1. Yunnan Tobacco Quality Supervision and Test Station Kunming 650106 P. R. China
2. Key Laboratory of Medicinal Chemistry for Natural Resource of Yunnan University Ministry of Education Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province School of Chemical Science and Technology Yunnan University Kunming 650091 P. R. China
3. Molecular Science and Biomedicine Laboratory (MBL) State Key Laboratory of Chemo/Bio–Sensing and Chemometrics College of Chemistry and Chemical Engineering Aptamer Engineering Center of Hunan Province Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University Changsha 410082 P. R. China
4. Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental Science Yunnan University Kunming 650091 P. R. China