CN100561211C - A kind of ammonia test method and device - Google Patents
A kind of ammonia test method and device Download PDFInfo
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- CN100561211C CN100561211C CNB2007101188291A CN200710118829A CN100561211C CN 100561211 C CN100561211 C CN 100561211C CN B2007101188291 A CNB2007101188291 A CN B2007101188291A CN 200710118829 A CN200710118829 A CN 200710118829A CN 100561211 C CN100561211 C CN 100561211C
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Abstract
The present invention relates to a kind of ammonia test method and device, it is to utilize in the aqueous solution of pH 〉=12.3, the ammonium root can all change into the principle of ammonia, ammonium root solution and highly basic reaction are produced ammonia, capture the absorption ammonia by the secondary water that is arranged on the semi-permeable diaphragm opposite side, and absorb the variation of electric conductivity value behind the ammonia by measuring secondary water, realize mensuration to the counter original ammonium root concentration that of spreading out.It comprises a controllable constant-temperature case apparatus of the present invention, is arranged on the detection module in the described constant temperature oven, connects the conductance electrode of described detection module, connects the signal picker of described conductance electrode, and the computing machine that connects described signal picker; Described detection module comprises upper module and the lower module two parts that link together by bolt.The exploitation of the inventive method and device is based on atmospheric environment, can distinguish the ammonia constituent concentration in measurement gas and the gasoloid, but it is equally applicable to water environment, and can realizes on-line measurement.
Description
Technical field
The present invention relates to a kind of detection method and device, particularly about a kind of ammonia test method and device that utilizes the anti-original ammonium root concentration of spreading out of variation of secondary water (deionized water) electric conductivity value.
Background technology
At present, the method of ammonium concentration is to use the chromatography of ions in the measurement aqueous solution commonly used, the chromatography of ions has fast, sensitive, selectivity is good and measure multi-component advantage simultaneously, yet the cation chromatography instrument costs an arm and a leg, volume greatly, the water consumption of leacheate and regenerated liquid is big, the nominal time is long; If will realize on-line measurement, then the coupling with acquisition system is relatively more difficult.
Summary of the invention
At the problems referred to above, it is little to the purpose of this invention is to provide a kind of volume, easy to carry, and transparent visual, scaling method is simple, is fit to be applied to the laboratory ammonia test method and the device of online observation in addition.
For achieving the above object, the present invention takes following technical scheme: a kind of ammonia test method, it is to utilize in the aqueous solution of PH 〉=12.3, the ammonium root can all change into the principle of ammonia, ammonium root solution and highly basic reaction are produced ammonia, capture to absorb ammonia by the secondary water that is arranged on the semi-permeable diaphragm opposite side, and absorb the variation of electric conductivity value behind the ammonia, realize mensuration the counter original ammonium root concentration that of spreading out by measuring secondary water.
A kind of ammonia pick-up unit of realizing said method, it is characterized in that: it comprises a controllable constant-temperature case, is arranged on the detection module in the described constant temperature oven, connects the conductance electrode of described detection module, connect the signal picker of described conductance electrode, and the computing machine that connects described signal picker; Described detection module comprises upper module and the lower module two parts that link together by bolt: be provided with a current stabilization post and a deionizing column in the described upper module, the bottom surface of described upper module is provided with an absorption cell, the endpiece of described current stabilization post connects the entrance point of described deionizing column, the endpiece of described deionizing column connects the entrance point of described absorption cell by a skewed slot, the endpiece of described absorption cell connects a conductance cell, an interface of described conductance cell connects a liquid discharge pipe, and other two interfaces connect the positive and negative electrode of described conductance electrode respectively; Be provided with two current stabilization posts in the described lower module, the end face of described lower module is vertically arranged with reactive tank, and an end of described two current stabilization posts is communicated with the import of described reactive tank respectively by a skewed slot; The outlet of described reactive tank connects a waste liquid vent pipe; One semi-permeable diaphragm, it is arranged between described upper module and the lower module.
Be provided with electric heater, electric fan, temperature sensor and adjustment control device in the described constant temperature oven, described electric fan is arranged on the air inlet place of described constant temperature oven, described electric heater is a resistance wire, described temperature sensor is arranged near the described conductance cell, and described electric heater, electric fan, temperature sensor connect described adjustment control device respectively.
One on two current stabilization posts of described lower module pass through the liquid pump and connect sodium hydroxide solution, another connects the ammonium sample solution by another liquid pump, the current stabilization post of described upper module passes through a liquid pump again and connects secondary water, is filled with the deionization resin in the deionizing column of described upper module.
