An Automatic Background-Correcting Spectrometer.
Abstract
A new type of automatic, dual-channel, background correcting spectrometer has been developed. In the new spectrometer, one channel monitors the analyte line while the other views the background. The slit for the background channel, centered on the analyte, has a 1 mm width and is bisected by a thin wire which blocks out the radiation from the analyte line. Consequently, the background-channel photomultiplier tube receives radiation from both sides of the analyte line but not from the line itself. The signals from the two photomultiplier tubes are subtracted, the difference being the background-corrected value. Several determinations were performed showing the systems potential-calcium in a much higher concentration of potassium calcium in blood serum and barium in calcium solutions. These results were compared to those obtained by scanning across the analyte line and manually subtracting the background value. The two methods yielded very similar results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 25, 1975
- Accession Number
- ADA029654
Entities
People
- Gary M. Hieftje
- James T. Sinnamon
- Robert J. Sydor
Organizations
- Indiana University Bloomington