure water,
The non-aggressive solution such as cleaning fluid is accurately measured, it is adaptable to the large volume liquid meter of milliliter level, water sample, pure water,
Cleaning fluid is entered by chip pumps 1 clears up detector unit.
Sample injection unit B includes chip substrate B 14, air pump 9, multi-channel peristaltic pump 6, reagent bottle and two-bit triplet electromagnetism
Valve 5, chip substrate B 14 is lucite chip, and multiple reagent quantitative passages 10 are provided with chip substrate B 14, due to detection
Process needs the different volume of different reagents, therefore the specification of reagent quantitative passage 10 is different, and the specification of reagent quantitative passage 10 is (i.e.
Volume) fixed, the principle so as to realize the quantitative of reagent, as quantitative loop.One reagent bottle one reagent quantitative of correspondence
Passage 10, the arrival end and the port of export of each reagent quantitative passage 10 are respectively connected with 1 two-bit triplet magnetic valve 5, reagent quantitative
The arrival end of passage 10 by be divided into after two-bit triplet magnetic valve 5 two-way respectively with air pump 9 and be connected with multi-channel peristaltic pump 6
The connection of corresponding reagent bottle, the port of export of reagent quantitative passage 10 by be divided into after two-bit triplet magnetic valve 5 two-way respectively with it is mixed
Detector unit and correspondence reagent bottle connection are cleared up in conjunction.Air pump 9 disappears for the liquid in reagent quantitative passage 10 to be pumped into mixing
Solution detector unit, multi-channel peristaltic pump 6 is used to for the reagent in reagent bottle to pump into reagent quantitative passage 10.By adjusting two three
Three-way electromagnetic valve 5 realizes the switching of connecting line, and during initial sample, connected mode is：Reagent bottle-two-bit triplet magnetic valve 5- reagents
Dosing channel 10- two-bit triplet magnetic valve 5- reagent bottles, therefore the reagent of excess can flow back to reagent bottle, and when needing sample introduction, even
The mode of connecing is：Detection is cleared up in air pump 9- two-bit triplet magnetic valve 5- reagent quantitative passage 10- two-bit triplet magnetic valves 5- mixing
Unit, quantitative reagent is pumped to mixing and clears up detector unit by air pump 9 in reagent quantitative passage 10.It should be noted that
The setting of two-bit triplet magnetic valve 5 can be arranged as shown in Figure 1 in the chips, it is also possible to be arranged on outside chip edge, i.e. chip
Reagent bottle be directly connected with two-bit triplet magnetic valve 5 by translation interface, and without the need for as shown in figure 1, reagent bottle connection conversion
Interface, then be connected with two-bit triplet magnetic valve 5 through arranging runner in the chips.Air pump 9 is additionally provided with air cleaner 8,
Air is connected by air pipe line 7 after the filtration of air cleaner 8 with reagent quantitative passage 10 in air pump 9.
In the present embodiment, 5 reagent quantitative passages 10 are provided with, i.e., 5 reagent bottles load respectively potassium peroxydisulfate, hydrogen-oxygen
Change sodium, ascorbic acid, molybdate, hydrochloric acid this 5 reagents, multi-channel peristaltic pump 6 extract excessive potassium peroxydisulfate, NaOH,
Ascorbic acid, molybdate, hydrochloric acid enter reagent quantitative passage 10, and excessive reagent runner reagent bottle again, reagent is full of reagent
After dosing channel 10, the switching position of two-bit triplet magnetic valve 5, air pump 9 is run, and has been passed through through the air of air cleaner 8
Machine glass-chip runner, pumps into respectively mixing and clears up unit the reagent of reagent quantitative passage 10.
Mixing clears up detector unit including quartz colorimetric utensil 13, xenon source, collimation lens, 880nm optical filters, 220nm
Built-in (the semiconductor refrigeratings of TEC 11 that can heat and lower the temperature in detector unit bottom are cleared up in optical filter, photoelectric sensor, mixing
Device), to clear up and also fitted on the side wall of unit miniature array uviol lamp 12, the uviol lamp is that deep ultraviolet 275nm miniature arrays are purple
Outer lamp, volume less (8*14*3mm).Xenon source and 220nm optical filters on two other side of detector unit is realized total
The detection of nitrogen total phosphorus.
The occupation mode of the system is exemplified below：(1) detection of total phosphorus：Water sample (sample injection unit A) and potassium peroxydisulfate reagent
(sample injection unit B) is gradually added to mixing and clears up detector unit, opens heating TEC 11 (95 DEG C) and deep ultraviolet lamp is realized efficiently
Efficiency is cleared up, heating is stopped after ten minutes and is closed uviol lamp, TEC 11 is reversely powered and realizes cooling, air pump 9 dozens after five minutes
Enter quantitative ascorbic acid and molybdic acid reactant salt direct detection after five minutes, detection mode by detector unit two other
Xenon source and 880nm optical filters on side realizes the detection of total phosphorus.Lead to pure water clean-drain after the completion of detection.
(2) detection of total nitrogen：Quantitative water sample and potassium peroxydisulfate, sodium hydroxide reagent is gradually added to mixing and clears up detection
Unit, opens heating TEC 11 and deep ultraviolet lamp is cleared up, and heating is stopped after ten minutes and closes uviol lamp, and TEC 11 is reversely powered real
Now lower the temperature, air pump 9 squeezes into quantitative hydrochloric acid after five minutes, direct detection after reacting five minutes.Detection mode is single by detecting
Xenon source and 220nm optical filters on two other side of unit realizes the detection of total nitrogen.Lead to pure water after the completion of detection clear
Wash emptying.
