作者： P. Bermejo-Barrera , E. Pena-Vazquez , A. Bermejo-Barrera , R. Varela-Vilela , M. C. Barciela-Alonso
DOI:
关键词: Graphite furnace atomic absorption 、 Magnesium nitrate 、 Graphite 、 Antimony 、 Chemistry 、 Matrix (chemical analysis) 、 Slurry 、 Absorbance 、 Palladium 、 Analytical chemistry
摘要: A method for the determination of antimony in a slurry marine sediment samples was developed. The temperatures graphite furnace program were optimized using mixed chemical modifier consisting palladium and magnesium nitrate wavelength 217.6 nm. Under these conditions, background levels very high atomization profile showed pronounced baseline rendering quantification impossible; this effect can be due to presence silicon sample. experiments repeated 206.8-nm line at which no negative observed decreased. Therefore, absorbance selected work. mineralization 1400 1700 °C, respectively. concentration matrix also investigated best results obtained with 40-30 mg L -1 nitrate, analytical characteristics 0.8 2.8 μg g detection limits, respectively, characteristic mass 18.8 pg 95.6% recovery percentage. applied different surface from Ria de Arousa (NW Spain).