Simultaneous determination of Cr(III) and Cr(VI) using differential pulse polarography and application to Gerede River


ŞENDİL O. , Mohammed N., Somer G.

TURKISH JOURNAL OF CHEMISTRY, cilt.36, ss.335-346, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 36 Konu: 2
  • Basım Tarihi: 2012
  • Doi Numarası: 10.3906/kim-1103-42
  • Dergi Adı: TURKISH JOURNAL OF CHEMISTRY
  • Sayfa Sayıları: ss.335-346

Özet

Determination of Cr(III) in the presence of Cr(VI) from one polarogram is not easy. No such procedure was found in the literature. In polarographic studies Cr(III) had a peak only in acidic medium, while Cr(VI) had either 1 or 2 peaks in both acidic and basic solutions. In solutions that contain these 2 ions, the peak obtained in acidic medium for Cr(III) will be the sum of both ions. Thus, Cr(III) cannot be determined directly from one polarogram.