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A flow injection (FI) system was used to develop an efficient on-line sorbent extraction preconcentration system for palladium by graphite furnace atomic absorption spectrometry (GFAAS). The investigated metal was preconcentrated on a microcolumn packed with 1,5-bis(di-2-pyridyl)methylene thiocarbohydrazide immobilized on silica gel (DPTH-gel). The palladium is eluted with 40mul of HCl 4M and directly introduced into the graphite furnace. The detection limit for palladium under the optimum conditions was 0.4ngml(-1). This procedure was employed to determine palladium in different samples.


F Sánchez Rojas, C Bosch Ojeda, J M Cano Pavón. Automated on-line separation preconcentration system for palladium determination by graphite furnace atomic absorption spectrometry and its application to palladium determination in environmental and food samples. Talanta. 2006 Dec 15;70(5):979-83

PMID: 18970870

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