Correlation between the amounts of polycyclic aromatic hydrocarbons and mutagenicity of airborne particulate samples from Taichung city, Taiwan

被引:44
作者
Kuo, CY [1 ]
Cheng, YW [1 ]
Chen, CY [1 ]
Lee, H [1 ]
机构
[1] Chung Shan Med & Dent Coll, Inst Toxicol, Taichung, Taiwan
关键词
polycyclic aromatic hydrocarbons; mutagenicity; airborne particulates;
D O I
10.1006/enrs.1998.3838
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Taichung is the largest city in the central part of Taiwan, and its air pollution problems are similar to those in other large cities around the world. To evaluate the potential of the air pollution and identify major pollutant sources in this city, 181 airborne particulate samples were collected biweekly from seven locations around Taichung over an entire year. The mutagenicity of acetone extracts of the air samples was evaluated using the Salmonella/microsomal test with Salmonella typhimurium TA98 in the presence and absence of S9 mixtures. The air samples from September 1994 showed the highest direct and indirect mutagenicity among the 12 months, whereas those from October and June had the lowest direct and indirect mutagenicity, respectively. To elucidate the correlation between mutagenicity and polycyclic aromatic hydrocarbons (PAHs), high-performance liquid chromatography was used to determine the amount of each of 10 PAHs in the air samples. Among the 10 PAHs, the monthly average amount of B[g,h,i]P in the samples was the highest, followed by B[a]FA, B[a]P, and B[k]FA. Linear regression analysis showed a positive correlation between monthly average total amounts of PAHs and indirect mutagenicity. The monthly average amount of B[g,h,i]P was correlated more with indirect mutagenicity than with other PAHs. B[g,h,i]P is an indicator PAH emitted from both diesel and gasoline engine exhaust. Thus, we suggest that mobile air pollutant sources in Taichung City may be more significant than stationary ones. Moreover, B[g,h,i]P seems to act as a mutagenicity indicator compound in air samples from Taichung City. (C) 1998 Academic Press.
引用
收藏
页码:43 / 49
页数:7
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