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Cr(III) and Cr(VI) speciation measurements in environmental reference materials |
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| Authors: | Kristien Vercoutere Rita Cornelis Steen Dyg Louis Mees Jytte Molin Christensen Kirsten Byrialsen Benny Aaen Philippe Quevauviller |
| Institution: | (1) Laboratory of Analytical Chemistry, University of Gent, Proeftuinstraat 86, B-9000 Gent, Belgium;(2) National Institute of Occupational Health, Copenhagen, Denmark;(3) European Commission, Standards, Measurements and Testing Programme (formerly BCR), Brussels, Belgium |
| Abstract: | The production of reference materials for quality control of Cr(III) and Cr(VI) speciation in environmental samples is described. It concerns in the first place two lyophilized solutions containing Cr(III) and Cr(VI) at different concentrations, respectively representative for drinking water and filter leaching solutions, and in the second place filters loaded with welding dust. Twenty-four laboratories with experience in the field participated in an intercomparison exercise organized to validate the suitability of the reference materials and to gauge the state-of-the-art of Cr speciation throughout Europe. The outcome of this exercise is discussed. |
| Keywords: | chromium speciation certified reference materials drinking water welding dust |
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