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Diffusive gradient in thin films(DGT): Technological progress and prospects
Received:November 07, 2018  
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KeyWord:diffusion gradient in thin films(DGT);device configurations;application materials;determination processes
Author NameAffiliationE-mail
LI Cai School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China 
 
REN Ming-yi Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China  
SHI Dan School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China 
 
WANG Yan Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
Nanjing EasySensor Environmental Technology Co., Ltd, Nanjing 210008, China 
 
YANG Li-yuan School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China  
DING Shi-ming Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China smding@niglas.ac.cn 
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Abstract:
      In recent years, the diffusion gradient in thin films (DGT) has been developed rapidly, making it one of the most commonly used passive sampling techniques. In this paper, the technological research progress of DGT is described in detail, including the configuration of DGT, the development of binding and diffusive phase materials, the pretreatment of environmental samples and the placement of DGT device, the treatment and determination of DGT samples, etc. In view of the shortcomings of the early development of this technology, the paper provides a system solution that is beneficial to the operation and function improvement of DGT. At the same time, the future development of the system is prospected.