Affiliation: | 1. College of Chemistry and Life Sciences, Qinghai University for Nationalities, 810007, Xining, P. R. China 2. State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and College of Chemistry and Chemical Engineering, Lanzhou University, 730000, Lanzhou, P. R. China 3. Qinghai Normal University, College of Biology and Geography Science, Xining, China
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