DETERMINATION OF NICKEL IN BIOLOGICAL SAMPLES PREPARED BY MICROWAVE DISSOLUTION USING ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY AFTER EXTRACTION WITH 1,5-BIS[PHENYL-(2-PYRIDYL)METHYLENE] THIOCARBONHYDRAZIDE
Ev. Alonso et al., DETERMINATION OF NICKEL IN BIOLOGICAL SAMPLES PREPARED BY MICROWAVE DISSOLUTION USING ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY AFTER EXTRACTION WITH 1,5-BIS[PHENYL-(2-PYRIDYL)METHYLENE] THIOCARBONHYDRAZIDE, Analytica chimica acta, 283(1), 1993, pp. 224-229
An electrothermal atomization atomic absorption spectrometric method f
or the determination of traces of nickel after extraction of the metal
into methyl isobutyl ketone containing 1,5-bis[phenyl(2-pyridyl)methy
lene) thiocarbonhydrazide is suggested. The chief advantage of the met
hod lies in its maximum allowable aqueous-to-organic phase volume rati
o of 37. The method was applied to the determination of nickel in vari
ous biological tissues, serum and human urine.