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A kind of assay method of ppcps in environmental water sample

A determination method and technology for environmental water, which can be applied to measurement devices, instruments, scientific instruments, etc., can solve the problems of inability to accurately determine the content of PPCPs and prolong the storage time, and achieve the effect of reducing the detection limit of the method, prolonging the storage time, and reducing the impact.

Inactive Publication Date: 2019-12-06
TSINGHUA UNIV
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Problems solved by technology

So as to solve the problem that the existing determination method cannot accurately determine the content of PPCPs in environmental samples and prolong the storage time

Method used

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  • A kind of assay method of ppcps in environmental water sample
  • A kind of assay method of ppcps in environmental water sample
  • A kind of assay method of ppcps in environmental water sample

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Embodiment

[0044] The embodiments of the present invention provide a method for measuring PPCPs in water quality samples, comprising the following steps:

[0045] Sample extraction and purification steps: Measure about 1L of surface water or groundwater (filtered by glass fiber membrane) as the sample to be tested, put it into a water collection bottle made of brown glass or high-density polyethylene (HDPE), and use NaOH or HCl solution Adjust the pH to 4~5, add 50ng of each target isotope to purify the internal standard, mix well, and age for 30min; wash the solid phase extraction column Cleanert PEP (200mg , 6mL) to activate the filler and remove impurities; pass the aged water sample through the small column at a flow rate of 5-10mL / min; then wash the small column with 10mL of high-purity water, and vacuum until the filler is completely dry (about 1 ~2 hours); elute the small column twice with 4 mL of methanol, and collect the eluate in a 10 mL glass centrifuge tube; 0.025% formic ac...

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Abstract

The invention provides a method for measuring PPCPs (pharmaceuticals and personal care products) in an environmental water sample. The method is characterized by comprising an enrichment step, a separation and purification step and an analysis and detection step, wherein the enrichment step is performed as follows: after a to-be-measured water sample is filtered, n isotope purification interior labels and a 13C interior label extraction solution are added to the sample, and n is an integer which is larger than or equal to 1 and smaller than or equal to 16, preferably is 4-16 and more preferably is 8-15. The original analysis method is changed, an analysis method for multiple isotope interior labels is established, accordingly, most of targets have corresponding isotope markers serving as the interior labels, and correspondingly, as for the targets with isotope markers unable to be purchased, the isotope markers of substances with similar structures and properties are selected as the interior labels. The analysis method for multiple isotope interior labels is established and has higher sensitivity, lower limit of detection and higher stability.

Description

technical field [0001] The invention relates to the field of detecting PPCPs, in particular to a method capable of simultaneously detecting the contents of 16 kinds of PPCPs in surface water and groundwater samples. Background technique [0002] Pharmaceuticals and Personal Care Products (PPCPs) include human and veterinary medicines for treating diseases and ensuring health, personal care products such as bathing and skin care, and daily-use chemicals such as aromatherapy and disinfectants. Emerging pollutants that are potentially harmful to the ecological environment and human health have attracted widespread attention in the field of environmental science in terms of their environmental existence, risk assessment and toxicology. The sources of PPCPs in the environment are very extensive. Pharmaceutical factories, hospitals, livestock and poultry farms, wastewater and solid waste produced by human daily life contain a large amount of PPCPs, and enter the environment in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/88
CPCG01N30/88G01N2030/8809
Inventor 黄俊余刚高杰王薇李文超
Owner TSINGHUA UNIV
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