Ultratrace determination of arsenic by hydride generation atomic absorption spectrometry with preconcentration on gold nanoparticles

0555282 - ÚIACH 2023 RIV GB eng J - Článek v odborném periodiku
Fernandes de Oliveira, Aline - Svoboda, Milan - Benada, Oldřich - Kratzer, Jan
Ultratrace determination of arsenic by hydride generation atomic absorption spectrometry with preconcentration on gold nanoparticles.
Journal of Analytical Atomic Spectrometry. Roč. 37, č. 3 (2022), s. 620-631. ISSN 0267-9477. E-ISSN 1364-5544
Grant CEP: GA ČR GA18-01116S; GA ČR(CZ) GA21-17044S
Institucionální podpora: RVO:68081715 ; RVO:61388971
Klíčová slova: hydride preconcentration * gold nanopraticles * arsenic
Obor OECD: Analytical chemistry; Analytical chemistry (MBU-M)
Impakt faktor: 3.4, rok: 2022
Způsob publikování: Omezený přístup

Three types of gold-based materials were tested as potential preconcentration surfaces for arsenic after hydride generation. The best results were achieved for gold nanoparticles (60 nm, 5.5 µg Au), trapping temperature of 350 °C and volatilization at 900 °C. Preconcentration efficiency of 90% was found. The limit of detection reached 6.5 pg ml-1 As (117 pg) for 300 s preconcentration. The modification of quartz surface by gold nanoparticles was studied by scanning electron microscopy (SEM) and X-ray microanalysis (EDS).
Trvalý link: http://hdl.handle.net/11104/0329804