Email: haihongchen@sina.cn. I graduated from China university of geosciences (Wuhan), and I have been working in the state key laboratory of geological processes and mineral resources since I got the bachelor degree and master degree in mineral survey and exploration in 2006. I obtained my PhD in geochemistry in 2018. At present, I am mainly responsible for the daily operation management and sample testing services of ICP-MS and super clean laboratory. My Research interests: 1) to set up the pretreatment method of geological samples, reagents purification and the development of experimental equipment; 2) development the method of direct and nondestructive in-situ analyses for large samples. During my degree courses and work, I have obtained several invention patents and published several academic papers as the first author and co-author.