Related content Peer-reviewed publication • 2019 Soil and sediment contamination by unsubstituted and methylated polycyclic aromatic hydrocarbons in an informal e-waste recycling area, northern Vietnam: Occurrence, source apportionment, and risk assessment Peer-reviewed publication • 2021 Utilization of biogas as an untapped renewable energy source in Vietnam Peer-reviewed publication • 2022 Impact of biomass burning sources during the high season on PM2.5 pollution observed at sampling sites in Hanoi, Vietnam and Chiang Rai, Thailand