Described liquid pump is a peristaltic pump.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the inventive method utilization is in the aqueous solution of PH 〉=12.3, the ammonium root can all change into the principle of ammonia, absorb ammonia with secondary water, utilize the variation of secondary water electric conductivity value, realization is to the mensuration of the counter original ammonium root concentration that of spreading out, and not only acquisition method is simple, and the measurement accuracy height.2, detection system of the present invention is made up of two modules, by the processing to two modules, forms current stabilization post, deionizing column, reactive tank, absorption cell and each pipe path, makes detection system very simple, with low cost.3, the current stabilization post that is provided with in the system of the present invention can be in operation, and stabilizing solution flows, the interference of removal bubble, keeps the steady of baseline; Deionizing column can be in operation and further stablize background baseline electricity and lead the raising detection sensitivity.4, the present invention replaces the mode of traditional temperature compensation owing to adopt the controllable constant-temperature case, therefore temperature accuracy can be controlled at ± 0.1 ℃, makes measurement data more reliable and more stable.5, apparatus of the present invention mainly adopt common plexiglass block and conventional sense parts, so material source is abundant, and overall expenses is cheap.The exploitation of the inventive method and device is based on atmospheric environment, can distinguish the ammonia constituent concentration in measurement gas and the gasoloid, but it is equally applicable to water environment, and can realizes on-line measurement.
Description of drawings
Fig. 1 is apparatus of the present invention one-piece construction synoptic diagram
Fig. 2 is a detection module perspective view of the present invention
Fig. 3 is a lower module structural representation of the present invention
Fig. 4 is that synoptic diagram is looked on the left side of Fig. 3
Fig. 5 is the schematic top plan view of Fig. 3
Fig. 6 is a upper module structural representation of the present invention
Fig. 7 is that synoptic diagram is looked on the left side of Fig. 7
Fig. 8 is the schematic top plan view of Fig. 7
Fig. 9 principle of work synoptic diagram of the present invention
Embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
The inventive method is utilized in the aqueous solution of PH 〉=12.3, utilization is in the aqueous solution of PH 〉=12.3, the ammonium root can all change into the principle of ammonia, ammonium root solution and highly basic reaction are produced ammonia, capture the absorption ammonia by the secondary water that is arranged on the semi-permeable diaphragm opposite side, and absorb the variation of electric conductivity value behind the ammonia by measuring secondary water, realize mensuration to the counter original ammonium root concentration that of spreading out.
As shown in Figure 1 and Figure 2, apparatus of the present invention comprise a controllable constant-temperature case 1, one detection module 2 is set in constant temperature oven 1, detection module 2 comprises upper module 3 and the lower module 4 that links into an integrated entity with bolt, be provided with between the upper and lower part module 3,4 one allow gas by and the semi-permeable diaphragm 5 that do not allow liquid to pass through; The conductance electrode 6, one of one connection detection module 2 connects the computing machine 8 of signal picker 7, the one connection signal pickers 7 of conductance electrode 6.Apparatus of the present invention also comprise three liquid pumps 9,10,11 and are equiped with three containers of secondary water 12, ammonium sample solution 13 and sodium hydroxide solution 14, and electric fan 15, electric heater 16, temperature sensor 17 and adjustment control device 18.
Shown in Fig. 2～5, the inside on module top 3 is provided with the post hole of two longitudinal extensions, and one as current stabilization post 31, and another is as deionizing column 32.Be vertically arranged with an absorption cell 33 in the bottom surface of upper module 3, (the V-type groove is for easy to process by a V-type groove 34 at current stabilization post 31 endpiece, but be not limited thereto) connect the entrance point of deionizing column 32, the endpiece of deionizing column 32 connects the entrance point of absorption cell 33 by a skewed slot 35, the endpiece of absorption cell 33 connects a conductance cell 36, interface 361 in the middle of three interfaces of conductance cell 36 connects liquid discharge pipe 19 (as shown in Figure 1), and two interfaces 362,363 of both sides connect the positive and negative electrode of conductance electrode 6 respectively.In deionizing column 32, load the deionization resin, be used for stablizing the background conductance in the deionized water, make the background baseline more steady, thereby improve detection sensitivity.As shown in Figure 3, the edge of upper module 3 is provided with a plurality of bolt mounting holes 37 that are used to connect lower module 4.
