Medium-to-high antimony concentrations in environmental samples determined by ETAAS using slurry-based sample preparation methods

摘要

Several slurry sampling procedures were evaluated for the electrothermal atomic absorption spectrometry (ETAAS) determination of medium (> 20-50 pg/g) to high (similar to 200 pg/g) Sb concentrations in two widely different solid environmental samples (atmospheric particulate matter and marine sediments). These procedures included (a) direct ultrasound slurry sampling (USS) (using large slurry volumes, At flow during atomization, and non-resonance lines), (b) direct vortex-mixing slurry sampling, and (c) ultrasound-assisted slurry extraction (USE).