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Sequential Determination of 13 Elements in Complex Matrices by Stripping Voltammetry with Mixed Complexing Electrolytes
Author(s) -
Muratt Diana T.,
M. de Carvalho Leandro,
Viana Carine,
C. do Nascimento Paulo,
Reis Gabriel,
R. Dal Molin Thaís,
Grassmann Carla,
Smidt Geerd,
Koschinsky Andrea
Publication year - 2015
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201500089
Subject(s) - chemistry , chloranilic acid , dimethylglyoxime , inorganic chemistry , chelation , stripping (fiber) , nuclear chemistry , cobalt , materials science , composite material
This paper presents the determination of 13 elements in a simultaneous and sequential analysis using solochrome violet (SVRS), chloranilic acid (CA), diethylenetriaminepentaacetic acid (DTPA), dimethylglyoxime (DMG), and oxine as complexing electrolytes. The Methods were applied to determine Al 3+ , Fe 3+ , Mo 6+ , Zn 2+ , Cd 2+ , Pb 2+ , Cu 2+ , Ni 2+ , Co 2+ , Tl + , U 6+ , V 5+ , and Cr 6+ in fertilizers, plant materials, and foodstuffs. The Method was found to be selective and accurate (82.13–119.03 %) for elemental analysis in complex matrices that were previously submitted to a total oxidative digestion step (calcination and wet digestion). Mutual interferences of the elements were systematically investigated. The Sequential Method could be useful for the routine quality control of foodstuffs and fertilizer formulations regarding mineral nutrients or contaminants.