Shown in Fig. 2, Fig. 6～8, the inside of lower module 4 also is provided with the post hole of two longitudinal extensions, and two post holes are all as current stabilization post 41,42; Be vertically arranged with a reactive tank 43 corresponding at the end face of lower module 4 with adsorption tank 33, the entrance point of reactive tank 43 passes through the entrance point that two downward-sloping skewed slots 44,45 connect two current stabilization posts 41,42, and the endpiece 46 of reactive tank 43 connects a waste liquid vent pipe 20 (as shown in Figure 1).As shown in Figure 6, the edge of lower module 4 is provided with a plurality of and the corresponding bolt mounting holes 47 in upper module 3 bolt mounting holes 37 positions.
As shown in Figure 9, when the present invention works, under the effect of peristaltic pump 11, sodium hydroxide solution 14 enters in the current stabilization post 41 of lower module 4, and under the effect of peristaltic pump 10, ammonium sample solution 13 enters in the current stabilization post 42 of lower module 4, sodium hydroxide solution 14 and ammonium sample solution 13 compile and react at reactive tank 43 through skewed slot 44,45 respectively, ammonium root in the ammonium sample solution 13 all changes into ammonia, and ammonia penetrates semipermeable membrane 5 and enters upper module 3, and liquid can not pass semipermeable membrane 5.Under the effect of peristaltic pump 9, secondary water 12 enters absorption cell 33 successively behind the current stabilization post 31 of upper module 3 and deionizing column 32, deionized secondary water 12 absorbs the ammonia that passes semi-permeable diaphragm 5, the aqueous solution that contains the ammonium radical ion enters conductance cell 36, after the data by conductance electrode 6 its electric conductivity values of test, discharge through sewer pipe 19 again.After signal picker 7 carries out analyzing and processing with the electric conductivity value data input computing machine of testing 8, and can converse ammonium root concentration by electric conductivity value.
As shown in Figure 1, constant temperature oven 1 is to utilize resistance wire as electric heater 16 heating, by the air in the electric fan 15 stirring constant temperature ovens 1 that are arranged on constant temperature oven air inlet place, make spread heat even, and the temperature sensor 17 transmission temperature signals that pass through to install in the constant temperature oven 1 are to external adjustment control device 18, electric heater 16 and electric fan 15 also are electrically connected adjustment control device 18, thereby reach the purpose of constant temperature.Apparatus of the present invention can be worked under 35 ℃-40 ℃ thermostatic effect, and the temperature-control range of adjustment control device 18 is conversion to some extent also, to adapt to different test case.Temperature sensor 17 can be installed near the conductance cell 36, and conductance electrode 6 is connected with the signal picker 7 that is arranged on constant temperature oven 2 outsides, constantly gathers conductance signal and imports computing machine 8 processing.
Claims (5)
1, a kind of ammonia pick-up unit, it is characterized in that: it comprises a controllable constant-temperature case, is arranged on the detection module in the described constant temperature oven, connects the conductance electrode of described detection module, connect the signal picker of described conductance electrode, and the computing machine that connects described signal picker; Described detection module comprises upper module and the lower module two parts that link together by bolt:
Be provided with a current stabilization post and a deionizing column in the described upper module, the bottom surface of described upper module is provided with an absorption cell, the endpiece of described current stabilization post connects the entrance point of described deionizing column, the endpiece of described deionizing column connects the entrance point of described absorption cell by a skewed slot, the endpiece of described absorption cell connects a conductance cell, an interface of described conductance cell connects a liquid discharge pipe, and other two interfaces connect the positive and negative electrode of described conductance electrode respectively;
Be provided with two current stabilization posts in the described lower module, the end face of described lower module is vertically arranged with reactive tank, and an end of described two current stabilization posts is communicated with the import of described reactive tank respectively by a skewed slot; The outlet of described reactive tank connects a waste liquid vent pipe;
One semi-permeable diaphragm, it is arranged between described upper module and the lower module.
2, a kind of ammonia pick-up unit as claimed in claim 1, it is characterized in that: be provided with electric heater, electric fan, temperature sensor and adjustment control device in the described constant temperature oven, described electric fan is arranged on the air inlet place of described constant temperature oven, described electric heater is a resistance wire, described temperature sensor is arranged near the described conductance cell, and described electric heater, electric fan, temperature sensor connect described adjustment control device respectively.
