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Method for specifically detecting pentachlorophenol based on CdS quantum dots

A technology of pentachlorophenol and quantum dots, which is applied in the direction of analysis, chemiluminescence/bioluminescence, etc. through chemical reaction of materials, can solve the disadvantageous pentachlorophenol simple, rapid, specific detection, complex pretreatment, and expensive instruments. and other problems, to achieve the effect of high sensitivity, simple sample processing, and short detection time.

Inactive Publication Date: 2012-07-11
HUNAN UNIV
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Problems solved by technology

These detection methods have complex sample pretreatment, complicated process, time-consuming and expensive instruments, which are not conducive to the simple, rapid and specific detection of pentachlorophenol

Method used

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  • Method for specifically detecting pentachlorophenol based on CdS quantum dots
  • Method for specifically detecting pentachlorophenol based on CdS quantum dots
  • Method for specifically detecting pentachlorophenol based on CdS quantum dots

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the examples, rather than limiting the present invention.

[0029] Using the method of the present invention, the inventors have realized the simple, rapid and specific detection of pentachlorophenol in a certain soil in the Xiangjiang River.

[0030] 1. Extraction of pentachlorophenol in soil: 1g of soil taken from somewhere in the Xiangjiang River was mixed with 8mL of n-hexane under ultrasonic conditions for 4 hours; 2 Dry with air until the remaining n-hexane content in the filtrate is 0.2mL-0.6mL, and then a concentrated sample is obtained for testing.

[0031] 2. Detection of pentachlorophenol in soil:

[0032] 1) Separately prepare S 2 o 8 2- solution, pentachlorophenol solution of various standard concentrations;

[0033] 2) Pentachlorophenol solutions of various standard concentrations, concentrated samples were mixed with S-containing 2 o 8 2- The solution is mixed and set aside;...

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Abstract

The invention discloses a method for specifically detecting pentachlorophenol based on CdS quantum dots. The pentachlorophenol is an electron-rich body, and can be absorbed on the surface of CdS<*+> and is oxidized into tetrachlorobenzoquinone by hole h<+>, CdS<*+> quantum dots are consumed, and electroluminescent signals of the quantum dots are weakened, so that the pentachlorophenol is detected by detecting the change of the electroluminescent signals of the quantum dots. Compared with the traditional method, the invention has the advantages that: the method is high in sensitivity and specificity, and pentachlorophenol at the concentration of 0.008nmol / L can be detected by the method; meanwhile, the detection time is short, the treatment of a sample is simple, and the whole detection process spends not more than 30min; and the novel method can simply, conveniently, quickly and specifically detect the pentachlorophenol.

Description

Technical field: [0001] The invention relates to a new method for simple, fast and specific detection of pentachlorophenol based on the principle of quantum dot electroluminescence. Background technique: [0002] Pentachlorophenol is widely used as wood preservatives, herbicides, fungicides and insecticides. Pentachlorophenol is the most toxic of all phenols, and has strong carcinogenic, carcinogenic, and mutagenic effects; at the same time, due to its four significant characteristics of long-term residue, bioaccumulation, semi-volatility, and high toxicity, it is harmful to human health and The ecological environment poses a serious threat. Pentachlorophenol has been included in the blacklist of priority pollutants and persistent organic pollutants by the US Environmental Protection Agency and the State Environmental Protection Administration, and is a highly hazardous poison. Therefore, realizing the simple, rapid and specific detection of pentachlorophenol is of great si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/76
Inventor 罗胜联杨善丽夏斌元唐艳红刘承斌
Owner HUNAN UNIV
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