NDLI: PAHs in the Chinese environment: levels, inventory mass, source and toxic potency assessment.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wang, Ji-Zhong Zhu, Cheng-Zhu Chen, Tian-Hu
Spatial Coverage	China
Description	Country affiliation: China Author Affiliation: Wang JZ ( School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China. wangjizh@hfut.edu.cn)
Abstract	This paper presents a systematic but preliminary study on the levels, inventory mass, emission sources and risk of exposure to PAHs in China by examining 14 polycyclic aromatic hydrocarbons (from the 16 priority PAHs listed by the U.S. EPA, excluding naphthalene and acenaphthylene) in four main environmental media (air, water, soil and sediment). The concentration of individual PAHs in the air, soil, freshwater, seawater, freshwater sediment and marine sediment of China was compared with the global concentration range (GCR) of PAHs from a large number of studies. The PAH levels were found at the high end of the GCR in the air, at the upper middle of the GCR in the water body, and at the middle of the GCR in the soil and sediment. These indicate that PAHs still are emitted heavily in China. About 530 000 tons of Σ14PAH was estimated to be distributed into these four media in China. Soil possesses the highest proportion of the PAHs (60%), and the air has the lowest proportion (<0.5%). Therefore, the soil and sediment play an important role in the storage of PAHs. More than 10 thousand tons of PAHs are emitted from all kinds of sources. Firewood, straw, domestic and coking were considered as the main emissions of PAHs in the energy supply. A benzo[a]pyrene (BaP) based hazard quotient (HQ) was introduced to assess the potential toxic risk of exposure. The terrestrial water environment was found to have a high BaP exposure. The HQ value was more than 1 for 58% of freshwater and 39% of freshwater sediment samples. Urban and developed sites were considered to have high BaP exposure risk.
File Format	HTM / HTML
ISSN	20507887
Issue Number	6
Volume Number	15
e-ISSN	20507895
Journal	Environmental Science: Processes & Impacts
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2013-06-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Environmental Health Environmental Monitoring Environmental Pollutants Analysis Polycyclic Hydrocarbons, Aromatic Air China Environmental Exposure Fresh Water Geologic Sediments Humans Toxicity Seawater Soil Chemistry Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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