Occurrence of brominated flame retardants (BFRs), organochlorine pesticides (OCPs), and polychlorinated biphenyls (PCBs) in agricultural soils in a BFR-manufacturing region of North China
Occurrence of brominated flame retardants (BFRs), organochlorine pesticides (OCPs), and polychlorinated biphenyls (PCBs) in agricultural soils in a BFR-manufacturing region of North China
复制标题
华北某 BFR 生产区农田土壤中溴化阻燃剂 (BFR)、有机氯农药 (OCP) 和多氯联苯 (PCB) 的存在情况
DOI：
10.1016/j.scitotenv.2014.02.023
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发表时间：
2014
影响因子：
9.8
通讯作者：
Mai Bi-Xian
中科院分区：
文献类型：
--
作者：
Zhu Zhi-Cheng;Chen She-Jun;Zheng Jing;Tian Mi;Feng An-Hong;Luo Xiao-Jun;Mai Bi-Xian
研究了华北地区最大的溴化阻燃剂（BFRs）制造和蔬菜种植中心（寿光）表层土壤中溴化阻燃剂（BFRs）、有机氯农药（OCPs）和多氯联苯（PCBs）的分布情况。BFRs总浓度为39.9 ~ 8145 ng/g，平均为1947 ng/g。其中十溴二苯乙烷（deca-BDEs）和四溴双酚A （TBBPA）含量最高，分别为1127和672 ng/g，其次是十溴二苯乙烷（DBDPE） （111 ng/g）和六溴环十二烷（HBCD） （37.5 ng/g）。除TBBPA外，该概况与中国BFR的生产和使用基本一致。虽然土壤中的低溴化二苯醚（三至七溴二苯醚）可能来自作为微量杂质的技术十溴二苯醚混合物和/或来自十溴二苯醚的降解，但十溴二苯醚已被证明在土壤中持久存在。OCPs浓度（44 ng/g）显著低于BFRs，且空间分布与BFRs相反，主要集中在工业区。由于区域扩散源的存在，多氯联苯（最低水平）呈现相对均匀的空间分布。据估计，整个土壤（20 cm）的土壤质量盘存量分别为1042、26和3.7 t。
We investigated the occurrence of brominated flame retardants (BFRs), organochlorine pesticides (OCPs), and polychlorinated biphenyls (PCBs) in the surface soils from the largest BFR-manufacturing and vegetable farming center (Shouguang) of North China. The total concentrations of BFRs ranged from 39.9 to 8145 ng/g dry weight with a mean of 1947 ng/g. The BFRs were dominated by decabromodiphenylethane (deca-BDEs) and tetrabromobisphenol A (TBBPA), with means of 1127 and 672 ng/g, respectively, followed by decabromodiphenyl ethane (DBDPE) (111 ng/g) and hexabromocyclododecanes (HBCD) (37.5 ng/g). This profile was generally consistent with the BFR production and use in China, except for TBBPA. Although the lower brominated BDEs (tri- through hepta-BDEs) in the soil may originate from technical deca-BDE mixtures as trace impurities and/or from the degradation of deca-BDEs, deca-BDE was shown to be persistent in the soil. The concentrations of OCPs (44 ng/g) were significantly lower than those of BFRs and displayed a spatial distribution opposite to that of BFRs, which was concentrated in the industrial zone. PCBs (with the lowest levels) showed a relatively uniform spatial distribution because of regional diffusive sources. The mass inventories for the entire land soil (20-cm) were estimated to be 1042, 26, and 3.7 t for BFRs, OCPs, and PCBs, respectively.