FN Archimer Export Format
PT J
TI Measurement and modeling of mercury complexation by dissolved organic matter isolates from freshwater and effluents of a major wastewater treatment plant
BT 
AF MURESAN, Bogdan
   PERNET-COUDRIER, Benoit
   COSSA, Daniel
   VARRAULT, Gilles
AS 1:1;2:1;3:2;4:1;
FF 1:;2:;3:PDG-RBE-BE-LBCM;4:;
C1 Univ Paris Est Creteil, UMR MA 102, LEESU, AgroParisTech, F-94010 Creteil, France.
   IFREMER, Ctr Mediterranee, Lab Biogeochim Contaminants Metall, F-83507 La Seyne Sur Mer, France.
C2 UNIV UPEC, FRANCE
   IFREMER, FRANCE
SI TOULON
SE PDG-RBE-BE-LBCM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.176
TC 15
UR https://archimer.ifremer.fr/doc/00060/17108/14717.pdf
LA English
DT Article
AB Dissolved organic matter (DOM) samples were obtained from a low-density urbanized area located upstream of Paris (along the Marne River, France) and from the treated effluents at the Paris main wastewater treatment plant. These samples were then fractionated according to their hydrophobicity. DOM fractions consisted of nanomolar to sub-micromolar fresh organic substances with extremely strong Hg-complexing ligands. The conditional stability constants (i.e. K(HgL)'; pH similar to 6.8, I(NaCl) = 0.5 M, T = 25 degrees C) of the Hg-DOM complexes formed were greater than 10(24) M (1), for the reaction Hg(2+) + L = HgL (with L as ligand). For upstream of Paris, thermodynamic calculations indicated that the vast majority of Hg-DOM was associated with hydrophobic DOM. In contrast, in the Paris main wastewater treatment plant effluents, Hg-DOM was mainly bound to hydrophilic DOM. Simple dilution calculations highlighted that due to the large DOM loading of urban discharges, the hydrophilic urban DOM ligands may commonly dominate Hg-DOM speciation in the downstream Seine River, except under extreme dilution (i.e. high water episodes or floods). (C) 2011 Elsevier Ltd. All rights reserved.
PY 2011
PD DEC
SO Applied Geochemistry
SN 0883-2927
PU Pergamon-elsevier Science Ltd
VL 26
IS 12
UT 000297915500011
BP 2057
EP 2063
DI 10.1016/j.apgeochem.2011.07.003
ID 17108
ER

EF