Tao Yuqiang, Zhang Shuzhen, Wang Zijian, Ke Runhui, Shan Xiao-quan, Christie Peter
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China.
Water Res. 2008 Feb;42(3):754-62. doi: 10.1016/j.watres.2007.08.006. Epub 2007 Aug 11.
A new passive sampling device (PSD), a triolein-embedded cellulose acetate membrane (TECAM), was used to biomimetically accumulate naphthalene, phenanthrene, pyrene and benzo[a]pyrene from ten spiked soils and a soil spiked with different concentrations of these polycyclic aromatic hydrocarbons (PAHs). TECAM exposure conditions were optimized. The quantities of PAHs accumulated by TECAMs were positively and linearly related to their concentrations in the soil. PAHs accumulated by TECAMs were negatively related to soil organic matter (SOM) and positively related to the dissolved organic carbon (DOC) according to the results obtained from ten spiked soils. Aging time (1-150 days) had a significant effect on accumulation of PAHs by TECAMs. A good linear relationship (R2=0.970-0.993) was observed between TECAM-accumulated PAHs and PAHs accumulated by earthworms (Eisenia andrei). The data indicate that TECAM represents a useful surrogate to estimate the bioavailability of PAHs and perhaps other hydrophobic organic contaminants (HOCs) in soils.
一种新型被动采样装置（PSD），即三油酸甘油酯包埋醋酸纤维素膜（TECAM），被用于从十种加标土壤以及一种添加了不同浓度这些多环芳烃（PAHs）的土壤中仿生累积萘、菲、芘和苯并[a]芘。对TECAM的暴露条件进行了优化。TECAM累积的PAHs量与土壤中它们的浓度呈正线性相关。根据从十种加标土壤获得的结果，TECAM累积的PAHs与土壤有机质（SOM）呈负相关，与溶解有机碳（DOC）呈正相关。老化时间（1 - 150天）对TECAM累积PAHs有显著影响。在TECAM累积的PAHs与蚯蚓（安德爱胜蚓）累积的PAHs之间观察到良好的线性关系（R² = 0.970 - 0.993）。数据表明，TECAM是一种有用的替代物，可用于估计土壤中PAHs以及或许其他疏水性有机污染物（HOCs）的生物可利用性。
