Determination of Cd, Cu, Pb and Zn in Woodlouse (Oniscus Asellus)

The aim of this study was to assess the performance of selected destruction methods for the determination of heavy metals (Cd, Cu, Pb and Zn) in woodlouse (Oniscus asellus). A vigorous total analysis involving microwave destruction with HF, HCl and HNO 3 (method 1) was used as a reference method. Co...

Full description

Saved in:
Bibliographic Details
Published in:International journal of environmental analytical chemistry 2000-10, Vol.78 (2), p.149-158
Main Authors: Tack, Filip M.G., Bogart, Nicolas, Verloo, Marc G., Hendrickx, Frederik, Maelfait, Jean-Pierre, Mertens, Johan
Format: Article
Language:English
Subjects:
analytical method
Heavy metals
invertebrates
woodlouse
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The aim of this study was to assess the performance of selected destruction methods for the determination of heavy metals (Cd, Cu, Pb and Zn) in woodlouse (Oniscus asellus). A vigorous total analysis involving microwave destruction with HF, HCl and HNO 3 (method 1) was used as a reference method. Consistently low values for the dry ashing method may indicate incomplete dissolution of the elements and/or losses through volatilisation. Method 3 (concentrated HNO 3 ) that frequently is used in literature, produced erroneous values for Cd, Cu and Pb. Results were consistent with the microwave digestion, provided H 2 O 2 was used during digestion (method 4, HNO 3 /H 2 O 2 ). Method 5 (HNO 3 /HCIO 4 , one destruction step) yielded low recoveries when only one destruction step was applied. Applying two destruction steps (method 6) resulted in values consistent with the microwave method, but was at the expense of reproducibility and rendered the method more lengthy and laborious. Because of the very good performance combined with speed and simplicity, destruction with HNO 3 /H 2 O 2 (method 4) emerged as the most convenient method.
ISSN:0306-7319
1029-0397
DOI:10.1080/03067310008044407