Journal of Food Measurement and Characterization, Volume (7), No (2), Year (2013-6) , Pages (75-80)

Title : ( Development of vapor generation combined with potentiometric detection for determination of sulfite in beverages )

Authors: Mohammad Hossein Arbab Zavar , Glamhossein Ronagi , SOMAYEH RAJABZADEH , Narjes Ashraf ,

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Abstract

This paper describes a simple, sensitive and cost effective method developed for determination of sulfite in beverages. The procedure is based on chemical vapor generation of hydrogen sulfide, collection of the vapor in an alkaline solution, and then potentiometric determination of the sulfide using a commercial sulfide selective electrode. The influential parameters on analytical performance such as concentration of reagents, flow rate of carrier gas, reaction temperature and gas collection time are evaluated and discussed. In the optimum conditions, the method was linear in the range of 2–25 lg mL-1 of sulfite with a detection limit of 0.7 lg mL-1. The relative standard deviation of the method was 1.2 % for five replicate experiments at 10 lg mL-1 concentration level. The method was successfully applied for determination of sulfite in different beverages with the relative recoveries between 92.2 and 96.2 %. The proposed method can be applied for quality control and consumer safety in food and beverages industrial plants.

Keywords

Beverages; Sulfite; Vapor generation; Potentiometric determination
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@article{paperid:1038644,
author = {Arbab Zavar, Mohammad Hossein and Ronagi, Glamhossein and RAJABZADEH, SOMAYEH and Ashraf, Narjes},
title = {Development of vapor generation combined with potentiometric detection for determination of sulfite in beverages},
journal = {Journal of Food Measurement and Characterization},
year = {2013},
volume = {7},
number = {2},
month = {June},
issn = {2193-4126},
pages = {75--80},
numpages = {5},
keywords = {Beverages; Sulfite; Vapor generation; Potentiometric determination},
}

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%0 Journal Article
%T Development of vapor generation combined with potentiometric detection for determination of sulfite in beverages
%A Arbab Zavar, Mohammad Hossein
%A Ronagi, Glamhossein
%A RAJABZADEH, SOMAYEH
%A Ashraf, Narjes
%J Journal of Food Measurement and Characterization
%@ 2193-4126
%D 2013

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