| Autor: |
W. van Deijck, Anna M. Roelofsen, Robert F. M. Herber, Herman J. Pieters |
| Rok vydání: |
1983 |
| Předmět: |
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| Zdroj: |
Spectrochimica Acta Part B: Atomic Spectroscopy. 38:791-797 |
| ISSN: |
0584-8547 |
| DOI: |
10.1016/0584-8547(83)80177-3 |
| Popis: |
The construction of a temperature-controlled feedback system for electrothermal atomization-atomic absorption spectrometry (ETA-AAS) using an optical pyrometer applied to the atomization stage is described. The system was used in conjunction with a fast-response background monitoring device. The heating rate of the furnace amounted to 1400° s−1 with a reproducibility better than 1%. The precision of the temperature control at a steady state temperature of 2000°C was 0.1%. The analytical improvements offered by the present system have been demonstrated by the determination of cadmium and lead in blood and finally by the determination of lead in serum. Both the sensitivity and the precision of the method have been improved. The accuracy of the method was checked by determining the lead content for a number of scrum samples both by ETA-AAS and differential pulse anodic stripping voltametry (DPASV) and proved to be satisfactory. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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