title: Distribution and depth profiles of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and polychlorinated biphenyls in sediment collected from offshore waters of Central Vietnam.
abstract: Concentrations of PCBs and OCPs were measured in 35 surface sediment samples collected from offshore waters of Central Vietnam. The mean concentrations of PCBs, HCHs, and DDTs in surface sediments were 86.5, 37.0, and 44.5pgg(-1), respectively. Additionally, nine PCDDs, eleven PCDFs, and twelve dl-PCBs were also examined in 19 sediment core samples collected from five locations. Concentration of PCDDs, PCDFs, and dl-PCBs ranged from 200 to 460, 0.39 to 2.9, and 1.6 to 22pgg(-1), respectively. OCDD was detected at the highest concentration, ranged from 100 to 300pgg(-1). Generally, the concentrations of PCDD/Fs at shallower depths were higher, meanwhile the depth profiles of dl-PCBs in sediment cores were different than the depth profiles of PCDD/Fs. The results suggest that the pollution of PCBs might be from many different sources leading to the variation between depths.
authors.affiliation: Faculty of Chemistry, VNU University of Science, Vietnam National University, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Viet Nam.
authors.forename: Tran Manh
authors.initials: TM
authors.lastname: Tri
authors.affiliation: Faculty of Chemistry, VNU University of Science, Vietnam National University, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Viet Nam.
authors.forename: Hoang Quoc
authors.initials: HQ
authors.lastname: Anh
authors.affiliation: Faculty of Environment, Hanoi University of Natural Resources and Environment, Cau Dien, Tu Liem, Hanoi, Viet Nam.
authors.forename: Trinh Thi
authors.initials: TT
authors.lastname: Tham
authors.affiliation: Faculty of Geology, VNU University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Viet Nam.
authors.forename: Tran
authors.initials: T
authors.lastname: Van Quy
authors.affiliation: Institute for Nuclear Science and Technology, 179 Hoang Quoc Viet, Hanoi, Viet Nam.
authors.forename: Nguyen Quang
authors.initials: NQ
authors.lastname: Long
authors.affiliation: Faculty of Chemistry, VNU University of Science, Vietnam National University, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Viet Nam.
authors.forename: Dao Thi
authors.initials: DT
authors.lastname: Nhung
authors.affiliation: Hiyoshi Corporation, 908 Kitanosho, Omihachiman, Shiga 523-8555, Japan.
authors.forename: Masafumi
authors.initials: M
authors.lastname: Nakamura
authors.affiliation: Hiyoshi Corporation, 908 Kitanosho, Omihachiman, Shiga 523-8555, Japan.
authors.forename: Masayo
authors.initials: M
authors.lastname: Nishida
authors.affiliation: Research Organization for University-Community Collaborations, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Maeda
authors.affiliation: Faculty of Chemistry, VNU University of Science, Vietnam National University, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Viet Nam.
authors.forename: Luu
authors.initials: L
authors.lastname: Van Boi
authors.affiliation: Faculty of Chemistry, VNU University of Science, Vietnam National University, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Viet Nam. Electronic address: tubinhminh@gmail.com.
authors.forename: Tu Binh
authors.initials: TB
authors.lastname: Minh
mesh_terms: D000072338:Dibenzofurans, Polychlorinated / Q000032:analysis*; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D000072317:Polychlorinated Dibenzodioxins / Q000032:analysis*; D012623:Seawater / Q000737:chemistry*; D014744:Vietnam; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls
keywords: OCPs; PCBs; PCDD/Fs; Sediment cores; Vietnam; dl-PCBs