Use of a Versatile High Efficiency Multiparallel Denuder for the Sampling of PAHs in Ambient Air: Gas and Particle Phase Concentrations, Particle Size Distribution and Artifact Formation

被引:29
作者
Delgado-Saborit, Juana Maria [1 ]
Stark, Christopher [1 ]
Harrison, Roy M. [1 ,2 ]
机构
[1] Univ Birmingham Edgbaston, Sch Geog Earth & Environm Sci, Natl Ctr Atmospher Sci, Div Environm Hlth & Risk Management, Birmingham B15 2TT, W Midlands, England
[2] King Abdulaziz Univ, Ctr Excellence Environm Studies, Dept Environm Sci, Jeddah 21589, Saudi Arabia
基金
英国自然环境研究理事会;
关键词
POLYCYCLIC AROMATIC-HYDROCARBONS; SEMIVOLATILE ORGANIC-COMPOUNDS; ANNULAR DIFFUSION DENUDER; ATMOSPHERIC PAH; THEORETICAL-ANALYSIS; EVAPORATIVE LOSSES; PACK SYSTEM; REMOVAL; INDOOR; ADSORPTION;
D O I
10.1021/es402937d
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The design and performance of a multiparallel plate denuder able to operate at low and high-flow (3-30 L/min) for the collection of polycyclic aromatic hydrocarbon (PAH) vapor is described. The denuder, in combination with a micro orifice uniform deposit impactor (MOUDI) was used to assess processes of artifact formation in MOUDIs used with and without an upstream denuder. Duplicate sampling trains with an upstream denuder showed good repeatability of the measured gas and particle-phase concentrations and low break through in the. denuder (3.5-15%). The PAH size distributions within undenuded and denuded MOUDIs were studied. Use of the denuder altered the measured size distribution of PAHs toward smaller sizes, but both denuded and undenuded systems are subject to sampling artifacts.
引用
收藏
页码:499 / 507
页数:9
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