Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Determination of trace amounts of lead using the flotation-spectrophotometric method

Sat Jun 25 09:15:57 2022

(2011) Determination of trace amounts of lead using the flotation-spectrophotometric method. Analytical Chemistry Insights. pp. 15-20. ISSN 11773901 (ISSN)

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low concentrations of lead. It is based on flotation of a complex of Pb2+ ions and Alizarin yellow between aqueous and n-hexane interface at pH = 6. The proposed procedure is also applied for determination of lead in both tap water and prepared sea water samples. Beer's Law was obeyed over the concentration range of 3.86 × 10-8 To 8.20 × 10-7 molL-1 (8-170 ngmL-1) with an apparent molar absorptivity of 1.33 × 106 molL-1 cm-1 for a 100 mL aliquot of the water sample. The detection limit (n = 10) was 8.7 × 10-9 molL-1 (1.0 ngmL-1) and the Relative standard deviation (R.S.D), (n = 10) for 7.2 × 10-7 molL-1 (150 ngmL-1) of Pb (II) was 4.36. A notable advantage of the method is that the determination of Pb (II) is free from the interference of almost all cations and ions found in the environment and waste water samples. The determination of Pb (II) in tap and synthetic seawater samples was also carried out by the present method. The results were satisfactorily comparable so that the applicability of the proposed method was confirmed to the real samples. © the author(s), publisher and licensee Libertas Academica Ltd.

Item Type: Article
Creators:
CreatorsEmail
Shiri, S.UNSPECIFIED
Delpisheh, A.UNSPECIFIED
Haeri, A.UNSPECIFIED
Poornajaf, A.UNSPECIFIED
Golzadeh, B.UNSPECIFIED
Shiri, S.UNSPECIFIED
Keywords: Alizarin yellow Flotation-extraction Lead Spectrophotometry
Divisions:
Page Range: pp. 15-20
Journal or Publication Title: Analytical Chemistry Insights
Journal Index: Scopus
Volume: 6
Number: 1
Identification Number: https://doi.org/10.4137/ACI.S5948
ISSN: 11773901 (ISSN)
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/1621

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