 |
Gold and silver determination in Waters by SPHERON® Thiol 1000 preconcentration and ETAAS
Medveď, J., Matúš, P., Bujdoš, M. and Kubová, J. Gold and silver determination in Waters by SPHERON® Thiol 1000 preconcentration and ETAAS Chemical Papers, Vol.60, No. 1, 2006, 27-31
|
|
|
Document type:
|
Článok z časopisu / Journal Article |
|
Collection:
|
Chemical papers
|
|
| Author(s) |
Medveď, J.
Matúš, P.
Bujdoš, M.
Kubová, J.
|
| Title |
Gold and silver determination in Waters by SPHERON® Thiol 1000 preconcentration and ETAAS
|
| Journal name |
Chemical Papers
|
| Publication date |
2006
|
| Year available |
2006
|
| Volume number |
60
|
| Issue number |
1
|
| ISSN |
0366-6352
|
| Start page |
27
|
| End page |
31
|
| Place of publication |
Poland
|
| Publisher |
Versita
|
| Collection year |
2006
|
| Language |
english
|
| Subject |
250000 Chemical Sciences
|
| Abstract/Summary |
A reliable procedure for the electrothermal atomic absorption spectrometry (ETAAS) determination of gold and silver in waters at trace level is described. The method is based on prior separation and preconcentration of the metals using a chelating sorbent SPHERON® Thiol 1000 after acidification of water samples (pH < 3) with nitric acid. Optimization of analytical variables during enrichment and ETAAS determination of the metals are discussed. The accuracy of the method is verified by analysis of certified reference materials. The limits of determinations based on 10 σ definition were 0.005 ng cm−3 for Au and 0.02 ng cm−3 for Ag. Precision of studied elements determination expressed by relative standard deviation varied in the range from 2.9 % to 16.4 %.
|
|
|
