Study on Separation/Enrichment of Trace Nickel in Water Samples Using Ammonium Sulfate-Dithizone-Cetyl Trimethyl Ammonium Bromide System

Chang Qing Tu; Xin Rong Wen

doi:10.4028/www.scientific.net/AMM.665.233

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 665Study on Separation/Enrichment of Trace Nickel in...

Study on Separation/Enrichment of Trace Nickel in Water Samples Using Ammonium Sulfate-Dithizone-Cetyl Trimethyl Ammonium Bromide System

Abstract:

The paper presents a novel method for the separation/enrichment of trace Ni²⁺ using (NH₄)₂SO₄-dithizone(H₂Dz)-cetyl trimethyl ammonium bromide(CTMAB) system.The effects of different parameters on the enrichment yield of Ni²⁺ have been investigated. The possible enrichment mechanism of Ni²⁺ was discussed.The results showed that under the optimum conditions,the water-insoluble chelate of Ni(H₂Dz)₂ which formed by Ni²⁺ and H₂Dz was quantificationally floated onto CTMAB foam phase.In this condition, Cd²⁺、Zn²⁺、Mn²⁺、Fe²⁺ and Co²⁺ could not be floated.Therefore, Ni²⁺ was separated completely from the above metal ions. The proposed method has been successfully applied to the separation/enrichment of Ni²⁺ in various water samples, and the recoveries were 94.2%～103.8%.

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Periodical:

Applied Mechanics and Materials (Volume 665)

Pages:

233-236

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.665.233

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Online since:

October 2014

Authors:

Chang Qing Tu*, Xin Rong Wen

Keywords:

Cetyl Trimethyl Ammonium Bromide, Dithizone, Nickel, Separation/Enrichment

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