Differential pulse polarographic determination of selenium(IV) in whole blood using the catalytic hydrogen wave


Inam R. , Ekmekci G., Somer G.

TALANTA, vol.51, no.4, pp.825-830, 2000 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 51 Issue: 4
  • Publication Date: 2000
  • Doi Number: 10.1016/s0039-9140(99)00347-1
  • Title of Journal : TALANTA
  • Page Numbers: pp.825-830

Abstract

The selenium content in blood was determined using the hydrogen catalytic peak. This peak at -1.1 V was obtained in the presence of selenium and molybdenum at pH values of 1-4 in different buffers. For the determination of selenium, the Mo(VI) concentration has to be similar to 100-200 times higher than the selenium present. The linear domain range of selenium is 1 x 10(-6)-5 x 10(-9) M. The interference of zinc is eliminated by the addition of EDTA at pH 3.5 acetate buffer. The method was applied to 1.0 mi of digested blood, and 620 +/- 44 mu g l(-1) Se and 7.15 mg l(-1) Zn could be determined with a 90% (n = 6) confidence interval. (C) 1999 Elsevier Science B.V. All rights reserved.