Spectrophotometric determination of samarium(III) with chrome azurol S in the presence of cetylpyridinium chloride

Soylak M., TÜRKOĞLU O.

TALANTA, cilt.53, sa.1, ss.125-129, 2000 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 53 Sayı: 1
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1016/s0039-9140(00)00386-6
  • Dergi Adı: TALANTA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.125-129
  • Anahtar Kelimeler: spectrophotometry, samarium(III), chrome azurol S, cetylpyridinium chloride
  • Erciyes Üniversitesi Adresli: Evet

Özet

A sensitive, simple method for the determination of trace amounts of samarium by spectrophotometry is described based on the formation of the samarium-chrome azurol S (CAS) complex in micellar medium. The molar absorptivities of the complexes at pH 7.5 at 505 nm were 3.6 x 10(4) and 1.4 x 10(5) 1 mol(-1) cm(-1) for water media and cetylpyridinium chloride (CPC), respectively. Beer's law is obeyed from 0.05-2 mg 1(-1) of samarium at 505 nm as Sm-CAS-CPC complex. Optimal conditions such as reagent amounts, and pH for the samarium determination were reported. The effects of foreign ions were also investigated. The proposed method was successfully applied to the determination of samarium contents in synthetic samples. (C) 2000 Elsevier Science B.V. All rights reserved.