Evaluation method of estrogen biodegradation potential in water based on three-dimensional fluorescence spectroscopy
A biodegradable, three-dimensional fluorescence technology, applied in fluorescence/phosphorescence, material excitation analysis, material analysis through optical means, etc., can solve the problems of many steps and high cost, and achieve simple operation, less sample consumption and high sensitivity Effect
Active Publication Date: 2021-06-15
NANJING INST OF GEOGRAPHY & LIMNOLOGY
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[0005] The purpose of the present invention is to solve the problems of many steps and high cost in the determination method of estrogen biodegradation potential in surface water, and propose to use the biological co-metabolism mechanism of organic matter and estrogen in water body to predict the biodegradation of estrogen, and confirm the three-dimensional biodegradation of organic matter. Correlation between fluorescence spectral features and estrogen biodegradation potential, based on which a simple and rapid method for evaluating estrogen biodegradation potential in water was developed
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[0039] The invention discloses a method for evaluating the biodegradation potential of estrogen in water based on three-dimensional fluorescence spectrum. The specific operations are as follows:
[0040] (1) Establish a linear correlation equation between the five-day biodegradation rate of estrogen and the percentage content of easily biodegradable fluorescent organic matter in surface water
[0041] ①Collect surface water samples S1, S2...S7 from different rivers and lakes, filter them with 0.45μm glass fiber membrane, measure the concentration of total organic carbon TOC, and dilute with ultrapure water or concentrate to TOC by rotary evaporation 1 The concentration is 5mg / L.
[0042] ②Scan the excitation-emission three-dimensional fluorescence spectrum of the treated water sample, perform Raman scattering correction and subtract the Rayleigh scattering effect. Export the processed three-dimensional fluorescence spectrum data to MATLAB, and use the drEEM software package (...
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The invention relates to a method for evaluating the biodegradation potential of estrogen in water based on three-dimensional fluorescence spectrum. The five-day biodegradation rate of estrogen is used to characterize the biodegradation potential of estrogen, and the fluorescent components whose central emission wavelength of the fluorescence peak is less than 380 nm are used to characterize easily biodegradable fluorescent organic compounds. Linear correlation equation for the content of fluorescent organic matter; scan the three-dimensional fluorescence spectrum of the water sample to be tested, combined with parallel factor analysis to calculate the content of easily biodegradable fluorescent organic matter; evaluate the biodegradation potential of estrogen in the water sample to be tested according to the linear correlation equation. The invention can realize the evaluation and prediction of the biodegradation behavior of estrogen in the surface water body, and is convenient for targeted pollution control; the sample consumption is small, the operation is simple, the cost is low, and no complicated sample processing and detection is required; the average relative error is not more than 10%.
Description
technical field [0001] The invention belongs to the technical field of environmental monitoring, and specifically relates to a method for evaluating the biodegradation potential of estrogen in water based on three-dimensional fluorescence spectrum, which can be applied to predict and simulate the environmental fate and risk of estrogen in surface water. Background technique [0002] Estrone, 17β-estradiol, estriol, ethinyl estradiol and ethinyl estradiol and other estrogens are an important class of endocrine disruptors in the environment, and are listed as a class of carcinogens and important environmental substances by the World Health Organization. pollutants. Estrogen participates in metabolic activities in organisms, and the unmetabolized parts and metabolites enter sewage treatment plants and livestock and poultry farms along with human and animal excrement, while conventional water treatment processes have limited estrogen treatment efficiency. Treated or incompletel...
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IPC IPC(8): G01N21/64
CPCG01N21/6428G01N2021/6419G01N2021/6423
Inventor 白雷雷江和龙
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY