#Micro-beam Synchrotron X-ray Fluorescence (µ-SXRF)
Siwatt Pongpiachan* School of Social and Environmental Development, National Institute of Development Administration (NIDA); Kanjana Thumanu;, Waraporn Tanthanuch; Danai Tipmanee; Panatda Kanchai; Klaus Schwarzer and Somchai Tancharakorn
