1. Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand;
2. Helmholtz Zentrum München, German Research Center for Environmental Health, Research Unit Analytical BioGeoChemistry, Neuherberg, Germany;
3. Chair of Analytical Food Chemistry, Technische Universität München, Freising-Weihenstephan, Germany;
4. Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok, Thailand.