1. College of Chemistry, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, China
2. Center for Advanced Analysis & Gene Sequencing, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, China
3. Zhengzhou Tobacco Research Institute of China National Tobacco Company, 2 Fengyang Street, Zhengzhou 450001, China