1. Department of Chemistry, School of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
2. Department of Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama VI Rd, Bangkok 10400, Thailand
3. Analytical Sciences and National Doping Test Institute, Mahidol University, Rama VI Rd, Bangkok 10400, Thailand