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations without the need for creative work according to design of the present utility model.Therefore, all this technology necks
Technical staff passes through on the basis of existing technology logic analysis, reasoning or limited reality according to design of the present utility model in domain
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (7)
1. a kind of micro-fluidic chip integrated system for detecting total nitrogen total phosphorus, it is characterised in that including sample injection unit A, sample introduction
Detector unit is cleared up in unit B and mixing, and sample injection unit A and sample injection unit B mix that to clear up detection single with described respectively
Unit's connection, detector unit is cleared up in the mixing clearing up and detect for water sample；Sample injection unit A includes chip substrate A
(2), townhouse valve (4), are provided with runner pipeline (3), arrival end and the townhouse of runner pipeline (3) in the chip substrate A (2)
Valve (4) connects, and the port of export of runner pipeline (3) is cleared up detector unit and is connected with the mixing；Sample injection unit B includes chip
Substrate B (14), air pump (9), multi-channel peristaltic pump (6), reagent bottle and two-bit triplet magnetic valve (5), the chip substrate B
(14) the reagent quantitative passage (10) of multiple different sizes is provided with, a reagent bottle corresponds to a reagent quantitative passage (10),
The arrival end and the port of export of each reagent quantitative passage (10) is respectively connected with 1 two-bit triplet magnetic valve (5), reagent quantitative passage
(10) arrival end by be divided into after two-bit triplet magnetic valve (5) two-way respectively with air pump (9) and be connected with multichannel wriggling
The corresponding reagent bottle connection of pump (6), the port of export of reagent quantitative passage (10) after two-bit triplet magnetic valve (5) by being divided into two-way
Clear up detector unit and the connection of corresponding reagent bottle with mixing respectively.
2. it is used to as claimed in claim 1 detect the micro-fluidic chip integrated system of total nitrogen total phosphorus, it is characterised in that the core
Plate base A (2) is PDMS chips.
3. it is used to as claimed in claim 2 detect the micro-fluidic chip integrated system of total nitrogen total phosphorus, it is characterised in that the core
Be additionally provided with chip pumps (1) in plate base A (2), the chip pumps (1) for controlling the chip substrate A (2) in runner pipeline
(3) fluid flow in.
4. it is used to as claimed in claim 1 detect the micro-fluidic chip integrated system of total nitrogen total phosphorus, it is characterised in that the core
Plate base B (14) is lucite chip.
5. it is used to as claimed in claim 1 detect the micro-fluidic chip integrated system of total nitrogen total phosphorus, it is characterised in that described mixed
Conjunction clears up detector unit including TEC (11), and the TEC (11) is for clearing up detector unit to the mixing and heated and dropped
Temperature.
6. it is used to as claimed in claim 5 detect the micro-fluidic chip integrated system of total nitrogen total phosphorus, it is characterised in that described mixed
Detector unit is cleared up in conjunction also includes array uviol lamp (12).
7. it is used to as claimed in claim 1 detect the micro-fluidic chip integrated system of total nitrogen total phosphorus, it is characterised in that the sky
Air pump (9) is additionally provided with air cleaner (8), and the air pump (9) is logical with the reagent quantitative by the air cleaner (8)
Road (10) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225699.2U CN206161540U (en) | 2016-11-15 | 2016-11-15 | A micro -fluidic chip integrated system for detecting total phosphorus of total nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225699.2U CN206161540U (en) | 2016-11-15 | 2016-11-15 | A micro -fluidic chip integrated system for detecting total phosphorus of total nitrogen |
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| CN206161540U true CN206161540U (en) | 2017-05-10 |
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| CN201621225699.2U Active CN206161540U (en) | 2016-11-15 | 2016-11-15 | A micro -fluidic chip integrated system for detecting total phosphorus of total nitrogen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064216A (en) * | 2017-04-19 | 2017-08-18 | 哈尔滨工业大学 | A kind of portable COD detection means based on microfluidic chip technology |
| CN108072648A (en) * | 2016-11-15 | 2018-05-25 | 杭州绿洁水务科技股份有限公司 | A kind of micro-fluidic chip integrated system for being used to detect total nitrogen total phosphorus |
| CN108226075A (en) * | 2017-12-29 | 2018-06-29 | 江苏汇环环保科技有限公司 | A kind of total nitrogen analysis measuring apparatus |
-
2016
- 2016-11-15 CN CN201621225699.2U patent/CN206161540U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072648A (en) * | 2016-11-15 | 2018-05-25 | 杭州绿洁水务科技股份有限公司 | A kind of micro-fluidic chip integrated system for being used to detect total nitrogen total phosphorus |
| CN108072648B (en) * | 2016-11-15 | 2024-04-09 | 杭州绿洁科技股份有限公司 | Microfluidic chip integrated system for detecting total nitrogen and total phosphorus |
| CN107064216A (en) * | 2017-04-19 | 2017-08-18 | 哈尔滨工业大学 | A kind of portable COD detection means based on microfluidic chip technology |
| CN108226075A (en) * | 2017-12-29 | 2018-06-29 | 江苏汇环环保科技有限公司 | A kind of total nitrogen analysis measuring apparatus |
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Address after: 311100 Room 101, Building 1, Luting Road, Cangqian Street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Lujie Environmental Science and Technology Co., Ltd. Address before: 311121 Room 101, Building 1, Luting Road, Cangqian Street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU GREAN WATER SCIENCE & TECHNOLOGY INC. |