Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10561184 | Talanta | 2005 | 9 Pages |
Abstract
In the tests using the ultrasound bath, less metal was extracted than with the other extractive techniques and standard deviations were comparable to those obtained with the BCR procedure; in assays using microwaves at constant power, extraction efficiencies were different for different metals and for different reference materials and, in some cases, standard deviations were higher than those for the reference method. In contrast, tests with microwaves and constant temperature produced encouraging results: R.S.D.s lay in the 2-4% range, both for certified and not-certified metals; these values are very low compared to those for the reference method. Extraction efficiencies for certified metals were close to 100% for Cd, Zn, Cu and Ni and around 80% for Pb and Cr.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Silvia Canepari, Enrico Cardarelli, Silvano Ghighi, Luigia Scimonelli,