The direct flame photometric determination of Strontium: Calcium ratios in the ash of human bones and teeth

✍ Scribed by M.S.W. Webb; M.L. Wordingham

• Publisher: Elsevier Science
• Year: 1963
• Tongue: English
• Weight: 561 KB
• Volume: 28
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)87265-7

✦ Synopsis

In recent years the physiological effects produced by the radioactive fission products from atomic weapons have necessitated an intensified study of the metabolism of strontium in animals and plants. Some'years ago this laboratory developed spectra-, graphic methods1 in response to a demand ,for the'determination of this element in a variety of biological materials:-At that 'time it was found that by using an integrating flame photometer with,an automatic background correcting device* adequate sensitivity was obtained for the .determination of strontium in the calcium oxalate fractions separated from milk and vegetation; The' suppressing effect of the phosphate component in the ash of ,bones ,axid teeth precluded the use of this technique for the direct determination of strontium insolutions of, these materials and the sample was buffered with a mixture bf graphite and copper'sulphate and the spectrum excited by means of a d.c. arc. Whilst the latter,metho'd has 'given results of good accuracy and reasonable reproducibility, the determination of:strontium : calcium ratios in human