Synthesis of hydrochloric acid solution for total mercury determination in natural waters

Type Article
Date 2011-01
Language English
Author(s) Patel-Sorrentino Nathalie1, Benaim Jean-Yves1, Cossa Daniel2, Lucas Yves1
Affiliation(s) 1 : Univ Sud Toulon Var, Equipe CAPTE, Lab PROTEE Proc Transferts & Echanges Environm, F-83957 La Garde, France.
2 : IFREMER, Ctr Mediterranee, F-83507 La Seyne Sur Mer, France.
Source Analytical And Bioanalytical Chemistry (1618-2642) (Springer Heidelberg), 2011-01 , Vol. 399 , N. 3 , P. 1389-1392
DOI 10.1007/s00216-010-4432-y
WOS© Times Cited 4
Keyword(s) Synthesis, Hydrochloric acid, Mercury determination, Green analytical chemistry
Abstract Total mercury (Hg-T) determination requires the addition of concentrated hydrochloric acid solution (>= 10 mol L-1 HCl) in relatively high amounts to preserve the samples and to prepare reagent solutions. A method for the preparation of concentrated HCl with HgT concentration of lower than 5 ng L-1 is described in this article. It is based on the well-known chemical reaction: 2 NH4Cl+H2SO4 ->(NH4)(2)SO4+2 HCl. This method is validated thanks to the US Environmental Protection Agency method 1631 and standard reference materials BCR-579 (mercury in coastal seawater).
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