Development of a Passive Sampler To Measure Personal Exposure to Gaseous PAHs in Community Settings
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- 作者：Zhihua Fan ; Kyung Hwa Jung ; Paul J. Lioy
- 刊名：Environmental Science & Technology
- 出版年：2006
- 出版时间：October 1, 2006
- 年：2006
- 卷：40
- 期：19
- 页码：6051 - 6057
- 全文大小：194K
- 年卷期：v.40,no.19(October 1, 2006)
- ISSN：1520-5851
文摘
A sensitive, simple, and cost-effective passive samplingmethodology was developed to quantify personal exposureto gaseous polycyclic aromatic hydrocarbons (PAHs). A Fan-Lioy passive PAH sampler (FL-PPS) is constructed from320 sections of 1-cm long SPB-5 GC columns (0.75-mm i.d.and 7-
m film thickness), similar to a mini-honeycombdenuder. Given the unique feature of the GC column stationaryphase, gaseous PAHs are collected on the inner surfacesof the columns by molecular diffusion and thermallydesorbed to GC/MS for analysis. The sampling rates of FL-PPS were determined in the laboratory using a controlledtest atmosphere containing eight PAHs for a range offace velocity, temperature, relative humidity, PAHconcentration, and sampling duration. The sampling rate(mean, %RSD, cm3/min) was 26.7 (21%) for acenaphthylene,37.6 (25%) for acenaphthene, 56.2 (13%) for fluorene,49.1 (25%) for phenanthrene, 62.7 (22%) for anthracene,65.4 (24%) for fluoranthene, and 64.4 (18%) for pyrene overa sampling duration of 8-48 h. The sampling rate fornaphthalene was ~14.1 (12%) cm3/min over a samplingperiod of 8 h but decreased along with an increase ofsampling time. The effects of temperature, humidity, facevelocity, and PAH concentration on the sampling rate werenot significant for all the compounds tested. A reasonableagreement (<30%) was obtained for most compoundsmeasured by FL-PPS and a conventional active PAH samplingmethod colocated side-by-side in the field, but a samplingtime of 24 h or longer was required for detection ofless abundant PAHs in community settings.
m film thickness), similar to a mini-honeycombdenuder. Given the unique feature of the GC column stationaryphase, gaseous PAHs are collected on the inner surfacesof the columns by molecular diffusion and thermallydesorbed to GC/MS for analysis. The sampling rates of FL-PPS were determined in the laboratory using a controlledtest atmosphere containing eight PAHs for a range offace velocity, temperature, relative humidity, PAHconcentration, and sampling duration. The sampling rate(mean, %RSD, cm3/min) was 26.7 (21%) for acenaphthylene,37.6 (25%) for acenaphthene, 56.2 (13%) for fluorene,49.1 (25%) for phenanthrene, 62.7 (22%) for anthracene,65.4 (24%) for fluoranthene, and 64.4 (18%) for pyrene overa sampling duration of 8-48 h. The sampling rate fornaphthalene was ~14.1 (12%) cm3/min over a samplingperiod of 8 h but decreased along with an increase ofsampling time. The effects of temperature, humidity, facevelocity, and PAH concentration on the sampling rate werenot significant for all the compounds tested. A reasonableagreement (<30%) was obtained for most compoundsmeasured by FL-PPS and a conventional active PAH samplingmethod colocated side-by-side in the field, but a samplingtime of 24 h or longer was required for detection ofless abundant PAHs in community settings.