Cloud point extraction and spectrophotometric determination of mercury species at trace levels in environmental samples
TALANTA, cilt.88, ss.516-523, 2012 (SCI-Expanded, Scopus)
- 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.