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

نویسندگان

  • Nathalie Patel-Sorrentino
  • Jean-Yves Benaim
  • Daniel Cossa
  • Yves Lucas
چکیده

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 Hg(T) concentration of lower than 5 ng L(-1) is described in this article. It is based on the well-known chemical reaction: 2 NH(4)Cl + H(2)SO(4) → (NH(4))(2)SO(4) + 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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عنوان ژورنال:
  • Analytical and bioanalytical chemistry

دوره 399 3  شماره 

صفحات  -

تاریخ انتشار 2011