Danuta Barałkiewicz
Adam Mickiewicz University in Poznań, Poland
Title: Multielemental speciation analysis of five toxic species: As(III), As(V), Cr(VI), Sb (III) and Sb(V) in drinking water samples by advanced hyphenated technique HPLC/ICP-DRC-MS
Biography
Biography: Danuta Barałkiewicz
Abstract
Multielemental determination of five toxic species: As(III), As(V), Cr(VI), Sb (III) and Sb(V) in drinking water samples using high performance liquid chromatography hyphenated to inductively coupled plasma mass spectrometry (HHPLC/ICP-DRC-MS)technique was developed. Optimization of the detection and separation conditions was conducted. Dynamic reaction cell (DRC) with oxygen as reaction gas was involved in the experiments. Obtained analytical signals for species were symmetrical, as studied by anion-exchange chromatography. Applied mobile phase consisted of 3 mM of EDTANa2 and 36 mM of ammonium nitrate. Full separation of species was achieved in 15 min with use of gradient elution program. Detailed validation of analytical procedure proved the reliability of analytical measurement. Obtained recoveries confirmed the lack of interferences’ influence on analytical signals as their values were in the range of 91%-110%. The applicability of the proposed procedure was tested on drinking water samples characterized by mineralization up to 7390 mg L-1.