Method for detecting nitro polycyclic aromatic hydrocarbon in atmosphere and sampling device for detection of nitro polycyclic aromatic hydrocarbon
A polycyclic aromatic hydrocarbons and detection method technology, which is applied in the field of air pollutant detection, can solve problems such as inaccurate detection results, and achieve the effects of accurate detection results, elimination of interference, and high selectivity
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Embodiment 1
[0046] This embodiment provides a method for detecting nitro polycyclic aromatic hydrocarbons in the atmosphere, the method comprising:
[0047] S1: Sample sampling: use sampling materials to sample the air at the sampling site;
[0048] Quartz fiber filter membrane, PUF and XAD-2 resin were selected as sampling materials, and the sampling materials were pretreated before being loaded into the sampling device, including: placing the quartz fiber filter membrane in a muffle furnace for 6 hours at 450°C, and wrapping it with aluminum foil after cooling. Wrap it and place it in a desiccator; wash the PUF with boiling water, dry it, and place it in a mixed solvent of toluene and methanol (3:7) for Soxhlet extraction for 48 hours. After the extraction is completed, take it out and place it in a vacuum environment at 50°C Dry for 8 hours, pack it with aluminum foil and place it in an aluminum can; place XAD-2 resin in a mixed solvent of toluene and methanol (3:7) for Soxhlet extract...
Embodiment 2
[0070] This embodiment provides a method for detecting nitro polycyclic aromatic hydrocarbons in the atmosphere, the method comprising:
[0071] S1: Sample sampling: use sampling materials to sample the air at the sampling site;
[0072] Quartz fiber filter membrane, PUF and XAD-2 resin were selected as sampling materials, and the sampling material was pretreated before being loaded into the sampling device, including: placing the quartz fiber filter membrane in a muffle furnace for 4 hours at 400°C, and wrapping it with aluminum foil after cooling. Wrap it and place it in a desiccator; wash the PUF with boiling water, dry it, and place it in a mixed solvent of toluene and methanol (1:4) for Soxhlet extraction for 36 hours. After the extraction is completed, take it out and place it in a vacuum environment at 40°C Dry for 6 hours, pack it with aluminum foil and place it in an aluminum can; place the XAD-2 resin in a mixed solvent of toluene and methanol (1:4) for Soxhlet extra...
Embodiment 3
[0085] This embodiment provides a method for detecting nitro polycyclic aromatic hydrocarbons in the atmosphere, the method comprising:
[0086] S1: Sample sampling: use sampling materials to sample the air at the sampling site;
[0087] Quartz fiber filter membrane, PUF and XAD-2 resin were selected as sampling materials, and the sampling materials were pretreated before loading into the sampling device, including: placing the quartz fiber filter membrane in a muffle furnace for 8 hours at 500°C, and after cooling, cover it with aluminum foil Wrap it and place it in a desiccator; wash the PUF with boiling water, dry it, and place it in a mixed solvent of toluene and methanol (2:3) for Soxhlet extraction for 60 hours. After the extraction is completed, take it out and place it in a vacuum environment at 60°C Dry for 12 hours, pack it with aluminum foil and place it in an aluminum can; place the XAD-2 resin in a mixed solvent of toluene and methanol (2:3) for Soxhlet extraction...
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