Passive sampler for polycyclic aromatic hydrocarbon in indoor air and sampling testing method thereof

A passive sampler, polycyclic aromatic hydrocarbon technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of expensive production and transportation, long analysis time, cumbersome operation, etc., and achieve simple production and operation, simple cleaning, The effect of good application prospects
CN102788718AInactive Publication Date: 2012-11-21NANJING UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV
Publication Date
2012-11-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a passive sampler for polycyclic aromatic hydrocarbon in indoor air and a sampling testing method thereof and belongs to the fields of sampling and determining of the polycyclic aromatic hydrocarbon. The sampler comprises a sampling bottle and a sampling support, the sampling bottle is filled with granular CarbotrapB or XAD-4 resin which serves as an adsorbent, and the sampling support is a double-layer metal support. Sampling testing steps comprise washing adsorbent; inversely placing the sampling bottle filled with the adsorbent at the position of a circular hole of the upper layer of the sampling support for sampling; extracting the polycyclic aromatic hydrocarbon in the adsorbent; determining quality Mg, i of 15 kinds of PAHs obtained by sampling of the passive sampler through gas-mass chromatography; determining sample rate through fitted line slope fitted by Veq-t; and calculating mean concentration Cg, i of the polycyclic aromatic hydrocarbon in the indoor air. The passive sampler is simple in manufacture and assembly and low in cost, only uses accelerated solvent extraction to extract the polycyclic aromatic hydrocarbon in the adsorbent, greatly reduces use of organic solvent, shortens analysis time and is applicable to sampling of the polycyclic aromatic hydrocarbon in the indoor air.
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Description

technical field

[0001] The invention belongs to the technical field of sampling and measuring polycyclic aromatic hydrocarbons, and more specifically relates to a passive sampler for polycyclic aromatic hydrocarbons in indoor air and a sampling and measuring method thereof. Background technique

[0002] Polycyclic aromatic hydrocarbons (PAHs) are important pollutants in the air and have a wide range of sources. The monitoring of their concentrations is of great significance for health risk assessment. PAHs mainly exist in 2-4 rings in indoor air, such as naphthalene, phenanthrene, pyrene and fluoranthene, which account for 80-95% in the gas phase at 20°C, and they are used as markers to indicate PAHs pollution and human exposure. more appropriate. Lu et al. (Environmental Pollution, 2008, 152(3): 569-575) analyzed PAHs in the indoor air of public places in Hangzhou, China through sampling and found that PAHs accounted for 98% in the gas phase and less than 2% in particulate...

Claims

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