Distributions of arsenic species in sediment-water interface of Hukou, in Poyang Lake, China
Arsenic species corresponding to arsenite, arsenate, and organic arsenic were measured in the porewaters collected at Hukou, where through a 1km long channel the water in Poyang Lake is emptied into the Yangtze River. Distributions of dissolved arsenic species of arsenite As (Ⅲ, arsenate As (Ⅴ) and organic arsenic (As-org) were obtained in porewaters. The sedimentary profiles of total arsenic, arsenic species bound to Fe-Mn oxyhydroxides and to organic matters were also determined in different extractable fractions. Results indicated that in summer season the concentrations of total dissolved arsenic in sediments were significantly different with that in winter. Seasonal profiles of dissolved arsenic suggested downward and upward diffusion.
Geochemistry arsenic species sediment-water interface aquatic environment
Meng-xia Liao Tian-long Deng
College of Chemistry and Chemical Engineering, Chengdu University of Technology, 610059 Chengdu, Chi College of Chemistry and Chemical Engineering, Chengdu University of Technology, 610059 Chengdu, Chi
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
846-847
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）