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.
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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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