@article{fdi:010069374,
  title = {{B}aseline seasonal investigation of nutrients and trace metals in surface waters and sediments along the {S}aigon {R}iver basin impacted by the megacity of {H}o {C}hi {M}inh ({V}ietnam)},
  author = {{S}trady, {E}milie and {V}u {B}ich {H}anh {D}ang and {N}{\'e}mery, {J}. and {G}u{\'e}dron, {S}t{\'e}phane and {Q}uoc {T}uc {D}inh and {D}enis, {H}. and {P}huoc {D}an {N}guyen},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {S}aigon {R}iver, {S}outhern {V}ietnam, crosses one of the most dynamic developing {M}egacity in {S}outheast {A}sia: {H}o {C}hi {M}inh {C}ity ({HCMC}). {T}he increased economic, industrial, and domestic developments may affect the environmental quality of water and halicutic resources. {I}n this study, we evaluated the seasonal (dry and wet seasons) biogeochemical state of the {S}aigon {R}iver during two snapshot campaigns conducted along the river basin upstream from {HCMC}; the {S}aigon {R}iver was characterized by slightly acidic (p{H} 5.7-7.7) and oxygen-depleted water (dissolved oxygen ({DO}), 0.36-5.18 mg l(-1)). {N}utrients ({N}-{NH}4 = 0.01-2.41, {N}-{NO}3 = 0.14-2.72, and {P}-{PO}4 = similar to 0-0.42 mg l(-1)), {DOC} (2.2-8.0 mg l(-1)), {POC}, and trace metal(oid) ({A}s, {C}d, {C}r, {C}u, {Z}n, and {H}g) concentrations were low showing a good quality of the upstream river. {I}n the urban center area, {DO} dropped to 0.03 mg l(-1) accompanied with a rise of nutrient concentrations (e.g., {N}-{NH}4, up to 17.7 mg l(-1)) likely originating from wastewater discharges. {T}race metal concentrations also rose sharply (e.g., {C}r and {H}g rose up to 10-fold higher) in both water and sediments but remained under the {W}orld {H}ealth {O}rganization ({WHO}) and {V}ietnamese concentration guidelines. {I}n the downstream estuarine area, the intrusion of marine waters diluted water flowing from {HCMC}, leading water quality to return close to the state observed upstream from {HCMC}. {I}n general, levels of nutrient and metal contaminations along the {S}aigon {R}iver during both seasons appear moderate regarding to {V}ietnamese and {WHO} guidelines although the urban area is highlighted as the major contributor for metal(oid) emissions. {F}inally, we showed that apart from wastewater and industrial discharges that affect the river quality, metal(oid) partitioning between solid and solution is controlled by the change in water geochemistry along the continuum during both seasons, such as {DO} (e.g., for {A}s and {C}r) and p{H} (e.g., for {P}b) which drives their sorption/dissolution dynamics.},
  keywords = {{T}ropical river ; {W}ater quality ; {O}rganic carbon ; {M}ercury ; {VIET} {NAM} ; {ZONE} {TROPICALE} ; {SAIGON} {COURS} {D}'{EAU}},
  booktitle = {},
  journal = {{E}nvironmental {S}cience and {P}ollution {R}esearch},
  volume = {24},
  numero = {4},
  pages = {3226--3243},
  ISSN = {0944-1344},
  year = {2017},
  DOI = {10.1007/s11356-016-7660-7},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069374},
}