The use of gold nanoparticles as an effective modifier for the determination of arsenic and antimony by electrothermal atomic absorption spectrometry


GUNDUZ S., Akman S., BAYSAL A., Culha M.

Microchimica Acta, vol.172, no.3-4, pp.403-407, 2011 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 172 Issue: 3-4
  • Publication Date: 2011
  • Doi Number: 10.1007/s00604-010-0500-4
  • Journal Name: Microchimica Acta
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.403-407
  • Keywords: Electrothermal atomic absorption spectrometry, Arsenic, Antimony, Modifier, Gold nanoparticles, METAL MODIFIERS, MECHANISMS, PALLADIUM

Abstract

Gold nanoparticles (AuNPs) were used as a new chemical modifier for the determination of arsenic and antimony in salt solutions by electrothermal atomic absorption spectrometry. The AuNPs were prepared by reducing chloroauric acid with sodium citrate. The effects of pyrolysis and atomization temperatures, the amounts of interferents and modifier on the sensitivities of arsenic and antimony were investigated. As and Sb remain in the graphite tube up to 1,100°C, which is sufficient for the determination of the two metals in certified reference materials and spiked sea water samples within a 95% confidence level with low RSD (<10%). The detection limits (N = 10 at 3σ) for As and Sb in sea water are 2.3 μg L-1 and 3.0 μg L-1, respectively. Almost no background as well as a blank value was detected for AuNPs. © 2010 Springer-Verlag.