Determination of Trace Bromate in Flour and Products by Ion Chromatography
- VernacularTitle:面粉和面制品中痕量溴酸盐的离子色谱测定法
- Author:
Pei-Qin HU
;
Gui-Xun DAI
;
Min XIONG
;
- Publication Type:Journal Article
- Keywords:
Ion chromatography;
Potassium bromated;
Flour
- From:
Journal of Environment and Health
2007;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a method for determination of trace bromate in flour and the products by ion chromatography.Methods Conductance-ion chromatography and Ionpac~R AS9-HC column were employed and 9.0 mmol/L sodium carbonate was used as the eluent,the flow rate was 1.0 ml/min.BrO_3~-in the samples soaked in the purified water was extracted by ultrasonic microwave,the water-soluble macromolecules were removed by ultra filtration cup in the extract,then the direct injection determination was conducted.Results The lowest detection limit was 0.01 mg/L,the quantitative detection limit was 0.03 mg/kg,the relative standard deviation was 0.6%-7.6%,the recovery rate was 97.8%-103.6%.Conclusion This method is simple,rapid,accurate,sensitive and is applicable to the determination of trace bromate in flour and the products.
