Determination of antimony by using tungsten trap atomic absorption spectrometry

TİTRETİR DURAN S., Kenduezler E., Arslan Y., KULA İ., Bakirdere S., ATAMAN O. Y.

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, vol.63, no.8, pp.875-879, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 63 Issue: 8
  • Publication Date: 2008
  • Doi Number: 10.1016/j.sab.2008.03.021
  • Journal Name: SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.875-879
  • Keywords: antimony, hydride generation, W-trap, atomic absorption spectrometry, in-situ preconcentration, CLOUD POINT EXTRACTION, HEATED W-COIL, HYDRIDE GENERATION, ONLINE PRECONCENTRATION, SPECIATION ANALYSIS, INORGANIC ANTIMONY, STIBINE, BISMUTH, WATERS
  • Middle East Technical University Affiliated: Yes

Abstract

An electrically heated tungsten coil was used as a trap in the determination of antimony. The technique consists of three steps. Initially, SbH(3) is formed by hydride generation procedure; then the analyte species in vapor form are transported to W-coil trap heated at 370 degrees C. Following the preconcentration step, the trap is heated to 895 degrees C; analyte species are revolatilized and transported to the flame-heated quartz atom cell where atornization and the formation of signal take place. The experimental parameters were optimized both for trap and no-trap studies. The most important experimental parameters are concentrations of HCI and NaBH4 solutions. H2 and At gas flow rates. and collection and revolatilization temperatures of W-coil. Accuracy was tested using a certified reference material, waste water EU-L-1. Limit of detection for the system is 16 ng 1- 1 using a sample of 36 ml collected in 4.0 min. Enhancement factor in sensitivity was 17. (c) 2008 Elsevier B.V. All rights reserved.