title: Differential pulse polarographic determination of selenium(IV) in whole blood using the catalytic hydrogen wave.
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 approximately 100-200 times higher than the selenium present. The linear domain range of selenium is 1x10(-6)-5x10(-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 ml of digested blood, and 620+/-44 mug l(-1) Se and 7.15 mg l(-1) Zn could be determined with a 90% (n=6) confidence interval.
authors.affiliation: Gazi Universitesi, Fen-Edebiyat Fakültesi, Kimya Bölümü, 06500 Ankara, Turkey.
authors.forename: R
authors.initials: R
authors.lastname: Inam
authors.forename: G
authors.initials: G
authors.lastname: Ekmekçi
authors.forename: G
authors.initials: G
authors.lastname: Somer