Electrothermal atomization atomic absorption spectrometry with stabilized aqueous standards for the determination of cadmium in whole blood
| Autor: | Zully Benzo, Rebeca Fraile, Nereida Carrión |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
inorganic chemicals
Cadmium Aqueous solution Chemistry Analytical chemistry chemistry.chemical_element Biochemistry Analytical Chemistry law.invention Metal Matrix (chemical analysis) law visual_art Vaporization visual_art.visual_art_medium Environmental Chemistry Atomic absorption spectroscopy Quantitative analysis (chemistry) Spectroscopy Whole blood |
| Zdroj: | Analytica Chimica Acta. 231:283-288 |
| ISSN: | 0003-2670 |
| DOI: | 10.1016/s0003-2670(00)86427-2 |
| Popis: | The use of aqueous calibration graphs obtained by addition of a mixture of (NH4) 2 HPO4 and Mg(NO3) 2 was used in order to determine cadmium in blood samples diluted only with Triton X-100, using atomic absorption spectrometry with electrothermal atomization using a L'vov platform and peak-height evaluation. The addition of this mixture to the aqueous standards results in a thermal behaviour of aqueous cadmium similar to that shown by cadmium in a blood matrix. Several reference materials were analysed for cadmium by the proposed method. The results indicate that the accurate determination of blood cadmium is possible. The adverse toxic effects of cadmium are now well recognized, and the presence of this metal in whole blood is regarded as a reliable index of the extent of recent metal uptake [1-3]. The most widely used technique for measuring Cd in blood samples is atomic absorption spectrometry with electrothermal atomization (ETA-AAS). However, when carrying out the direct determination of Cd in blood sample by this technique, the bulk matrix constituents of the sample vaporize in the same temperature region as the metal and produce a high background signal which, if not corrected, would lead to erroneous results. Methods used to reduce matrix interferences, in addition to optimization of the furnace parameters, have included chemical treatment of the |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|