PAPER CHROMATOGRAPHIC SEPARATION AND COMPLEXOMETRIC TITRATION OF TRACE AMOUNTS OF STRONTIUM AND CALCIUM IN BIOLOGICAL MATERIAL
Journal Article
·
· Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.
A specific, sensitive, and simple method of simultaneously determining calcium and strontium in biological material is described. Samples are burned in a closed atmosphere of oxygen, then taken up in dilute HNO/sub 3/. An aliquot is submitted to ascending paper chromatography. Calcium and strontium are separated from each othe-r, then recovered by calcination. Both elements are estimated by complexometric microtitration with EDTA, using calcein as indicator. Amounts of 25 x 10/sup -9/M calcium and strontium are quantitatively recovered to within 1 to 2% and can be determined with a coefficient of variation of about 5%. For larger quantities, the reproducibility ranges from 1 to 4%. (auth)
- Research Organization:
- Univ. of Louvain, Belg.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-014217
- OSTI ID:
- 4062928
- Journal Information:
- Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Vol. Vol: 33; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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