. 2020 Nov 2;8:579828. doi: 10.3389/fchem.2020.579828
Copyright © 2020 Hu, Liu, Wu, Li, Liu, Ding, Han, Deng, Hu and Zhong.
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Figure 3.
Concentration gradient test results with CoCl2 and NiCl2 water solutions using ICP–OES.