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On-line preconcentration system for nickel determination in food samples by flame atomic absorption spectrometry
(2001)
An on-line preconcentration system for nickel determination in natural foods has been developed. In it nickel(II) ions are fixed on a minicolumn packed with Amberlite XAD-2 loaded with 2-(2-benzothiazolylazo)-2-p-cresol ...
Determination of copper, iron, nickel and zinc in gasoline by FAAS after sorption and preconcentration on silica modified with 2-aminotiazole groups
(Elsevier B.V., 2005-01-01)
Silica gel chemically modified with 2-aminotiazole groups (SiAT), was used for preconcentration of cupper, zinc, nickel and iron from gasoline, normally used as a engine fuel. Surface characteristics and surface area of ...
Determination of copper, iron, nickel and zinc in gasoline by FAAS after sorption and preconcentration on silica modified with 2-aminotiazole groups
(Elsevier B.V., 2005-01-01)
Silica gel chemically modified with 2-aminotiazole groups (SiAT), was used for preconcentration of cupper, zinc, nickel and iron from gasoline, normally used as a engine fuel. Surface characteristics and surface area of ...
Simultaneous preconcentration of copper, zinc, cadmium, and nickel in water samples by cloud point extraction using 4-(2-pyridylazo)-resorcinol and their determination by inductively coupled plasma optic emission spectrometry
(ELSEVIER SCIENCE BV, 2009)
A procedure for simultaneous separation/preconcentration of copper. zinc, cadmium, and nickel in water samples, based on cloud point extraction (CPE) as a prior step to their determination by inductively coupled plasma ...
CLOUD POINT EXTRACTION/PRECONCENTRATION OF COPPER IONS EXPLOITING THE FORMATION OF COMPLEXES WITH DMIT [4,5-DIMERCAPTO-1,3-DITHYOL-2-THIONATE]
(Soc Brasileira QuimicaSao PauloBrasil, 2012)