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Simultaneous preconcentration and determination of copper, nickel, cobalt and lead ions content by flame atomic absorption spectrometry [An article from: Journal of Hazardous Materials]
Book Details
Author(s)M. Ghaedi, F. Ahmadi, A. Shokrollahi
PublisherElsevier
ISBN / ASINB000PDYJOK
ISBN-13978B000PDYJO2
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
A sensitive and simple method for the simultaneous preconcentration of nutritionally important minerals in real samples has been reported. The method is based on the formation of metal complexes by 4,6-dihydroxy-2-mercaptopyrimidine (DHMP) loaded on activated carbon. The metals content on the complexes are then eluted using 5mL 2M HNO"3 in acetone, which are detected by AAS at resonance line. In this procedure, minerals such as Cu, Ni, Pb and Co could be analyzed in one run by caring out the simultaneous separation and quantification of them. At optimum condition the response are linear over concentration range of 0.04-1.1@mgmL^-^1 for Ni^2^+ and 0.04-1.0@mgmL^-^1 for Cu^2^+, Pb^2^+ and Co^2^+. The detection limits of each element are expressed as the amount of analytes in ngmL^-^1 giving a signal to noise ratio of 3 are equal to 3.5, 3.4, 2.9 and 8.4 for Ni^2^+, Co^2^+, Cu^2^+ and Pb^2^+. The sorption capacity was determined by saturating 0.5g solid phase. The loading capacity are 0.54, 0.53, 0.63 and 0.45mgg^-^1 for Ni^2^+, Co^2^+, Cu^2^+ and Pb^2^+. The ability of method for repeatable recovery of trace ion are 99.0, 98.9, 99.2 and 98.8 with R.S.D. of 1.4, 1.3, 1.2 and 1.4 for Ni^2^+, Co^2^+, Cu^2^+ and Pb^2^+. The low detection limits of these elements in this technique make it a superior alternative to UV-vis and in several applications, also an alternative to ICP-MS techniques. The method has been successfully applied for these metals content evaluation in some real samples including natural water, leaves of spinach and cow liver.
Description:
A sensitive and simple method for the simultaneous preconcentration of nutritionally important minerals in real samples has been reported. The method is based on the formation of metal complexes by 4,6-dihydroxy-2-mercaptopyrimidine (DHMP) loaded on activated carbon. The metals content on the complexes are then eluted using 5mL 2M HNO"3 in acetone, which are detected by AAS at resonance line. In this procedure, minerals such as Cu, Ni, Pb and Co could be analyzed in one run by caring out the simultaneous separation and quantification of them. At optimum condition the response are linear over concentration range of 0.04-1.1@mgmL^-^1 for Ni^2^+ and 0.04-1.0@mgmL^-^1 for Cu^2^+, Pb^2^+ and Co^2^+. The detection limits of each element are expressed as the amount of analytes in ngmL^-^1 giving a signal to noise ratio of 3 are equal to 3.5, 3.4, 2.9 and 8.4 for Ni^2^+, Co^2^+, Cu^2^+ and Pb^2^+. The sorption capacity was determined by saturating 0.5g solid phase. The loading capacity are 0.54, 0.53, 0.63 and 0.45mgg^-^1 for Ni^2^+, Co^2^+, Cu^2^+ and Pb^2^+. The ability of method for repeatable recovery of trace ion are 99.0, 98.9, 99.2 and 98.8 with R.S.D. of 1.4, 1.3, 1.2 and 1.4 for Ni^2^+, Co^2^+, Cu^2^+ and Pb^2^+. The low detection limits of these elements in this technique make it a superior alternative to UV-vis and in several applications, also an alternative to ICP-MS techniques. The method has been successfully applied for these metals content evaluation in some real samples including natural water, leaves of spinach and cow liver.
