Performance of selected destruction methods for the determination of heavy metals in reed plants ( Phragmites australis)

The aim of this study was to assess the performance of selected destruction methods for the determination of heavy metals in reed plants ( Phragmites australis (Cav.) Trin. ex Steudel). Homogenised samples of stems and leaves were subjected to six destruction methods and analysed for Cd, Cu, Pb, Zn,...

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Bibliographic Details
Published in:Analytica chimica acta 2003-11, Vol.497 (1), p.191-198
Main Authors: Du Laing, Gijs, Tack, Filip M.G, Verloo, Marc G
Format: Article
Language:English
Subjects:
Analyses
Analytical chemistry
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Chemistry
Destruction procedures
Determination
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
Exact sciences and technology
Freshwater
Fundamental and applied biological sciences. Psychology
Heavy metals
hydrogen peroxide
Phragmites australis
Reed
Spectrometric and optical methods
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Summary:The aim of this study was to assess the performance of selected destruction methods for the determination of heavy metals in reed plants ( Phragmites australis (Cav.) Trin. ex Steudel). Homogenised samples of stems and leaves were subjected to six destruction methods and analysed for Cd, Cu, Pb, Zn, Ni, Cr, Fe and Mn. A microwave destruction procedure yielded the best overall recoveries. An overnight destruction with HNO 3 and a destruction using HNO 3 and H 2O 2 yielded Cd, Cu, Pb, Zn, Fe and Mn recoveries which could be acceptable for some purposes. For these elements, both methods could be used as relatively cheap, easy and fast substitutes for microwave destruction. A destruction using HNO 3 and HClO 4 is not recommended for the determination of Pb in reed plants, whereas dry ashing procedures were suitable for none of the elements. For the determination of Ni and Cr in reed plant material, microwave destruction appeared the only acceptable method. Heavy metal analysis of reed plants significantly depends upon the destruction procedure used. There is a need for certified reference reed samples for quality control.
ISSN:0003-2670
1873-4324
DOI:10.1016/j.aca.2003.08.044