Chifflet Sandrine auteur aut IRD Amouroux D. auteur aut IRD Berail S. auteur aut IRD Barre J. auteur aut IRD Van T. C. auteur aut IRD Baltrons O. auteur aut IRD Brune J. auteur aut IRD Dufour A. auteur aut IRD Guinot B. auteur aut IRD Mari Xavier auteur aut IRD text journalArticle eng text/pdf born digital access Southeast Asia is a hotspot of anthropogenic emissions where episodes of recurrent and prolonged atmospheric pollution can lead to the formation of large haze events, giving rise to wide plumes which spread over adjacent oceans and neighbouring countries. Trace metal concentrations and Pb isotopic ratios in atmospheric particulate matter <10m (PM10) were used to track the origins and the transport pathways of atmospheric pollutants. This approach was used for fortnightly PM10 collections over a complete annual cycle in Haiphong, northern Vietnam. Distinct seasonal patterns were observed for the trace metal concentration in PM10, with a maximum during the Northeast (NE) monsoon and a minimum during the Southeast (SE) monsoon. Some elements (As, Cd, Mn) were found in excess according to the World Health Organization guidelines. Coal combustion was highlighted with enrichment factors of As, Cd, Se, and Sb, but these inputs were outdistanced by other anthropogenic activities. V/Ni and Cu/Sb ratios were found to be markers of oil combustion, while Pb/Cd and Zn/Pb ratios were found to be markers of industrial activities. Pb isotopic composition in PM10 revealed an important contribution of soil dusts (45-60%). In PM10, the Pb fraction due to oil combustion was correlated with dominant airflow pathways (31% during the north-easterlies and 20% during the south-easterlies), and the Pb fraction resulting from industrial emissions was stable (around 28%) throughout the year. During the SE monsoon, Pb inputs were mainly attributed to resuspension of local soil dusts (about 90%), and during the NE monsoon, the increase of Pb inPM(10) was due to the mixing of local and regional inputs. specialized Air pollution Haiphong Enrichment factors Chemical balances Lead isotopes Anthropogenic sources Local and regional inputs VIET NAM HAIPHONG 021 020 102 25 26 26653-26668 2018 0944-1344 https://www.documentation.ird.fr/hor/fdi:010074018 10.1007/s11356-018-2722-7 0944-1344 [F B010074018] https://www.documentation.ird.fr/hor/fdi:010074018 https://www.documentation.ird.fr/intranet/publi/2018/09/010074018.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2018-10-03 2023-07-11 fdi:010074018 fre