AN IMPROVED FLAME SPECTROPHOTOMETER FOR BIOLOGIC CALCIUM ANALYSIS.
Rept. for 4 Dec 63-15 Apr 64,
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX
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A flame spectrophotometry system is presented which determines the calcium content of solutions to an accuracy of plus or minus 1. This accuracy is obtained by modifying the Beckman model DU flame spectrophotometer to improve its sensitivity and stability. The modifications include a the substitution of acetylene for oxygen as the spraying gas, b introduction of a mechanism for adjusting the wavelength selector in small increments, c redesign of the photomultiplier circuit to provide an increased current amplification with a wider range of control, and d addition of a wide-scale, sensitive galvanometer for the purpose of prerecording monitoring. The entire system has been used successfully for more than a year to determine serum, urine, and stool calcium of human subjects. Author
- Inorganic Chemistry