Effect of aging on the bioavailability and fractionation of arsenic in soils derived from five parent materials in a red soil region of Southern China
作者: Yanan WangXibai ZengYahai LuShiming SuLingyu BaiLianfang LiCuixia Wu
作者单位: 1Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Ministry of Agriculture of China, Beijing 100081, China
2College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, China
刊名: Environmental Pollution, 2015, Vol.207 , pp.79-87
来源数据库: Elsevier Journal
DOI: 10.1016/j.envpol.2015.08.033
关键词: Arsenic (As)Aging processAging mechanismChemical kinetic equations
英文摘要: Abstract(#br)The effects of aging time and soil parent materials on the bioavailability and fractionations of arsenic (As) in five red soils were studied. The results indicated that As bioavailability in all soils decreased during aging, especially with a sharp decline occurring in the first 30 days. After aging for 360 days, the highest available As concentration, which accounted for 12.3% of the total, was observed in soils derived from purple sandy shale. While 2.67% was the lowest proportion of the available As in soils derived from quaternary red clay. Furthermore, the best fit of the available As changing with aging time was obtained using the pseudo-second-order model ( R 2 = 0.939–0.998, P < 0.05). Notably, Al oxides played a more crucial role ( R 2 = 0.89, P <0.05) than did Fe...
全文获取路径: Elsevier  (合作)
影响因子:3.73 (2012)

  • aging 老化
  • fractionation 分级
  • arsenic 
  • derived 导生的
  • region 地域
  • China 中国
  • parent 母体
  • materials 工业三废