Method for detecting polycyclic aromatic hydrocarbon in ambient air

A polycyclic aromatic hydrocarbon, detection environment technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., to achieve high selectivity, good sensitivity, and eliminate interference.

Inactive Publication Date: 2017-06-13
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the detection of polycyclic aromatic hydrocarbons in ambient air by triple quadrupole tandem mass spectrometry, considering that the concentration of many polycyclic aromatic hydrocarbon monomers

Method used

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  • Method for detecting polycyclic aromatic hydrocarbon in ambient air
  • Method for detecting polycyclic aromatic hydrocarbon in ambient air
  • Method for detecting polycyclic aromatic hydrocarbon in ambient air

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A method for detecting polycyclic aromatic hydrocarbons contained in ambient air, comprising the following steps:

[0027] (1) Sampling: The ambient air sampler is used to continuously collect ambient air samples at the sampling point; the particles and aerosols are collected respectively by the sampler; the ambient air sampler is composed of a plurality of samplers 2 connected in parallel, and the sampler 2 is composed of upper and lower parts Composition, the upper part is filled with glass fiber filter membrane, the lower part is filled with PUF and XAD2 resin; the sampler 2 is packaged inside the shell 7, and the gas suction port 1 of each sampler 2 is set on the shell 7, Each sampler 2 is connected to a flow controller 4 through a pipeline 3, and all the flow controllers 4 are connected to the pressure chamber 5, and the other end of the pressure chamber 5 is connected to the vacuum pump 6, and the flow controller 4 passes the pressure The chamber 5 is connected to...

Embodiment 2

[0038] A method for detecting polycyclic aromatic hydrocarbons contained in ambient air, comprising the following steps:

[0039] (1) Sampling: The ambient air sampler is used to continuously collect ambient air samples at the sampling point; the particles and aerosols are collected respectively by the sampler; the ambient air sampler is composed of a plurality of samplers 2 connected in parallel, and the sampler 2 is composed of upper and lower parts Composition, the upper part is filled with Teflon filter membrane, the lower part is filled with PUF and XAD2 resin; the sampler 2 is packaged inside the shell 7, and the gas suction port 1 of each sampler 2 is set on the shell 7 , each sampler 2 is connected to a flow controller 4 through a pipeline 3, all flow controllers 4 are connected to the pressure chamber 5, and the other end of the pressure chamber 5 is connected to the vacuum pump 6, and the flow controller 4 passes The pressure chamber 5 is connected to the vacuum pump...

Embodiment 3

[0050] A method for detecting polycyclic aromatic hydrocarbons contained in ambient air, comprising the following steps:

[0051] (1) Sampling: The ambient air sampler is used to continuously collect ambient air samples at the sampling point; the particles and aerosols are collected respectively by the sampler; the ambient air sampler is composed of a plurality of samplers 2 connected in parallel, and the sampler 2 is composed of upper and lower parts Composition, the upper part is filled with glass fiber filter membrane, the lower part is filled with PUF and XAD2 resin; the sampler 2 is packaged inside the shell 7, and the gas suction port 1 of each sampler 2 is set on the shell 7, Each sampler 2 is connected to a flow controller 4 through a pipeline 3, and all the flow controllers 4 are connected to the pressure chamber 5, and the other end of the pressure chamber 5 is connected to the vacuum pump 6, and the flow controller 4 passes the pressure The chamber 5 is connected to...

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Abstract

The invention discloses a method for detecting polycyclic aromatic hydrocarbon in ambient air. The method includes steps of 1), continuously collecting ambient air samples in sampling points by the aid of ambient air sampling instruments; 2), extracting polycyclic aromatic hydrocarbon in the samples by the aid of accelerated solvent extraction processes; 3), purifying obtained extract liquid by the aid of column chromatography processes after extraction is completely carried out; 4), concentrating fraction collected after column chromatography is carried out; 5), carrying out detection by the aid of gas chromatography-triple quadrupole rods tandem mass spectrometry; 6), qualitatively and quantitatively analyzing the samples and calculating the content of the polycyclic aromatic hydrocarbon in the ambient air. The method has the advantages that the multiple samples can be simultaneously collected, impurity removal and purification can be carried out on the samples, accordingly, interference of various matrixes on the actual samples can be eliminated, and the polycyclic aromatic hydrocarbon in the ambient air can be detected by the aid of gas chromatography-triple quadrupole rods tandem mass spectrometry processes; the method is good in sensitivity and high in selectivity, and quick and effective detection results can be obtained.

Description

technical field [0001] The invention relates to the field of environmental detection, in particular to a method for detecting polycyclic aromatic hydrocarbons contained in ambient air. Background technique [0002] Polycyclic aromatic hydrocarbons (PAHs) are a class of cyclic compounds containing two or more benzene rings linked together. They are widely found in the environment and are the earliest carcinogens discovered. Among the main carcinogens, more than 200 belong to this type of compound, and both the US Environmental Protection Agency and the European Union have listed them as priority pollutants for control. At present, the common detection methods of PAHs include high performance liquid chromatography, gas chromatography, gas chromatography-mass spectrometry and so on. Gas chromatography-triple quadrupole tandem mass spectrometry is an extremely selective and sensitive detection technique that performs exceptionally well for the detection of trace contaminants in...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/06
CPCG01N30/06G01N30/88
Inventor 赵波贺德春魏东洋黎玉清青宪尹文华付建平
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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