Extraction Pb(II) by (Z)-Furan-2-carbaldehyde Thiosemicarbazone adsorbed on surfactant coated alumina before determination by FAAS

Determination of lead

Authors

  • R. Ghiasi Department of Chemistry, East Tehran (Ghiam Dasht) Branch Islamic Azad University, Tehran, Iran
  • S. Behrouzinia Laser and Optics Research School, Nuclear Science and Technology Research School, Atomic Energy Organization of Iran, Tehran, Iran

DOI:

https://doi.org/10.14331/ijfps.2011.330019

Keywords:

Determination of lead, Pre-concentration, (Z)-Furan-2-carbaldehyde Thiosemicarbazone (I), FAAS

Abstract

A simple, highly sensitive, accurate and selective method for determination of trace amounts of Pb(II) in water samples is presented. The method is based on selective chelation of Pb(II) on surfactant coated alumina, modified with a Schiff’s base (Z)-Furan-2-carbaldehyde Thiosemicarbazone (I). The retained ions were then eluted with 4 ml of 4 M nitric acid and determined by flame atomic absorption spectrometry(FAAS) at 283.3 for Pb. The influence of flow rates of sample and eluent solutions, pH, breakthrough volume, effect of foreign ions on chelation and recovery were investigated. 1.5 g of surfactant coated alumina adsorbs 40 mg of the Schiff’s base which in turn can retain 15.0±0.9mg of each of the two ions. The limit of detection (3σ) for Pb(II) was found to be 5.57 ng l -1. The enrichment factor for both ions is 100. The mentioned method was successfully applied on determination of lead in different water samples. The ions were also speciated by means of three columns system.

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Author Biography

S. Behrouzinia, Laser and Optics Research School, Nuclear Science and Technology Research School, Atomic Energy Organization of Iran, Tehran, Iran

 

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Published

2011-12-31

Issue

Vol. 1 No. 4 (2011): IJFPS

Section

ORIGINAL ARTICLES

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