Journal
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
Volume 52, Issue 17, Pages 3035-3079Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10643389.2021.1900765
Keywords
Biomimetic application; chemical imaging; contaminants; in situ measurement; nutrients
Categories
Funding
- National Natural Science Foundation of China [21637002, 41807353]
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs/Tianjin Key Laboratory of AgroEnvironment and Agro-Product Safety [19cdhj-1]
- State Key Laboratory of Pollution Control and Resource Reuse [PCRRF19016]
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The Diffusive Gradients in Thin-films technique (DGT) has gained increasing popularity in soil research since 1998, attracting attention due to its ease of use and versatility in applications. It is effective in studying the behaviors of nutrients, trace elements, and polar organic compounds in soils, making it a valuable tool for various aspects of soil research.
Soil plays an important role in controlling the biogeochemical cycling of nutrients and contaminants in the environment. Reliable analytical techniques are critical to better understand their transformation in soils. Diffusive Gradients in Thin-films technique (DGT) is one of such techniques, which has become increasingly popular in soil research since 1998. Undeniably, DGT attracts increasing attentions from multidisciplinary researchers worldwide. This is mainly due to its inherent merits, including ease of use, in situ measurement, and biomimetic applications. Further, four important aspects of DGT applications in soil research were summarized. They include: 1) chemical speciation, 2) bioavailability measurement, 3) desorption kinetic modeling, and 4) interfacial process mapping of nutrients and contaminants, with main focus on the progresses achieved during the past five years. In short, DGT is effective in studying the biochemical behaviors of nutrients (e.g., phosphate and nitrate), trace elements (e.g., Cd, Ni, Zn, Cu, Pb, and As), and polar organic compounds (e.g., antibiotics, pesticides, and bisphenols) in soils. Toward the end, we proposed several aspects of applying DGT as a versatile tool in soil research.
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