Determination of copper, iron, manganese and zinc in river and estuarine water by atom trapping-flame atomic absorption spectrometry |
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Authors: | Henryk Matusiewicz Ralph Sturgeon Van Luong Kathy Moffatt |
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Affiliation: | (1) Department of Analytical Chemistry, Politechnika Poznaska, PL-60-965 Pozna, Poland;(2) Institute for Environmental Chemistry, National Research Council of Canada, K1A 0R6 Ottawa, Canada;(3) Varian Canada Inc., K2C 3V4 Ottawa, Canada |
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Abstract: | Summary A simple method is described for the atomic absorption (AA) determination of Cu, Fe, Mn and Zn in river and estuarine water using two atom trapping techniques: a water-cooled dual silica tube and a commercially available double-slotted quartz tube mounted in an air-acetylene flame. Rapid, accurate analyses can be achieved using continuous aspiration. The concentration detection limits were 0.9, 1.5 and 0.3 ng ml–1 for Cu, Mn and Zn, respectively, using a 2 min in situ preconcentration time with the dual silica tube atom trap and 4.0, 12.1, 2.0 and 1.2 ng ml–1 for Cu, Fe, Mn and Zn, respectively, using the double-slotted quartz tube. The relative standard deviations are of the order of 2.9–6.9% for both techniques. The accuracy was assessed by analyses of NRCC SLRS-2 riverine and SLEW-1 estuarine water reference materials. Basic performance characteristics are also given for Ag, Bi, Cd, In, Pb and Tl using the dual silica tube atom trap. |
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