Orachorn Chimjan

Human health risk assessment of PM 2.5 -bound heavy metals during a haze season in a semi‑urban agricultural area of Northern Thailand

This study assessed PM2.5-bound heavy metals (Cd, Pb, Cr, Cu, and Fe) and associated human health risks at a semi-urban-agricultural site in Phitsanulok, lower northern Thailand, during the 2024–2025 haze season. Enrichment factors (EF), geoaccumulation index (Igeo), and US EPA h...