CHARACTERIZATION OF ORGANIC HALOGENS IN PRECIPITATION IN BEIJING BY HYBRID NAA

摘要：

The precipitation samples, collected from Beijing from 2006.5 to 2007.12, were studied by a hybrid neutron activation analysis (NAA) method for the concentrations and distribution of persistent extractable organic halogens (EPOX). The average concentrations of EPOCl, EPOBr and EPOI were 102, 0.18, and 0.31 μg/L, respectively. Most of EPOCl measured in the precipitation were unknown. Significant correlations between the logarithms of the concentrations of EPOCl and EPOBr (r=0.65, p<0.0001) or EPOI (r=0.72, p<0.0001) and between the concentrations of EPOBr and EPOI (r=0.79, p<0.0001) were observed, which suggested that EPOCl, EPOBr and EPOI in precipitation in Beijing might mainly come from the same sources. There were no clear seasonal trends for the concentrations of EPOX observed.

作者: Xu D D Ma L L Chen Y Chai Z F Xu G F Li S Z Shi W Q

作者单位: Key Lab for Nuclear Analytical Techniques,Institute of High Energy Physics,Chinese Academy Sciences,Beijing 100049,China

会议类型: 国际会议

会议名称: 29th International Symposium on Halogenated Persistent Organic Pollutants(第29届国际持久性有机污染物研讨会)(2009国际二噁英大会)

会议地点: 北京

会议语种:英文

页码: 1-4

在线出版日期: 2009-08-24（万方平台首次上网日期，不代表论文的发表时间）