CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, Anhui, China.
Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, Anhui Normal University, Wuhu, 241002, Anhui, China.
Arch Environ Contam Toxicol. 2019 Nov;77(4):594-604. doi: 10.1007/s00244-019-00660-7. Epub 2019 Aug 6.
A total of 39 lower brominated PBDE congeners in surface soils from the Yellow River Delta Natural Reserve (YRDNR) were analyzed in the present study. The total concentrations of PBDEs (ΣPBDEs) ranged from "not detected" to 0.732 ng g, with a mean concentration of 0.142 ng g. The concentrations of the ΣPBDEs displayed no correlation with the content of the total organic carbon in the YRDNR. The ΣPBDEs concentrations in the Experimental Area were significantly higher than that of the Buffer Area and Core Area, and ΣPBDEs in soils in the North were lower than that of the South. PentaBDEs and HexaBDEs were the most abundant homologues, and the occurrence of PBDEs in the YRDNR may be attributed to the debromination and long range transport of DecaBDEs. Even though the cancer risk and mass inventory of PBDEs in the present study area were estimated to be very low, due to the widespread presence of PBDEs and the particularity of the natural reserve, vigilance should not be let up on the issue of environmental contamination caused by these compounds despite the gradual phase out of their commercial products in the world.
本研究分析了黄河三角洲自然保护区（YRDNR）表层土壤中 39 种低溴代 PBDE 同系物。PBDEs（ΣPBDEs）的总浓度范围为“未检出”至 0.732ng/g，平均值为 0.142ng/g。ΣPBDEs 浓度与 YRDNR 中总有机碳的含量无相关性。实验区的 ΣPBDEs 浓度明显高于缓冲区和核心区，北部土壤中的 ΣPBDEs 浓度低于南部。五溴二苯醚和六溴二苯醚是最丰富的同系物，YRDNR 中 PBDEs 的存在可能归因于十溴二苯醚的脱溴和长距离传输。尽管本研究区域的 PBDEs 的癌症风险和质量库存估计非常低，但由于 PBDEs 的广泛存在和自然保护区的特殊性，尽管世界上正在逐步淘汰其商用产品，仍不应放松对这些化合物造成的环境污染问题的警惕。
