Dynamic arsenic aging processes and their mechanisms in nine types of Chinese soils
作者: Yanan WangXibai ZengYahai LuLingyu BaiShiming SuCuixia 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 Urban and Environmental Sciences, Peking University, Beijing, China
刊名: Chemosphere, 2017, Vol.187 , pp.404-412
来源数据库: Elsevier Journal
DOI: 10.1016/j.chemosphere.2017.08.086
关键词: Arsenic (As)Soil typesAging mechanismApproximate aging equilibrium timeKinetic equation fitting
原始语种摘要: Abstract(#br)Although specific soil properties controlling the arsenic (As) aging process have been studied extensively, few investigations have attempted to determine how soil types influence As bioavailability and fractionations in soils. Nine types of soil were selected from typical grain producing areas in China, and the bioavailability and fractionations of As during aging were measured. Results showed that available As in all soils rapidly decreased in the first 30 days and slowly declined thereafter. In spiked soils, As easily became less available and less toxic in low pH soils compared to high pH soils, demonstrating the importance of soil pH on As availability. Results from fitting kinetic equations revealed that the pseudo-second-order model described the As aging processes...
全文获取路径: Elsevier  (合作)
影响因子:3.137 (2012)

  • aging 老化
  • arsenic 
  • their 他们的
  • Chinese 汉语