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A kind of water quality quaternary ammonium salt semi-quantitative detection method

A semi-quantitative detection, quaternary ammonium salt technology, applied in the measurement of color/spectral properties, analysis by chemical reaction of materials, and material analysis by observing the impact on chemical indicators, etc., can solve the problem of long processing and analysis time. , It is difficult to use real-time rapid monitoring and other problems to achieve the effect of simple operation

Active Publication Date: 2016-08-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] All existing methods need to be carried out in a laboratory, and special instruments and technicians must be equipped to operate
At the same time, it takes a long time for sample pretreatment and analysis, and it is difficult to be used in occasions where real-time and rapid monitoring of samples collected on site is required.

Method used

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  • A kind of water quality quaternary ammonium salt semi-quantitative detection method
  • A kind of water quality quaternary ammonium salt semi-quantitative detection method
  • A kind of water quality quaternary ammonium salt semi-quantitative detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) The components of the quaternary ammonium salt detection reagent: Dadan yellow: EDTA: thymol blue: sodium hydroxide are mixed according to the mass ratio of 100:5:20:100.

[0026] (2) The test standard color cards are purchased from Shenzhen Qiantongcai Trading Co., Ltd., the models are (CU color card series): PANTONE553C, PANTONE556C, PANTONE715C, PANTONE1575C, PANTONE7619C. These 5 models respectively represent color blocks with absorption wavelengths of 400nm, 415nm, 440nm, 480nm, and 500nm, and represent the concentration of quaternary ammonium salt: 0-150-300-400-600mg / L.

[0027] (3) During detection, draw 4 ml of the liquid to be tested into the reaction tube, add 3-5 drops of the quaternary ammonium salt detection reagent, and immediately determine the concentration of the quaternary ammonium salt by colorimetry after mixing.

[0028] After mixing, compare it with the standard color card immediately. If the color is consistent with PANTONE553C color, the con...

Embodiment 2

[0034](1) The components of the quaternary ammonium salt detection reagent are mixed together at the ratio of 100:50:100:10, Dadan yellow: EDTA: thymol blue: sodium hydroxide.

[0035] (2) The test standard color cards are purchased from Shenzhen Qiantongcai Trading Co., Ltd., the models are (CU color card series): PANTONE553C, PANTONE555C, PANTONE559C, PANTONE7555C, PANTONE1595C, PANTONE7626C. These 6 models are composed of color blocks representing absorption wavelengths of 400nm, 410nm, 425nm, 450nm, 490nm, and 500nm, respectively, representing the concentration of quaternary ammonium salts: 0-100-200-250-500-1000mg / L.

[0036] (3) During detection, draw 3 ml of the liquid to be tested into the reaction tube, add 3-5 drops of the quaternary ammonium salt detection reagent, and immediately determine the concentration of the quaternary ammonium salt by colorimetry after mixing.

[0037] After mixing, compare it with the standard color card immediately. If the color is consist...

Embodiment 3

[0043] (1) The components of the quaternary ammonium salt detection reagent are mixed together at the ratio of 100:100:200:60, Dadan Yellow: EDTA: Thymol Blue: Sodium Hydroxide.

[0044] (2) The testing standard color cards are purchased from Shenzhen Qiantongcai Trading Co., Ltd., the models are (CU color card series): PANTONE553C, PANTONE559C, PANTONE715C, PANTONE1575C, PANTONE1595C. These 5 models respectively represent color blocks with absorption wavelengths of 400nm, 420nm, 440nm, 480nm, and 500nm, and represent the concentration of quaternary ammonium salts: 0-200-300-400-500mg / L.

[0045] (3) During detection, draw 5 ml of the liquid to be tested into the reaction tube, add 3-5 drops of the quaternary ammonium salt detection reagent, and immediately determine the concentration of the quaternary ammonium salt by colorimetry after mixing.

[0046] After mixing, compare it with the standard color card immediately. If the color is consistent with PANTONE553C color, the con...

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Abstract

The invention discloses a semi-quantitative detection method for water quality quaternary ammonium salt, which comprises the following steps: absorbing the water sample to be tested into a reaction tube, adding a quaternary ammonium salt detection reagent dropwise into the reaction tube, and immediately mixing with the detection standard color card after shaking well Colorimetry, compare the color of the detection standard color card to determine the content of the quaternary ammonium salt. The quaternary ammonium salt detection reagent comprises dadan yellow, EDTA, thymol blue and sodium hydroxide, and the component ratio is: dadan yellow: EDTA: thymol blue: sodium hydroxide is 100 by mass ratio: (5-100): (20-200): (10-100) mixed. The detection method of the present invention can quickly detect the concentration of quaternary ammonium salts in water samples only by using quaternary ammonium salt detection reagents, reaction tubes, and detection standard color cards.

Description

technical field [0001] The invention relates to the technical field of water and waste water detection, in particular to a semi-quantitative detection method for water quality quaternary ammonium salts. Background technique [0002] Cationic surfactants have a very wide range of uses, such as softeners and detergents in the textile industry, foaming agents, defoamers, thickeners, and fluorescent agents in the daily chemical industry, and as Disinfectants, emulsifiers, etc. With the widespread production and use of cationic surfactants, a large amount of wastewater containing surfactants is inevitably discharged into rivers, oceans and other natural water bodies. It not only directly endangers the aquatic environment, but also inhibits the degradation of other toxic substances, resulting in serious water pollution. Because cationic surfactants can produce strong toxicity to enzymes and coenzymes by interacting with biological cell membranes, and thus have an increasing impa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78G01N21/31
Inventor 吴丹刘东红叶兴乾陈健初胡亚芹陈士国丁甜
Owner ZHEJIANG UNIV
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