On-site quick detection method for organic pollutants in water

A technology of organic pollutants and detection methods, which is applied in the field of environmental protection technology or chemical analysis, can solve the problems that cannot fully meet the on-site emergency detection of organic pollutants, and the on-site detection performance is limited, so as to achieve fast detection and analysis speed and easy operation. Convenience and high-sensitivity effects

Inactive Publication Date: 2011-07-20
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

These two techniques have good qualitative ability and high analytical sensitivity for organic pollutants in water, but they both require more complicated pre-treatment of polluted water samples or use high-purity inert gas as a carrier gas. , and there is a certain range limitation on the detected organic p...

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  • On-site quick detection method for organic pollutants in water
  • On-site quick detection method for organic pollutants in water
  • On-site quick detection method for organic pollutants in water

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Embodiment Construction

[0038] Below in conjunction with accompanying drawing, provide the specific embodiment of the on-the-spot rapid detection method of organic pollutants in water of the present invention, to describe the present invention in detail, but protection scope of the present invention is not limited to following implementation introduction, all done according to the method of the present invention Equivalent changes or modifications should be regarded as the scope of protection of the present invention.

[0039] A method for rapid on-site detection of organic pollutants in water, the steps of which are:

[0040] (1) Take silver nitrate (AgNO 3 ) was dissolved in ultrapure water, and 100ml mass ratio was prepared as 0.02% silver nitrate solution, heated to 95°C (slight boiling), and 2mL of 1% sodium citrate aqueous solution and 2mL mass ratio of 15% polysaccharide were added dropwise. Vinylpyrrolidone, continuously boiled and stirred for 60 minutes, then cooled to room temperature to o...

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Abstract

The invention relates to the technical field of environmental protection or chemistry analysis, which is an on-site quick detection method for organic pollutants in water; wherein on-site quick separation is carried out on various types of organic pollutants in a polluted water sample to be detected with thin layer chromatography, and on-site quick detection is carried out on the organic pollutants by using surface enhancement Raman spectroscopy technology. The method comprises the following steps of: firstly, preparing the active base of a high-density surface reinforced Raman spectrum; secondly, establishing a characteristic-peak strength-density standard curve map; thirdly, separating the organic pollutants which are stabilized on a chromatographic sheet; fourthly, obtaining the surface reinforced Raman spectrum map of the organic pollutants; and fifthly, carrying out contrast and detection. The method has the following benefits: the method has high detection and analysis speed, high sensitivity, wide detection range, low sample dosage and convenience for instrument carrying and operation; and the on-site quick qualitative analysis and semi-quantitative detection can be carried out on the organic pollutants, wherein the detective sensitivity can be less than 1 ppm.

Description

【Technical field】 [0001] The present invention relates to the field of environmental protection technology or chemical analysis technology, specifically, it is a method for on-site rapid detection of organic pollutants in water, especially the use of surface-enhanced Raman spectroscopy to detect organic pollutants in water pollution incidents A method for on-site rapid detection. 【technical background】 [0002] Due to the needs of society and the development of science, the chemical industry has produced (synthesized) a wide variety of organic compounds with different properties, which support the needs of industrial and agricultural production. However, sudden water pollution incidents caused by the accidental leakage of some organic compounds also occur from time to time, which will affect the ecological environment, people's health and sustainable development of society. Therefore, corresponding measures and effective rapid detection techniques are required. [0003] At...

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Application Information

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IPC IPC(8): G01N30/90G01N21/65
Inventor 龙亿涛李大伟渠陆陆翟文磊李扬梁杰
Owner EAST CHINA UNIV OF SCI & TECH
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