1. Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou510632, China
2. Guangzhou Hexin Instrument Co., Ltd., Guangzhou510530, China
3. Guangdong MS Institute of Scientific Instrument Innovation, Guangzhou510530, China
4. School of Environment and Energy, South China University of Technology, Guangzhou510006, China