珠江口红树林湿地沉积物中四溴双酚A和六溴环十二烷的时空分布  

Spatiotemporal distribution of tetrabromobisphenol A and hexabromocyclododecane in mangrove sediments from the Pearl River Estuary

作　　者：张佳雯 李逸 李婷[1] 程远月[3] 王嘉彬 曾晶晶[1,3] 邓凯璇 周海超 孙毓鑫 ZHANG Jiawen;LI Yi;LI Ting;CHENG Yuanyue;WANG Jiabin;ZENG Jingjing;DENG Kaixuan;ZHOU Haichao;SUN Yuxin(Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety,School of Environment,South China Normal University,Guangzhou 510006,China;Eco-Environmental Monitoring and Scientific Research Center,Bureau of Eco-Environmental Supervision of South China Sea Water and Pearl River Basin,Ministry of Ecology and Environment,Guangzhou 510611,China;South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China;College of Life and Oceanography,Shenzhen University,Guangdong,Shenzhen 518071,China;Greater Bay Area Mangrove Wetland Research&Development Centre,Guangdong Neilingding-Futian National Nature Reserve Administration,Shenzhen 518040,China)

机构地区：[1]华南师范大学环境学院广东省化学品污染与环境安全重点实验室,广东广州510006 [2]生态环境部珠江流域南海海域生态环境监督管理局生态环境监测与科学研究中心,广东广州510611 [3]中国科学院南海海洋研究所,广东广州510301 [4]深圳大学生命与海洋科学学院,广东深圳518071 [5]广东内伶仃-福田国家级自然保护区管理局大湾区红树林湿地研发中心,广东深圳518040

出　　处：《海洋环境科学》2024年第6期882-888,共7页Marine Environmental Science

基　　金：广东省自然科学基金杰出青年项目(2021B1515020040);国家自然科学基金面上项目(42277246)。

摘　　要：本研究于2024年采集了广州南沙坦头、深圳福田和珠海淇澳岛红树林自然保护区的表层沉积物,研究了珠江口红树林沉积物中四溴双酚A(TBBPA)和六溴环十二烷(HBCD)的分布、组成及空间特征,并结合历史数据探讨了TBBPA和HBCD的时间变化趋势。结果表明,珠江口红树林沉积物中TBBPA含量显著低于HBCD,TBBPA和HBCD的含量和组成存在显著差异。深圳福田红树林沉积物中TBBPA含量较高,广州南沙坦头红树林HBCD含量较高。广州南沙以γ-HBCD为主,深圳福田以α-HBCD为主,珠海淇澳岛α-HBCD和γ-HBCD所占比例相近。与工业品HBCD组成相比,珠江口红树林湿地沉积物中α-HBCD所占比例明显增加,γ-HBCD所占比例显著减少。珠江口红树林湿地TBBPA含量呈现下降的趋势,表明珠江三角洲地区对TBBPA的使用在减少;红树林湿地HBCD含量仍在不断上升。Surface sediments were collected from Tantou Mangrove Nature Reserve in Nansha,Guangzhou;Futian Mangrove National Nature Reserve in Shenzhen;and Qi'ao Island Mangrove Provincial Nature Reserve in Zhuhai in 2024 to investigate the distribution,composition,and spatial distribution of tetrabromobisphenol A(TBBPA)and hexabromocyclododecane(HBCD),and temporal trends of TBBPA and HBCD were also discussed combining with the historical data.The results showed that concentrations of TBBPA in mangrove sediments were significantly lower than those of HBCD.Significant differences in levels and compositions of TBBPA and HBCD were found in sediments of the three mangrove wetlands from the Pearl River Estuary.The Futian mangrove wetland in Shenzhen had relative higher levels of TBBPA,and the Tantou mangrove wetland in Guangzhou had higher concentrations of HBCD.γ-HBCD andα-HBCD were the dominant HBCD in sediments form the Tantou mangrove wetland in Guangzhou and Futian mangrove wetland in Shenzhen,respectively.Sediments from Qi’ao Island mangrove wetland in Zhuhai had similar proportions of α-HBCD and γ-HBCD.Compared with the composition of HBCD industrial products,the proportions of α-HBCD in sediments of the three mangrove welands from the Pearl River Estuary increased significantly and the fractions of γ-HBCD decreased obviously.The concentrations of TBBPA in the mangrove wetlands of the Pearl River Estuary showed a decreasing trend,indicating that the use of TBBPA in the Pearl River Delta region is decreasing.The concentrations of HBCD in the mangrove wetlands is still increasing.

关 键 词：溴系阻燃剂 时空分布 沉积物 红树林 珠江口 

分 类 号：P736[天文地球—海洋地质] X131[天文地球—海洋科学]