Emission factors of metals bound with PM2.5 and ashes from biomass burning simulated in an open-system combustion chamber for estimation of open burning emissions

Mohammad Zahir Akbari, Duangduean Thepnuan, Wan Wiriya, Rungruang Janta, Praphatsorn Punsompong, Phonpat Hemwan, Arisara Charoenpanyanet, Somporn Chantara