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Owing to their lipophilic properties, the investigations of concentrations and spatial distributions of 16 EPA-PAHs in sediment and soil have been conducted extensively . However, the pollution of PAHs in sediment and soil is a longtime accumulation, and the process is complex, which could reflect the environment pollution degree of a long period of time, but can not reflect the current pollution and sources. Moreover, the soluble PAHs in surface water have direct toxicity to organism.

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zhl3868: ½ð±Ò+6, ·­ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£¸Ðл£¡ 2012-03-16 08:49:43
Based on their lipophilic properties,  concentrations and spatial distributions of 16 EPA-PAHs in sediment and soil have been extensivey investigated. However, the pollution of PAHs in sediment and soil is a long-term complex accumulation process which could not reflect the current pollution and sources, but the environment pollution degree in a long period. Moreover, the soluble PAHs in surface water have direct toxicity to organisms.
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2Â¥2012-03-16 08:30:52
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liufuliang

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Based on their lipophilic properties,  concentrations and spatial distributions of 16 EPA-PAHs in sediment and soil have been extensivey investigated. However, as a long-term complex accumulation process, the pollution of PAHs in sediment and soil could not reflect the current pollution and sources, but the environment pollution degree in a long period. Moreover, the soluble PAHs in surface water have direct toxicity to organisms.
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3Â¥2012-03-16 08:32:55
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zhl3868

½ð³æ (СÓÐÃûÆø)

According to the temperature and precipitation in the study area, dry period£¨¿ÝË®ÆÚ£©, flood period£¨·áË®ÆÚ£© and level period £¨Æ½Ë®ÆÚ£©are from February to May, June to September, and Octomber to January, respectively.
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