Sedimentological, biogeochemical and chemical data in bed sediments from the Saigon River and Can Gio Mangrove, Vietnam, 2016

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STRADY, Emilie; BABUT, Marc; NEMERY, Julien; MOURIER, Brice; NONCENT, David; DESMET, Marc; NGUYEN, T.N. Tuyet; TRAN, Anh Tu; NGUYEN, Truong An; AIME, Joanne; GRATIOT, Nicolas; DENIS, Hervé, 2020, "Sedimentological, biogeochemical and chemical data in bed sediments from the Saigon River and Can Gio Mangrove, Vietnam, 2016", https://doi.org/10.23708/3KJR0C, DataSuds, V1, UNF:6:raRlaRAkhW3HhUIRD09oyA== [fileUNF]
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Description
  • In January 2016, 17 bed sediments were sampled in the Saigon River and its urban canals. Analyses of grain size distribution, organic matter content, nitrogen content, phosphorus content (TPP, PIP, POP), carbon content (TC, POC, PIC), major elements and trace metals (Mg, K, Ca, V, Cr, Mn, Co, Ni, Cu, Zn, As, Mo, Ag, Cd, Pb, U, Fe, Al) and organic coumpounds including polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), some insecticides, as well as polybrominated diphenyl ethers (PBDEs) and some perfluoroalkyl substances (PFASs) were performed.

  • In November 2016, 17 bed sediments were sampled in the Can Gio Mangrove biosphere. Analyses of grain size distribution, organic matter content, nitrogen content, phosphorus content (TPP, PIP, POP), carbon content (TC, POC, PIC) and major elements and trace metals (Mg, K, Ca, V, Cr, Mn, Co, Ni, Cu, Zn, As, Mo, Ag, Cd, Pb, U, Fe, Al) were performed.
    • Subject Earth and Environmental Sciences
    Keyword trace metal, PCB, PAH, PFAs, PBDEs, insecticide, tropical environment
    Related Publication Babut M., Mourier B., Desmet M., Simonnet-Laprade C., Labadie P., Budzinski H., De Alencastro L.F., Tu A.T., Strady E., Gratiot N., 2019. Where has the pollution gone? A survey of organic contaminants in Ho-Chi-Minh City / Saigon River (Vietnam) bed sediments. Chemosphere, 217, 261-269 doi: 10.1016/j.chemosphere.2018.11.008
    Notes A wide range of persistent organic chemicals, including polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), some insecticides, as well as polybrominated diphenyl ethers (PBDEs) and some perfluoroalkyl substances (PFASs) were analyzed in 17 bed sediments collected along the Saigon River and at adjacent canal mouths from upstream to downstream in Ho Chi Minh City (Vietnam).

    Concentrations were rather low for PAHs, as well as for legacy PCBs and dichloro-diphenyl-trichlorethane and metabolites (DDTs), or below detection limits for several PFASs and all PBDEs measured. Several insecticides (chlorpyrifos-ethyl, and the pyrethroids cypermethrin and l-cyhalothrin) displayed rather high concentrations at a few sites within the city. There was no distinct upstream - downstream trend for PAHs, (DDTs) or PCBs. Although adjacent canal sediments tended to be more contaminated than Saigon River sediments, the differences were not significant. Emissions are almost certainly substantial for PAHs, and probably also for other contaminants such as PBDEs and some PFASs. During the dry season, contaminants are presumably stored in the city, either in canals or on urban surfaces. Heavy rainfall during the monsoon period carries away contaminated particle flows into the canals and then the Saigon River. The strong tidal influence in the river channel hinders the accumulation of contaminated particles. Contaminated deposits should accordingly be investigated further downstream in depositional environments, such as the mangrove.
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    135 Variables, 17 Observations UNF:6:jGOpIxWtw/cxBn7rCzGxWg==
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    SG-DN_2016-11_bedsediment_sedimentological_chemical_analyses.tab
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    34 Variables, 17 Observations UNF:6:XAUVvjpEecgLn+Klwn+u1g==
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