1. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2. School of Chemistry and Materials Science, Guizhou Normal University, Guiyang, Guizhou 550001, China
3. Guizhou Province Product Quality Supervision and Inspection Institute, Guiyang, Guizhou, 550004, China