摘要
采用气相色谱-质谱和^(210)Pb同位素定年分析法,对长江三角洲地区的沉积柱芯中多溴联苯醚的垂直分布特征进行研究,建立长江三角洲地区多溴联苯醚的历史沉积记录。研究结果表明:在1990—2008年期间,BDE209和∑_(9) BDEs浓度呈指数增长,这是由于多溴联苯醚混合物的广泛商业使用,区域家用电器以及电子产品的生产和消费的蓬勃发展造成的。在20世纪90年代至21世纪头10年,长江三角洲地区的BDE209和∑_(9) BDEs均呈上升趋势,这与多溴联苯醚污染源从发达国家向中国转移的历史时间段相吻合。地表径流和大气沉积导致S4和S5柱芯中BDE209的含量较高。表层沉积物中BDE209和∑_(9) BDEs浓度下降与多溴联苯醚混合物商业使用减少有关。
Gas chromatography-mass spectrometry and ^(210)Pb isotope dating were used in polybrominated diphenyl ethers(PBDES)in sedimentary column cores in the Yangtze River Delta.The vertical distribution characteristics of PBDEs were studied and the historical sedimentary records of PBDEs in the Yangtze River Delta were established.The results showed that the concentrations of BDE209 and∑_(9) BDEs increased exponentially from 1990 to 2008,which was caused by the wide commercial use of PBDEs mixture and the vigorous development of regional household appliances and electronic products.In 20 From the 1990s to the first decade of the 21st century,BDE209 and∑_(9) BDEs in the Yangtze River Delta showed an upward trend,which was consistent with the historical period of the transfer of polybrominated diphenyl ether pollution sources from developed countries to China.Surface runoff and atmospheric deposition result in higher content of BDE209 in S4 and S5 cores.The decrease of BDE209 and∑_(9) BDEs concentrations in surface sediments is related to the decrease of commercial use of polybrominated diphenyl ether mixtures.
作者
武林军
吉鹏
余进
笪春年
丁中原
WU Linjun;JI Peng;YU Jin;DA Chunnian;DING Zhongyuan(College of Biological Food&Environment,Hefei University,Hefei 230061;Key laboratory of Yangtze river water environment ministry,Shanghai 201804;Collaborative Innovation Center for Environmental Pollution Prevention&Ecological Restoration of Anhui Province,Hefei 230022;Anhui Hemei Environmental Protection Group Co.,Ltd,Hefei 230061,China)
出处
《合肥学院学报（综合版）》
2022年第5期48-54,共7页
Journal of Hefei University：Comprehensive ED
基金
长江水环境教育部重点实验室开放课题“长江(安徽段)沉积柱芯中典型持久性有机污染物的赋存状況及历史演化规律”(YRWEF202001)
安徽省级质量工程项目“校企合作实践教育基地”(2020sjjd107)资助。
关键词
长三角
多溴联苯醚
沉积物
沉积记录
Yangtze River Delta
polybrominated diphenyl ethers(PBDEs)
sediment
sediment records
