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Conference on Environmental Pollution and Public Health (CEPPH 2010 E-BOOK)

Wuhan,China,China,9.10-9.12,2010

ISBN: 978-1-935068-16-7 Scientific Research Publishing, USA

E-Book 1502pp Pub. Date: October 2010

Category: Engineering

Price: $80

Title: Determination of Bromate and Bromide in Flour by Ion Chromatography Coupled with Acclerated Solvent Extraction Technique
Source: Conference on Environmental Pollution and Public Health (CEPPH 2010 E-BOOK) (pp 721-724)
Author(s): Huili Lu, Department of Food Science and Engineering, College of Biological Sciences and Technology,Beijing Forestry University, Beijing, China, 100083
Yanwen Wu, Beijing Center for Physical and Chemical Analysis, Beijing, China, 100089
Jie Ouyang, Department of Food Science and Engineering, College of Biological Sciences and Technology,Beijing Forestry University, Beijing, China, 100083
Hui You, Beijing Center for Physical and Chemical Analysis, Beijing, China, 100089
Lingling Liu, Department of Food Science and Engineering, College of Biological Sciences and Technology,Beijing Forestry University, Beijing, China, 100083
Abstract: A method for the determination of bromate and bromide in flour was developed by ion chromatography (IC) coupled with accelerated solvent extraction (ASE). The bromate and bromide were extracted with ultra-pure water and quartz sand as a base material at 100℃ and 10.0 MPa. The determination was performed in a Shodex IC SI-52 4E (250 mm×4.0 mm) analysis column (45℃) by 300 μL injection and using 3.6 mM Na2CO3 as a mobile phase with the flow rate of 0.7 mL/min. A good linearity of binary mixtures of bromate and bromide was obtained within the range of 1.00~6.00 mg/kg (r>0.9995). The limit of detection for the method was 2.1 μg/kg. The average recoveries of both bromate and bromide were ranged from 94.06%~102.77% with the relative standard deviations of less than 3% (n=6). This method was rapid, accurate, simple and able to meet the testing requirements.
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