SEMIVOLATILE AND PARTICULATE POLYCYCLIC AROMATIC-HYDROCARBONS IN ENVIRONMENTAL TOBACCO-SMOKE - CLEANUP, SPECIATION, AND EMISSION FACTORS

被引：47

作者：

GUNDEL, LA

MAHANAMA, KRR

DAISEY, JM

机构：

[1] Indoor Environment Program, Energy and Environment Division, Lawrence Berkeley Laboratory, University of California, Berkeley

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1995年 / 29卷 / 06期

关键词：

D O I：

10.1021/es00006a026

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Studies of phase distributions and emission factors for polycyclic aromatic hydrocarbons (PAH) in environmental tobacco smoke (ETS) require collection and analysis of very small samples. To achieve the necessary selectivity and sensitivity, a method has been devised and tested for extraction and cleanup of gas- and particulate-phase ETS samples. Gas-phase species were trapped by polymeric sorbents, and particles were trapped on filters. The samples were extracted with hot cyclohexane, concentrated, and passed through silica solid-phase extraction columns for cleanup. After solvent change, the PAH were determined by high-performance liquid chromatography with two programmed fluorescence detectors. PAH concentrations in 15-mg aliquots of National Institute of Standards and Technology Standard Reference Material (SRM) 1649 (urban dust/organics) agreed well with published values. Relative precision at the 95% confidence level was 8% for SRM 1649 and 20% for replicate samples (5 mg) of ETS particles. Emission factors have been measured for a range of gas- and particulate-phase polycyclic aromatic hydrocarbons in ETS. The emission factors per cigarette were 13.0 +/- 0.5 mg of particulate matter, 11.2 +/- 0.9 mu g for gas-phase naphthalene, and 74 +/- 10 ng for particulate benzo[a]pyrene.

引用

页码：1607 / 1614

页数：8

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