Journal of the Iranian Chemical Society, ( ISI ), Volume (10), No (4), Year (2013-4) , Pages (643-651)

Title : ( Simultaneous derivatization and extraction of iodine from milk samples by hollow fiber liquid-phase microextraction followed by gas chromatography-electron capture detection )

Authors: Ali Sarafraz Yazdi , Samane Raouf yazdinejad , Jeiran Akhoundzadeh ,

Access to full-text not allowed by authors

Citation: BibTeX | EndNote

Abstract A simple, low-cost and sensitive method is demonstrated for derivatization and extraction of iodine from milk samples using hollow fiber liquid-phase microextraction (HF-LPME) and gas chromatography-electron capture detection. Iodide ions are converted to iodine under acidic medium and in the presence of an oxidant. The generated iodine reacted with 3-pentanone in extraction vial to give 2-iodo-3-pentanone and was extracted into 4 lL of 1-octanol located in the lumen of a hollow fiber. Organic solvent was selected using one variable at a time optimization method and the other main factors affecting derivatization and HF-LPME procedures were evaluated using a Taguchi’s L16 (45) orthogonal array. Under optimal conditions, the method showed low limit of detection (0.5 ng mL-1), wide linear range (1–2,000 ng mL-1) with good correlation coefficient (0.9997) and acceptable relative standard deviation (4.6 %, n = 5). Finally, the developed method was successfully applied for determination of iodide in real samples including infant milk formulas and cow milk with reasonable relative recoveries (99.8–110.5 %).

Keywords

, Iodine  Derivatization  Hollow fiber liquidphase microextraction  Gas chromatography, electron capture detection  Milk  Infant
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@article{paperid:1034766,
author = {Sarafraz Yazdi, Ali and Raouf Yazdinejad, Samane and Akhoundzadeh, Jeiran},
title = {Simultaneous derivatization and extraction of iodine from milk samples by hollow fiber liquid-phase microextraction followed by gas chromatography-electron capture detection},
journal = {Journal of the Iranian Chemical Society},
year = {2013},
volume = {10},
number = {4},
month = {April},
issn = {1735-207X},
pages = {643--651},
numpages = {8},
keywords = {Iodine  Derivatization  Hollow fiber liquidphase microextraction  Gas chromatography-electron capture detection  Milk  Infant formula},
}

[Download]

%0 Journal Article
%T Simultaneous derivatization and extraction of iodine from milk samples by hollow fiber liquid-phase microextraction followed by gas chromatography-electron capture detection
%A Sarafraz Yazdi, Ali
%A Raouf Yazdinejad, Samane
%A Akhoundzadeh, Jeiran
%J Journal of the Iranian Chemical Society
%@ 1735-207X
%D 2013

[Download]