A fast method for the simultaneous determination of Co and Mn in urine was developed using a multielement Perkin-Elmer SIMAA 6000 graphite furnace atomic absorption spectrophotometer. A simplex optimization was used to established the pyrolysis and the atomization temperature, and the ramp and hold time for the pyrolysis step. The ample preparation was a simple 1+1 dilution, using a diluent of 2% v/v HNO3 and 0.05% m/v Triron X-100 in MilliQ-water. The experimental detection limits were 0.18 ug.l-1 for Co, and 0.09 ug.l-1 for Mn. The recovery studies, to check for bias, have shown acceptable accuracy for the procedure (104% for Co and 100% for Mn, with 15 and 13% RDS respectively).
IVERSEN Bent;
PANAYI Antonia;
CAMBLOR Juan Pablo;
SABBIONI Enrico;
1996-04-16
JRC12804
https://publications.jrc.ec.europa.eu/repository/handle/JRC12804,
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