Cloud point extraction and spectrophotometric determination of mercury species at trace levels in environmental samples

ULUSOY H. İ., GÜRKAN R., ULUSOY S.

TALANTA, cilt.88, ss.516-523, 2012 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 88
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.talanta.2011.11.026
  • Dergi Adı: TALANTA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.516-523
  • Anahtar Kelimeler: Hg(II) determination, Cloud point extraction, Spectrophotometry, PAN, TAR, Triton X-114, ATOMIC-ABSORPTION-SPECTROMETRY, OPTICAL-EMISSION SPECTROMETRY, PLASMA-MASS SPECTROMETRY, WATER SAMPLES, PRECONCENTRATION, VAPOR, SEPARATION, CADMIUM, DITHIZONE, SELENIUM
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

A new micelle-mediated separation and preconcentration method was developed for ultra-trace quantities of mercury ions prior to spectrophotometric determination. The method is based on cloud point extraction (CPE) of Hg(II) ions with polyethylene glycol tert-octylphenyl ether (Triton X-114) in the presence of chelating agents such as 1-(2-pyridylazo)-2-naphthol (PAN) and 4-(2-thiazolylazo) resorcinol (TAR). Hg(II) ions react with both PAN and TAR in a surfactant solution yielding a hydrophobic complex at pH 9.0 and 8.0, respectively. The phase separation was accomplished by centrifugation for 5 min at 3500 rpm.