3, a kind of ammonia pick-up unit as claimed in claim 1, it is characterized in that: one on two current stabilization posts of described lower module pass through the liquid pump and connect sodium hydroxide solution, another connects the ammonium sample solution by another liquid pump, the current stabilization post of described upper module passes through a liquid pump again and connects secondary water, is filled with the deionization resin in the deionizing column of described upper module.
4, a kind of ammonia pick-up unit as claimed in claim 2, it is characterized in that: one on two current stabilization posts of described lower module pass through the liquid pump and connect sodium hydroxide solution, another connects the ammonium sample solution by another liquid pump, the current stabilization post of described upper module passes through a liquid pump again and connects secondary water, is filled with the deionization resin in the deionizing column of described upper module.
5, as claim 3 or 4 described a kind of ammonia pick-up units, it is characterized in that: described liquid pump is a peristaltic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101188291A CN100561211C (en) | 2007-06-12 | 2007-06-12 | A kind of ammonia test method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101188291A CN100561211C (en) | 2007-06-12 | 2007-06-12 | A kind of ammonia test method and device |
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| CN101059465A CN101059465A (en) | 2007-10-24 |
| CN100561211C true CN100561211C (en) | 2009-11-18 |
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Families Citing this family (17)
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| JP4924707B2 (en) * | 2009-12-25 | 2012-04-25 | 株式会社日立プラントテクノロジー | Detected object collector and method of using the same |
| CN102445467B (en) * | 2010-09-30 | 2014-09-10 | 香港理工大学 | System and method for detecting content of sericin in silk degumming liquid |
| CN102297790B (en) * | 2011-05-16 | 2013-03-20 | 北京大学 | Device for collecting/sampling ammonia from atmosphere by utilizing chemical amplification and use method thereof |
| CN102507911B (en) * | 2011-12-14 | 2014-11-19 | 南京信息工程大学 | Method and device for detecting content of liquid ammonia in rubber latex |
| CN103630505B (en) * | 2013-04-28 | 2016-03-23 | 中国科学院电子学研究所 | The apparatus and method of water sample ammonia nitrogen optical detection |
| CN103969377B (en) * | 2014-05-08 | 2016-08-24 | 浙江大学 | The method of the ammonium ion of trace in chromatography of ions on-line checking complex sample |
| CN105204294B (en) * | 2014-05-30 | 2017-07-28 | 中芯国际集成电路制造(上海)有限公司 | Figure CD method in ammonia concentration method for detecting and control photoetching process |
| CN104849422A (en) * | 2015-03-11 | 2015-08-19 | 中国农业大学 | Ammonia nitrogen on-line monitoring system and method thereof |
| CN105651826B (en) * | 2016-03-02 | 2017-07-07 | 李建中 | A kind of ammonium concentration detecting system, method and application |
| DE102016206422A1 (en) * | 2016-04-15 | 2017-10-19 | Zf Friedrichshafen Ag | Bremsenprüfstand module |
| JP7086068B2 (en) * | 2016-11-11 | 2022-06-17 | エムケイエス インストゥルメンツ， インコーポレイテッド | Systems and methods for producing conductive liquids containing deionized water in which ammonia gas is dissolved. |
| US10241022B2 (en) * | 2017-03-30 | 2019-03-26 | Intel Corporation | Characterizing a fluid sample based on response of a non-planar structure |
| US11313821B2 (en) * | 2017-06-29 | 2022-04-26 | Griffith University | Sensor |
| CN107421997A (en) * | 2017-07-31 | 2017-12-01 | 贵州开磷质量检测中心有限责任公司 | A kind of method of constant temperature system for conductivity measurement and measurement electrical conductivity |
| CN109900769A (en) * | 2017-12-08 | 2019-06-18 | 中国科学院大连化学物理研究所 | The method and device of ammonia nitrogen in a kind of ion mobility spectrometry quantitative measurment water |
| CN112557461B (en) * | 2020-12-09 | 2024-04-19 | 中国科学院东北地理与农业生态研究所 | Acquisition and detection device for ammonia in atmosphere |
| CN113125516B (en) * | 2021-04-01 | 2023-04-14 | 青岛盛瀚色谱技术有限公司 | Wide-range constant-temperature bipolar pulse conductance detector |
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Assignee: Zhejiang Giian Test Institute Co., Ltd. Assignor: Peking University Contract record no.: 2012990000357 Denomination of invention: Ammonia test method and device Granted publication date: 20091118 License type: Exclusive License Open date: 20071024 Record date: 20120529 |
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