薄膜梯度扩散技术在重金属形态分析中的应用  

Application of Diffusive Gradients in Thin Films to the Analysis of Heavy Metal Speciation

作　　者：陈宏[1] 刘玉静[1] 包德才[1] 刘连利[1] 

机构地区：[1]渤海大学化学化工与食品安全学院,锦州121013

出　　处：《化学通报》2012年第12期1109-1113,共5页Chemistry

基　　金："十二五"国家科技支撑计划项目(2012BAD29B06);辽宁省科学事业公益研究基金项目(2012003001);辽宁省食品安全重点实验室开放课题(LNSAKF2011038)资助

摘　　要：介绍了一种新型原位被动采样技术——薄膜梯度扩散(DGT)技术。重点阐述了DGT技术在分析水、沉积物、土壤环境中重金属有效态和水中重金属特定形态方面的应用,展望了DGT技术在重金属形态分析中的发展趋势,提出了离子选择性薄膜梯度扩散(ISDGT)技术及建立路径。In this paper, a new in-situ passive sampling technique, the diffusive gradients in thin-fihns （DGT） technique was introduced. The determination of heavy metal speciation by DGT, including the determination of labile speciation of heavy metal in waters, sediments and soils, and the determination of specific species of heavy metal in waters were focused on. The prospects of measuring heavy metal speciation by DGT were evaluated. The concept of ion selected diffusive gradients in thin-films （ISDGT） technique and the approach to establishing ISDGT were also proposed.

关 键 词：薄膜扩散梯度 重金属 形态 有效态 自由金属离子 

分 类 号：O651[理学—分析化学]