Second-order mass spectrometric detection method for bisphenol substances in water environment

A detection method, the technology of secondary mass spectrometry, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of low accuracy and precision, interference, etc., to improve sensitivity and eliminate the interference of interfering substances, and no emulsification phenomenon Effect

Inactive Publication Date: 2016-01-20
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing bisphenols pollutants analysis method is interfered by the natural water body matrix and has low accuracy and precision, and proposes a secondary mass spectrometry detection method for bisphenols in the water environment

Method used

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  • Second-order mass spectrometric detection method for bisphenol substances in water environment
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  • Second-order mass spectrometric detection method for bisphenol substances in water environment

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specific Embodiment approach 1

[0033] The secondary mass spectrometry detection method of bisphenols in the water environment of the present embodiment, the detection method is realized by the following steps:

[0034] Step 1. Sample extraction process of bisphenols:

[0035] First, the raw water samples in the water intake environment are placed in an ultrasonic cleaner for ultrasonic treatment, and the pH value is adjusted to 4;

[0036] Second, take the HLB-type solid-phase extraction column, which is called WatersOasisHLB-type solid-phase extraction column, and use the automatic solid-phase extraction instrument to activate it with ethyl acetate, methanol, and pure water in sequence;

[0037] Thirdly, take the water sample after acidification and carry out solid-phase extraction and enrichment through HLB-type solid-phase extraction to complete the sample loading operation;

[0038] Fourth, after the sample loading operation is completed, rinse the HLB-type solid-phase extraction column with eluent to ...

specific Embodiment approach 2

[0053] The difference from Embodiment 1 is that the secondary mass spectrometry detection method of bisphenols in the water environment of this embodiment includes TDP, BPA, BPB, BPS, BPC, BPAF, TBA and PPDP. Among them, TDP is thiodiphenol, BPA is bisphenol A, BPB is bisphenol B, BPS is bisphenol S, BPC is bisphenol C, BPAF is bisphenol AF , TBA is tert-butanol, PPDP is 4,4'-dihydroxybiphenyl.

specific Embodiment approach 3

[0054] The difference from specific embodiment 1 or 2 is that in the secondary mass spectrometry detection method of bisphenols in the water environment of this embodiment, during the sample extraction process of the bisphenols described in step 1, the raw water in the water intake environment When the sample is placed in an ultrasonic cleaner for ultrasonic treatment, the volume of the raw water sample in the water environment is 500mL; and the raw water sample in the water environment is placed in the ultrasonic cleaner for ultrasonic treatment, and then passed through a GF / F glass fiber filter membrane. filter.

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Abstract

The invention relates to a second-order mass spectrometric detection method for bisphenol substances in a water environment, and belongs to the field of bisphenol substance detection. The problems that an existing analysis method for bisphenol pollutants is low in accuracy and precision due to interference of a natural water body matrix are solved. According to the second-order mass spectrometric detection method for the bisphenol substances in the water environment, an HLB column is adopted for solid-phase extraction, an amino column is purified, a full scanning mode is selected and used for qualitative and quantitative detection, all target objects used in a sample can be detected out at the same time by means of the mode, the mode is used for analyzing trace substances in a complex matrix, and for each substance, only one or two specific pairs of parent ions and daughter ions are selected to be detected. Matrix interference can be effectively removed, and sensitivity of detection and accuracy of qualitation and quantitation are improved.

Description

technical field [0001] The invention relates to a secondary mass spectrometry detection method for bisphenols in water environment. Background technique [0002] Bisphenols are a class of fine chemicals with similar chemical structures, generally referring to a class of substances with two hydroxyphenyl structures. According to the different substituents on the hydroxyphenyl group and the carbon bridge, it can be divided into different analogues. The most common ones are TDP, bisphenol A (BPA), bisphenol B (BPB), bisphenol S (BPS), bisphenol C (BPC), bisphenol AF (BPAF), TBA, PPDP. The industrial synthesis of such substances is mainly through the condensation of ketones and aldehydes with aromatic ring hydrocarbons or their derivatives. Such compounds are widely used in industrial production due to their stable chemical properties, high temperature resistance, heat resistance, good ductility, simple production process and low cost. However, since the structures of these c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
Inventor 陈忠林尹航靳倩倩
Owner HARBIN INST OF TECH
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