Details

Autor(en) / Beteiligte

• Dat, Nguyen Duy
• Nguyen, Van-Truc
• Vo, Thi-Dieu-Hien
• Bui, Xuan-Thanh
• Bui, Manh-Ha
• Nguyen, Ly Sy Phu
• Nguyen, Xuan-Cuong
• Tran, Anh Thi-Kim
• Nguyen, Thi-Tinh-Au
• Ju, Yun-Ru
• Huynh, Thi-Minh-Trang
• Nguyen, Duy-Hieu
• Bui, Hiep-Nghia
• Lin, Chitsan

Titel

Contamination, source attribution, and potential health risks of heavy metals in street dust of a metropolitan area in Southern Vietnam

Ist Teil von

• Environmental science and pollution research international, 2021-09, Vol.28 (36), p.50405-50419

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2021

Quelle

springer (창간호~2014)

Beschreibungen/Notizen

• This study investigates distribution, pollution indices, and potential risk assessment for human health and ecology of eight heavy metals in twenty-five street dust samples collected from metropolitan area—Ho Chi Minh City, Vietnam. Results showed that Zn was of the highest concentration (466.4 ± 236.5 mg/kg), followed by Mn (393.9 ± 93.2 mg/kg), Cu (153.7 ± 64.7 mg/kg), Cr (102.4 ± 50.5 mg/kg), Pb (49.6 ± 21.4 mg/kg), Ni (36.2 ± 15.4 mg/kg), Co (7.9 ± 1.9 mg/kg), and Cd (0.5 ± 0.5 mg/kg). The principal component analysis revealed that three sources of heavy metals measured in street dust include vehicular activities (32.38%), mixed source of vehicular and residential activities (26.72%), and mixture of industrial and natural sources (20.23%). The geo-accumulation index values showed levels of non-pollution to moderately pollution for Mn and Co; moderately pollution for Ni; moderately to strongly pollution for Cd, Cr, and Pb; and strongly pollution for Cu and Zn. The potential ecological risk values of all sampling sites were close to the high-risk category. Zn (28.9%), Cu (25.4%), and Mn (24.4%) dominantly contributed to the ecological risk. For non-carcinogenic risk, the hazard quotient values for both children and adults were within a safety level. For carcinogenic risk, the TCR Children was about 3 times higher than TCR Adults , but still within a tolerable limit (1 × 10 −6 to 1 × 10 −4 ) of cancer risk. Cr was a major contribution to potential risks in humans. Such studies on heavy metal in street dust are crucial but are still limited in Vietnam/or metropolitan area in Southeast Asia. Therefore, this study can fill the information gap about heavy metal contaminated street dust in a metropolitan area of Vietnam.