1. College of Mathematics and Computer Science, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Lin’an, Hangzhou 311300, China
2. Radiation Monitoring Technical Center of Ministry of Ecology and Environment, State Environmental Protection Key Laboratory of Radiation Monitoring, Key Laboratory of Radiation Monitoring of Zhejiang Province, Hangzhou 310012, China
3. Zhejiang GuoFu Environmental Technology Co., Ltd, Hangzhou 311300, China