Cloud Point Extraction for the Determination of Trace Amounts of Cobalt in Water and Food Samples by Flame Atomic Absorption Spectrometry
Joint Authors
Guo, Yong
Meng, Shuangming
Wang, Shangzhi
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-10-08
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
A cloud point extraction (CPE) procedure which was developed for the separation and preconcentration of trace amounts of cobalt is combined with flame atomic absorption spectrometry (FAAS) to determine trace amounts of cobalt in water and food samples.
The procedure is based on the formation of the hydrophobic complex between Co(II) and 4-methoxy-2-sulfo-benzenediazoaminoazo-benzene (MOSDAA) followed by its extraction into a Triton X-114 surfactant-rich phase.
The parameters such as pH of sample, concentrations of MOSDAA and Triton X-114, equilibrium temperature, and equilibrium time, which affect both complexation and extraction, are optimized.
Under the selected optimum conditions, the preconcentration of 10.0 mL, 0.1 μg mL−1 Co(II) solution results in a limit of detection of 0.47 ng mL−1 (3σ) and an enrichment factor of 19.
A relative standard deviation of 2.78% (n=6, c=0.1 μg mL−1) for the determination of Co(II) is obtained.
The proposed method was applied for the determination of trace amounts of cobalt in river water and millet samples with satisfactory results.
American Psychological Association (APA)
Wang, Shangzhi& Meng, Shuangming& Guo, Yong. 2012. Cloud Point Extraction for the Determination of Trace Amounts of Cobalt in Water and Food Samples by Flame Atomic Absorption Spectrometry. Journal of Spectroscopy،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-494524
Modern Language Association (MLA)
Wang, Shangzhi…[et al.]. Cloud Point Extraction for the Determination of Trace Amounts of Cobalt in Water and Food Samples by Flame Atomic Absorption Spectrometry. Journal of Spectroscopy No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-494524
American Medical Association (AMA)
Wang, Shangzhi& Meng, Shuangming& Guo, Yong. Cloud Point Extraction for the Determination of Trace Amounts of Cobalt in Water and Food Samples by Flame Atomic Absorption Spectrometry. Journal of Spectroscopy. 2012. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-494524
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-494524