A method for measuring microcystin concentration

A microcystin and concentration technology, applied in the field of environmental protection, can solve the problems of low selectivity, high cost, and complicated operation of the detection method, and achieve the effect of simple operation, low detection limit, and avoiding background fluorescence interference
CN109696430BActive Publication Date: 2021-07-27YANGTZE NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANGTZE NORMAL UNIVERSITY
Publication Date
2021-07-27

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Abstract

The present invention provides a method for determining the concentration of microcystins, based on the fact that molybdenum disulfide quantum dots can interact with gold nanoparticles through the inner filter effect, but microcystins can affect the aptamer-modified gold nanoparticles in The degree of aggregation and dispersion in high-salt solution realizes the detection of microcystin concentration in water environment. The up-conversion fluorescence of molybdenum disulfide used in the present invention can effectively avoid the interference of background matrix fluorescence in the water environment, has good optical stability, accurate and reliable detection results, low cost, simple operation, environmental protection, and good detection specificity. Avoid the influence of other common metal ions or anions on the determination of microcystins, strong anti-interference ability, sensitive and reliable results, low detection limit, fast response speed, the whole reaction process only takes 20 minutes, which greatly improves the detection efficiency and is stable It has good performance, can realize rapid and specific detection on-line in real time, and can be used for simple and rapid detection of microcystins in actual water environment.
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Description

technical field

[0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for measuring the concentration of microcystins based on up-conversion fluorescence molybdenum disulfide quantum dots. Background technique

[0002] Microcystins (MCs) are a class of cyclic heptapeptide hepatotoxins released by harmful cyanobacteria blooms. They have strong carcinogenic effects and are important environmental factors that induce liver cancer, gastroenteritis and other diseases. In view of the toxicity and harm of MCs, the World Health Organization (WHO) has listed MCs as harmful pollutants to be controlled in drinking water. MCs are listed together with hepatitis virus and aflatoxin as the three major environmental risk factors that induce the high incidence of primary liver cancer in southern my country. In this regard, the newly promulgated "Hygienic Standards for Drinking Water" (GB5749-2006) in 2006 The content of MCs is ...

Claims

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