Abstract:The concentrations of 15 PAHs in eleven surface sediment samples collected from inland rivers in Fuzhou City were analyzed. The results showed that the total concentrations of 15 PAHs ranged from 84.3 to 2248.1 μg/kg and the average was 899.6 μg/kg, which was at the intermediate pollution level. The geographical distribution of the total PAHs can be characterized by higher concentration in the southern and central region and lower concentration in the northern, eastern and western region of Fuzhou city. The total concentration of 15 PAHs had a significantly positive correlation with the total organic carbon concentration in sediments (r=0.7829, P<0.05). Among the 15 PAHs, the concentration of 11 PAH isomers had significant positive correlations with the concentration of the total organic carbon (r=0.6557~0.9256, P<0.05),and the concentration of 12 PAH isomers had highly significant correlations between each other (r=0.6706~0.9908, P<0.01). The diagnostic ratios indicated that the sources of PAHs in sediments were mixed and mainly derived from local traffic pollution. The ecological risks of PAHs in sediments were evaluated according to the sediment quality guideline ERL (Effects Range Low). The concentrations of Ace, Flu and Phe in two sediment samples and those of Ace and Flu in one sediment sample exceeded ERL value. In the case of average ERL quotient of the PAH species, only one sediment sample had the average ERL quotient value greater than 1, and had certain ecological risks.
陈卫锋, 倪进治, 杨红玉, 魏然, 洪惠玲, 杨玉盛. 福州内河沉积物中多环芳烃的分布、来源及其风险评价[J]. 中国环境科学, 2010, 30(12): 1670-1677.
CHEN Wei-Feng, NI Jin-Zhi, YANG Hong-Yu, WEI Ran, HONG Hui-Ling, YANG Yu-Sheng. Distribution, sources and ecological risks of PAHs in inland river sediments of Fuzhou City. . CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(12): 1670-1677.