Cloud point extraction and micro amount determination of cadmium as chloro anion complex in real samples by using molecular spectrophotometry
Joint Authors
Jawad, Shawkat Kazim
Khammas, Zuhayr Abd al-Amir
Ali, Ibtehaj Rahim
Source
Journal of Kufa for Chemical Science
Issue
Vol. 2012, Issue 6 (31 Dec. 2012), pp.67-85, 19 p.
Publisher
University of Kufa Faculty of Education for Women Department of Chemistry
Publication Date
2012-12-31
Country of Publication
Iraq
No. of Pages
19
Main Subjects
Topics
Abstract EN
A new procedure for the separation, preconcentration and determination of cadmium as a chloro anion was presented by using the combined cloud point extraction (CPE) methodology and molecular spectrophotometry.
The extraction process involved the conversion of cadmium (II) ion in acidic aqueous solution into chloro anion [CdCl4]2-complex and subsequently the hydrophobic ion-pair complex formed with crystal violet (CV) cation was extracted into the nonionic surfactant (Triton X-100) rich phase at a temperature above its cloud point (CPT).
After phase separation, the surfactant-rich phase was diluted with ethanol and cadmium (II) ion determined by UV-Vis spectromphotometric technique at λmax of 449 nm.
The optimization of complexation and extraction conditions was investigated.
Thermodynamic parameters of CPE for solubilization process of the ion-pair complex in Triton X-100 were also considered.
Under the optimized conditions, the preconcentration of a 10 mL sample gave preconcentration and enrichment factors were of 125 and 150 respectively.
The calibration graph was linear in the range of 0.25-5 μg mL-1 with a correlation coefficient of 0.9995 and limit of detection of 0.042 μg mL−1.
The relative standard deviation for replicate determinations at (3) μg mL−1 level was of 2.68 %.
The proposed method was applied for the determination of cadmium in soil, vegeTables, plant leaves and water which gave satisfactory results relative to results obtain by AAS method
American Psychological Association (APA)
Khammas, Zuhayr Abd al-Amir& Jawad, Shawkat Kazim& Ali, Ibtehaj Rahim. 2012. Cloud point extraction and micro amount determination of cadmium as chloro anion complex in real samples by using molecular spectrophotometry. Journal of Kufa for Chemical Science،Vol. 2012, no. 6, pp.67-85.
https://search.emarefa.net/detail/BIM-642585
Modern Language Association (MLA)
Khammas, Zuhayr Abd al-Amir…[et al.]. Cloud point extraction and micro amount determination of cadmium as chloro anion complex in real samples by using molecular spectrophotometry. Journal of Kufa for Chemical Science No. 6 (Dec. 2012), pp.67-85.
https://search.emarefa.net/detail/BIM-642585
American Medical Association (AMA)
Khammas, Zuhayr Abd al-Amir& Jawad, Shawkat Kazim& Ali, Ibtehaj Rahim. Cloud point extraction and micro amount determination of cadmium as chloro anion complex in real samples by using molecular spectrophotometry. Journal of Kufa for Chemical Science. 2012. Vol. 2012, no. 6, pp.67-85.
https://search.emarefa.net/detail/BIM-642585
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 84-85
Record ID
BIM-642585