Studying airborne trace elements in featured areas in Red River Delta and South Central Vietnam using moss biomonitoring technique and neutron activation analysis

Forty-five moss samples were collected at the end of the 2019 rainy season in Hanoi capital and some other cities in Red River Delta and the south central region in Vietnam. Twenty-nine elements were determined in the moss samples by neutron activation analysis at the reactor IBR-2 in the Joint Institute for Nuclear Research in Dubna, Russia. Factor Analysis allowed the extraction of five main factors that characterized five expected pollution sources and estimation of the factor probability at each sampling site.