Volume 11, Issue 2 (6-2015)                   HSR 2015, 11(2): 411-421 | Back to browse issues page

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Zendehdel R, Tayefeh-Rahimian R, Jafari Nodoushan R. The use of solid phase extraction method based on nano-zeolite Y to measure the amounts of trace heavy metals cadmium(Cd2 +) and Cr(Cr6 +) from aqueous solutions. HSR 2015; 11 (2) :411-421
URL: http://hsr.mui.ac.ir/article-1-769-en.html
1- Department of Occupational Hygiene, Faculty of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Abstract:   (809 Views)
Background: Exposure to heavy metals is concerned as a risk to human health and environment. Determination of elements in different solutions, is an introduction to the prevention and control of exposure to the metals. Todays, the sample preparation procedures are used to facilitate the analysis methods. In this study, nanozeolite Y based solid phase extraction have been proposed to concentrate of trace amounts of Cd2 + and Cr6 + from aqueous solutions.Methods: Solid phase was set with encapsulation of ligand in the micelles of Triton X-100 where these setting were loaded on the pore of nano-Zeolite Y. The prepared solid phase was investigated in various pH, 2.5-5, ligand concentrations and shaking time, 10-80 min. Metal extraction at the trace concentration from optimized solid phase was measured and validated by flameless-atomic absorption spectroscopy.Findings: Standard curves were obtained for both metals after extraction in the range of 5 to 80 µg/l, with a correlation coefficient of 99%. Coefficients of variation within - and between - day were less than 10% for the chromium (VI) and cadmium (II) extraction from the optimized solid phase at different concentrations.Conclusion: Results indicated that inhibition of the chelator such as APDC in the micelles of Triton X-100 can trap the metals in very small quantities. Investigation of various factors such as reproducibility and accuracy of extraction showed that functionalized nanozeolite Y has operated successfully in Cd2+ and Cr6+extraction.Key Words: Nanozeolite Y, Metal extraction, Cadmium, Chromium, Heavy metals
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Type of Study: Research | Subject: education health and promotion
Received: 2020/07/16 | Accepted: 2015/06/15 | Published: 2015/06/15

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