Investigations on nature of re-volatilization from atom trap surfaces in flame AAS

Korkmaz D., Kumser S., Ertas N., Mahmut M., Ataman O.

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, cilt.17, sa.12, ss.1610-1614, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 17 Sayı: 12
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1039/b207788d
  • Dergi Adı: JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1610-1614
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

Some experiments were designed and performed in order to elucidate the mechanism of re-volatilization in silica traps using flame AAS. A water-cooled U-shaped silica trap and a slotted silica tube trap were used, while organic solvent aspiration was employed for re-volatilization. Analytes were Bi, Au, Mn, Cd and Pb. The detailed experiments have shown that heating is not necessarily associated with re-volatilization: however, a direct contact between flame and active silica surface is required. The effect of the critical C/O value in the flame was also investigated and found to be important.