Flotation-Separation and ICP-AES Determination of Ultra Trace Amounts of Copper, Cadmium, Nickel and Cobalt Using 2-Aminocyclopentene-1-dithiocarboxylic Acid

A rapid flotation method for separation and enrichment of ultra trace amounts of copper(II), cadmium(II), nickel(II) and cobalt(II) ions from water samples is established. At pH 6.5 and with sodium dodecylsulfate used as a foaming reagent, Cu2+, Cd2+, Ni2+ and Co2+ were separated simultaneously with...

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Bibliographic Details
Published in:Analytical Sciences 2005, Vol.21(9), pp.1063-1066
Main Authors: SHAMSIPUR, Mojtaba, HASHEMI, Omid Reza, SAFAVI, Afsaneh
Format: Article
Language:English
Subjects:
Cadmium - analysis
Cadmium - chemistry
Cadmium - metabolism
Carboxylic Acids - chemistry
Carboxylic Acids - metabolism
Cobalt - analysis
Cobalt - chemistry
Cobalt - metabolism
Copper - analysis
Copper - chemistry
Copper - metabolism
Cyclopentanes - chemistry
Cyclopentanes - metabolism
Ligands
Nickel - analysis
Nickel - chemistry
Nickel - metabolism
Spectrophotometry, Atomic - methods
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Summary:A rapid flotation method for separation and enrichment of ultra trace amounts of copper(II), cadmium(II), nickel(II) and cobalt(II) ions from water samples is established. At pH 6.5 and with sodium dodecylsulfate used as a foaming reagent, Cu2+, Cd2+, Ni2+ and Co2+ were separated simultaneously with 2-aminocyclopentene-1-dithiocarboxylic acid (ACDA) added to 1 l of aqueous solution. The proposed procedure of preconcentration is applied prior to the determination of these four analytes using inductivity coupled plasma-atomic emission spectrometry (ICP-AES). The effects of pH, concentration of ACDA, applicability of different surfactants and foreign ions on the separation efficiency were investigated. The preconcentration factor of the method is 1000 and the detection limits of copper(II), cadmium(II), nickel(II) and cobalt(II) ions are 0.078, 0.075, 0.072 and 0.080 ng ml-1, respectively.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.21.1063