Determination of lead in environmental reference materials (plant materials) by slurry-ETA-AAS |
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| Authors: | Zongqiang Yu Carlo Vandecasteele Bernard Desmet Richard Dams |
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| Affiliation: | (1) Laboratory of Analytical Chemistry, Ghent University, I.N.W., Proeftuinstraat 86, B-9000 Gent, Belgium;(2) National Fund for Scientific Research, Belgium |
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| Abstract: | Slurry-ETA-AAS is used to determine lead in plant materials. The stability of the slurry was studied and it was shown that, when NH4H2PO4 modifier is added, the shape of the time resolved absorbance signal for the sample and the standards is similar and the calibration line obtained using aqueous standards is parallel to the standard addition line. Results obtained for several reference materials (lead contents between 6.1 and 64.4  g/g) were in good agreement with the certified value, the relative standard deviation being 3–9%. |
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| Keywords: | lead reference materials plant material slurry ETA-AAS |
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