Transformation of hydroxylated and methoxylated 2,2′,4,4′,5-brominated diphenyl ether(BDE-99) in plants  

作　　者：Lili Pan Jianteng Sun Xiaodan Wu Zi Wei Lizhong Zhu 

机构地区：[1]Department of Environmental Science, Zhejiang University, Hangzhou 310058, China. [2]Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China [3]Analysis and Measurement Center, Zhejiang University, Hangzhou 310058, China

出　　处：《Journal of Environmental Sciences》2016年第11期197-202,共6页环境科学学报（英文版）

基　　金：supported by the National Basic Research Program (973) of China (No. 2014CB441104);National Natural Science Foundation of China (Nos. 21520102009 and 21137003);the Zhejiang Provincial Natural Science Foundation of China (LY14B070009)

摘　　要：The occurrence and fate of hydroxylated polybrominated diphenyl ethers（OH-PBDEs） and methoxylated polybrominated diphenyl ethers（Me O-PBDEs） have received significant attention. However, there is limited information on the metabolism relationship between OH-pentaB DEs and MeO-pentaB DEs that were frequently detected with relatively high concentrations in the environment. In this study, the biotransformation between OH-BDE-99 and MeO-BDE-99 was investigated in rice, wheat, and soybean plants. All the three plants can metabolize OH-BDE-99 to corresponding homologous methoxylated metabolites, while the transformation from MeO-BDE-99 to OH-BDE-99 could only be found in soybean. The conversion of parent compounds was the highest in soybean, followed by wheat and rice. Transformation products were found mainly in the roots, with few metabolites being translocated to the shoots and solution after exposure. The results of this study provide valuable information for a better understanding of the accumulation and transformation of OH-PBDEs and MeO-PBDEs in different plants.The occurrence and fate of hydroxylated polybrominated diphenyl ethers（OH-PBDEs） and methoxylated polybrominated diphenyl ethers（Me O-PBDEs） have received significant attention. However, there is limited information on the metabolism relationship between OH-pentaB DEs and MeO-pentaB DEs that were frequently detected with relatively high concentrations in the environment. In this study, the biotransformation between OH-BDE-99 and MeO-BDE-99 was investigated in rice, wheat, and soybean plants. All the three plants can metabolize OH-BDE-99 to corresponding homologous methoxylated metabolites, while the transformation from MeO-BDE-99 to OH-BDE-99 could only be found in soybean. The conversion of parent compounds was the highest in soybean, followed by wheat and rice. Transformation products were found mainly in the roots, with few metabolites being translocated to the shoots and solution after exposure. The results of this study provide valuable information for a better understanding of the accumulation and transformation of OH-PBDEs and MeO-PBDEs in different plants.

关 键 词：OH-PBDEs MeO-PBDEs Biotransformation Plant 

分 类 号：X592[环境科学与工程—环境工程] X171.5