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| Titel: |
Recent Instrumental Developments in the Background Correction Systems for Flame and Furnace Atomic Absorption |
| Auteur: |
Galli, P. Magistrelli, C. |
| Verschenen in: |
Chemistry & ecology |
| Paginering: | Jaargang 2 (1986) nr. 3 pagina's 195-198 |
| Jaar: |
1986-05-01 |
| Inhoud: |
One of the problems that makes the use of the AA technique less frequent in some analytical fields is the interference of non-specific absorptions, particularly high in the furnace atomization. Traditional systems (used for several years for background correction with a deuterium arc lamp) are not applicable to some analyses, even if they meet most of the analytical needs. Some of the limits of this type of background correction are: Incorrect results in the presence of “structured” background. In this case, since the instrument carries on background determination to be substracted from the analytical wavelength measurement taking into account the average of the values within the monochromator bandpass, it can sometimes happen that the “background” to be substracted is over or under-estimated. Difficulty in the compensation at wavelengths over 420 nm. For some instruments, the problem is overtaken by mounting a tungsten lamp, that has the maximm emission energy in the visible region. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 11 van 12 gevonden artikelen
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