1. Key Laboratory of Geochemical Exploration, Institute of Geophysical and Geochemical ExplorationCAGS Langfang China
2. Global Sampling and Research CenterUNESCO International Centre on Global‐scale Geochemistry (ICGG) Langfang China
3. State Key Laboratory of Geological Processes and Mineral ResourcesChina University of Geosciences Beijing China
4. Yunnan Geological Survey Kunming China
5. School of the EnvironmentWashington State University Pullman Washington USA
6. College of Eco‐environmental EngineeringGuizhou Minzu University Guiyang China