【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。更多还原

【Abstract】 In this paper,a new in-situ passive sampling technique,the diffusive gradients in thin-films(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.更多还原