Arsenic speciation in geothermal waters by HPLC/GFAAS and HPLC/HGAAS methods

Buyuktuncel E., BEKTAS S., SALIH B., EVIRGEN M., GENC O.

FRESENIUS ENVIRONMENTAL BULLETIN, cilt.6, ss.494-501, 1997 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 6
  • Basım Tarihi: 1997
  • Dergi Adı: FRESENIUS ENVIRONMENTAL BULLETIN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.494-501
  • İnönü Üniversitesi Adresli: Hayır

Özet

From a toxicity assessment perspective, it is not sufficient to quantitate the total amount of arsenic in environmental samples; its chemical form must also be determined. The presented study is dedicated to the optimization of the experimental conditions of HPLC/GFAAS and HPLC/HGAAS hybrid methods for the speciation of arsenic in geothermal water samples. In the hydride generation method, NaAsO2, DMAA and Na2HAsO4 forms are determined as the p-APA form does not respond to this technique. The results obtained by the two hybrid methods showed that the predominant form of arsenic in geothermal waters is Na2HAsO4. The total amount of arsenic in the samples is found to be 1134.6+/-4.4 mu g/L.