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J.Health Sci., 53(3), 291-301, 2007
Distribution of Persistent Organic Pollutants and Polycyclic Aromatic Hydrocarbons in Sediment Samples from Vietnam
Masao Kishida,*, a Kiyoshi Imamura,a
Yasuaki Maeda,b Tran Thi Ngoc Lan,c
Nguyen Thi Phuong Thao,dand Pham Hung Viete
aEnvironmental Pollution Control Center, Osaka Prefectural Government, 1-3-62 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan,
bGraduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan,
cCollege of Natural Science, Vietnam National University of Ho Chi Minh City, 227 Nguyen Van Cu Str., Dist.5, Ho Chi Minh City, Vietnam,
dNational Center for Natural Science and Technology, Hoang Quoc Viet Str., Hghia Do, Cau Giay, Hanoi, Vietnam, and
eCollege of Science, Vietnam National University of Hanoi, T3 Building, 333 Nguyen Trai Str., Thanh Xuan Dist., Hanoi, Vietnam
The presence of eight kinds of persistent organic pollutants (POPs) such as DDT and its metabolites (DDTs), hexachlorocyclohexanes (HCHs), chlordane compounds (CHLs), drin compounds (Drins), heptachlor, hexachlorobenzene (HCB), heptachlor-epoxide, polychlorinated biphenyls (PCBs) and sixty-four polycyclic aromatic hydrocarbon compounds (PAHs) was identified using high resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS) to investigate their distribution in surface sediment from Hanoi, Hue, and Ho Chi Minh in Vietnam. A survey of sediment samples from Osaka was conducted for comparison. The concentrations of ΣDDTs, ΣCHLs, ΣPCBs and ΣPAHs in Vietnam were 0.19-140, N.D.-9.0, 0.11-110, and 30-5500 ng/gdry, respectively. Concentrations of these compounds in urban areas were higher than those in other areas. In addition, the ΣDDT concentrations in Vietnamese urban areas were higher than those in Osaka. These results suggest that most DDTs would be used as insecticides for the purpose of health services rather than as agricultural chemicals. PAH pollution in urban areas and suburbs is caused mainly by runoff of petrol, whereas in rural areas, the combustion of fossil fuels and biomass is the major pollutant source.
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