Field sampling, preconcentration and determination of mercury species in river waters

  • Blanco R
  • Villanueva M
  • Urı́a J
 et al. 
  • 1

    Readers

    Mendeley users who have this article in their library.
  • N/A

    Citations

    Citations of this article.

Abstract

A simple field sampling strategy for determination and speciation of inorganic mercury and methylmercury in river waters is described. River water samples are collected in situ by passing them with a pump through a minicolumn packed with C18 modified with sodium diethyldithiocarbamate. This packing is able to isolate and retain the desired mercury species. Minicolumns loaded with the analytes are then returned to the laboratory where mercury species are eluted with 500 μl of 5% thiourea in 0.5% HCl. A detailed study of the construction of these minicolumns and the stability of the mercury species retained in the packing is presented. The separation of the two mercury species was carried out by liquid chromatography using a cysteine solution as mobile phase and final detection was accomplished by inductively coupled plasma mass spectrometry. Between-column relative standard deviations of 12% at the 200 ng l−1 Hg level and limits of detection of 5.2 ng l−1 for inorganic mercury and 5.6 ng l−1 for methylmercury are obtained. The method has been applied to mercury speciation in clean river waters of the Asturias region of Spain.

Author-supplied keywords

  • Cysteine mobile phase
  • Inductively coupled plasma mass spectrometry
  • Liquid chromatography
  • Mercury speciation
  • Minicolumn field sampling

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • Roberto Martinez Blanco

  • Margarita Tagle Villanueva

  • Jose Enrique Sánchez Urı́a

  • Alfredo Sanz-Medel

  • Jose Enrique Sánchez Uria

  • Alfredo Sanz-Medel

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free