题目: Organophosphorus flame retardants in. mangrove sediments from the Pearl River Estuary, South China

作者: Hu Yong-Xia, Sun Yu-Xin*, Li Xiao, Xu Wei-Hai, Zhang Ying, Luo Xiao-Jun, Dai Shou-Hui, Xu Xiang-Rong*, Mai Bi-Xian

刊物: Chemosphere

年卷期页: 2017,181:433-439

摘要：Forty-eight surface sediments were collected from three mangrove wetlands in the Pearl River Estuary (PRE) of South China to investigate the distribution of organophosphorus flame retardants (OPFRs) and the relationship between OPFRs and microbial community structure determined by phospholipid fatty acid. Concentrations of SOPFRs in mangrove sediments of the PRE ranged from 13.2 to 377.1 ng g_1 dry weight. Levels of SOPFRs in mangrove sediments from Shenzhen and Guangzhou were significantly higher than those from Zhuhai, indicating that OPFRs were linked to industrialization and urbanization. Tris(chloropropyl)phosphate was the predominant profile of OPFRs in mangrove sediments from Shenzhen (38.9%) and Guangzhou (35.0%), while the composition profile of OPFRs in mangrove sediments from Zhuhai was dominated by tris(2-chloroethyl) phosphate (25.5%). The mass inventories of OPFRs in the mangrove sediments of Guangzhou, Zhuhai and Shenzhen were 439.5, 133.5 and 662.3 ng cm_2, respectively. Redundancy analysis revealed that OPFRs induced a shift in the structure of mangrove sediment microbial community and the variations were significantly correlated with tris(1,3-dichloro-2-propyl)phosphate and tris(2-butoxyethyl) phosphate.