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DGT: A promising technology for in-situ measurement of metal speciation in the environment
- Gao, Li, Gao, Bo, Xu, Dongyu, Liu, Linghua
- The Science of the total environment 2020 v.715 pp. 136810
- bioavailability, films (materials), toxicity
- Toxicity, bioavailability, and mobility of a metal depend on its speciation rather than its total concentration. In this discussion, we emphasize the need for field-based metal speciation analysis methods, given the flaws of traditional techniques. We express a science-based opinion that the diffusive gradients in thin-films (DGT) is a promising and powerful technique for performing in-situ measurement of metal species or speciation in different environmental samples. Several limitations and challenges in further application of DGT are also highlighted in this discussion.