Secondary School Students' Mental Health, Grit, Self-Esteem, and Smartphone Addiction of International Conference for Public Health, Environment, and Education for Sustainable Development Goals and Lifelong Learning

International Conference for Public Health, Environment,and Education for Sustainable Development Goals andLifelong LearningSeptember 28 - 29, 2023Faculty of Public Health, Mahidol UniversityBangkok, ThailandELECTRONICABSTRACT BOOK Day 1September 28, 2023Keynote, Symposium, Invited Speaker0 2 0 3Keynote#19:00-9:30Unveiling the mystery of Bangkok’s air: VOCs & SOA formation inthe urban jungleSarawut ThepanondhMahidol University, ThailandThis intensive study conducted in the Bangkok Metropolitan Region (BMR), Thailand, focusedon the formation potential and source contribution of Secondary Organic Aerosols (SOA) fromVolatile Organic Compounds (VOCs). Direct measurements of ambient VOC concentrationswere comprehensively evaluated to identify abundant VOC species and their respectiveemission sources contributing to SOA, using the Positive Matrix Factorization (PMF) model. Thestudy revealed that the largest group of VOC concentrations in the BMR, across various landuse areas (general, roadside, and industrial), was Organic Volatile Organic Compounds(OVOCs), accounting for 49.18% to 57.36% of total VOCs. Aromatics were the major VOCgroup contributing to SOA, making up 97.80% to 98.81%, wi