DETERMINATION OF NICKEL IN BIOLOGICAL SAMPLES BY ETA-AAS AND ICP-AES AFTER ACIDIC DISSOLUTION (WITH MICROWAVE-HEATING AND PRECONCENTRATION BY LIQUID-LIQUID-EXTRACTION)
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作者:
ALONSO, EV
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机构:Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Málaga
ALONSO, EV
DETORRES, AG
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机构:Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Málaga
DETORRES, AG
PAVON, JMC
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机构:Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Málaga
PAVON, JMC
机构:
[1] Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Málaga
The determination of nickel by ETA-AAS and ICP-AES in biological samples with prior extraction into methyl isobutyl ketone with 1,5-bis(di-2-pyridylmethylene)thiocarbonohydrazide as extracting reagent is described. Microwave dissolution in closed teflon vessels has been used for the dissolution of biological materials. At least three samples can be decomposed simultaneously with a preset heating programme. Results of analyses of some certified biological reference materials are given.