Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, PR China.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2010 Jan;45(9):1076-84. doi: 10.1080/10934529.2010.486336.
The present study investigated the levels, distributions, profiles and possible sources of polycyclic aromatic hydrocarbons (PAHs) in agricultural soils around Zeguo, an emerging e-waste recycling town in Taizhou area, China. Concentrations of sixteen USEPA priority PAHs and soil organic matter were analyzed in 59 agricultural soil samples. The total PAH concentrations ranged from 262.6 to 3,420.2 microg/kg, with the average values in a gradually descending order: agricultural soil near e-waste recycling plants and workshops (1,336.0 microg/kg) > agricultural soil in villages with open burning and e-waste recycling activities (945.8 microg/kg) > agricultural soil in other villages (466.5 microg/kg). Analysis of the distribution patterns of the PAHs showed that phenanthrene, anthracene, fluoranthene and pyrene were the dominant species. The significant correlations among individual, low-molecular-weight (LMW), high-molecular-weight (HMW) and total PAHs and the very similar PAH profiles in the three sampling areas indicated that the PAHs might have come from similar sources. The ratios of Anthracene to sum of Anthracene and Phenanthrene concentrations (Ant/(Ant+Phe)) and fluoranthene to sum of fluoranthene and pyrene concentrations (Flt/(Flt+Pyr)) were calculated and principal component analysis (PCA) was performed and the results suggested that an anthropogenic source such as the combustion of a petroleum product or coal during the e-waste recycling process seemed to be the main source of PAHs in the Zeguo agricultural soil. In conclusion, soils taken from Zeguo agricultural areas were considered to be heavily polluted, and the emerging e-waste recycling activities had definite effects on PAH soil concentrations.
本研究调查了中国台州地区新兴电子废物回收小镇泽国周围农业土壤中多环芳烃（PAHs）的水平、分布、特征和可能来源。在 59 个农业土壤样本中分析了 16 种美国环保署优先 PAHs 和土壤有机质的浓度。总多环芳烃浓度范围为 262.6 至 3420.2 µg/kg，平均值呈逐渐下降的顺序：电子废物回收厂和车间附近的农业土壤（1336.0 µg/kg）>有露天焚烧和电子废物回收活动的村庄的农业土壤（945.8 µg/kg）>其他村庄的农业土壤（466.5 µg/kg）。多环芳烃分布模式分析表明，菲、蒽、荧蒽和芘为优势种。个体、低分子量（LMW）、高分子量（HMW）和总多环芳烃之间以及三个采样区非常相似的多环芳烃特征之间的显著相关性表明，这些多环芳烃可能来自相似的来源。计算了蒽与蒽和菲浓度之和的比值（Ant/(Ant+Phe)）和荧蒽与荧蒽和芘浓度之和的比值（Flt/(Flt+Pyr)），并进行了主成分分析（PCA），结果表明，电子废物回收过程中石油产品或煤的燃烧等人为源似乎是泽国农业土壤中多环芳烃的主要来源。总之，泽国农业区采集的土壤被认为受到了严重污染，新兴的电子废物回收活动对多环芳烃土壤浓度有一定影响。
