离子色谱法测定白砂糖中的二氧化硫(下)  

Determination of Sulfite in White Granulated Sugar by Chromatography of Ions

作　　者：余娟[1] 卢家炯[2] 郭剑雄[1] 闵亚光[2] 李海乔[1] 

机构地区：[1]广州甘蔗糖业研究所广东省甘蔗改良与生物炼制重点实验室国家糖业质量监督检验中心,广州510316 [2]广西大学轻工与食品工程学院,南宁530004

出　　处：《甘蔗糖业》2009年第5期45-46,共2页Sugarcane and Canesugar

摘　　要：2实验结果2.1标准曲线与检出限离子色谱测定白砂糖中二氧化硫时,将白砂糖样品稀释10倍,结合标准曲线方程y=0.1469x,得出最终计算公式为:A new method was established to determine sulfur dioxide in white granulated sugar by chromatography of ions. IonPac AS11 as splitter, NaOH as eluent, gradient elution, suppressed conductivity detection, qualitative analysis with retaining time, quantitative analysis with external reference method. This method had good linearity (r=0.9994) for the concentration of sulfur dioxide in white granulated sugar ranged from 0.10～50 mg/kg. RSD of samples ranged from 0.9%～2.1%, the average recoveries of samples were ...

关 键 词：WHITE granulated SUGAR CHROMATOGRAPHY of ions SULFUR dioxide Suppressed CONDUCTIVITY detection 

分 类 号：TS247[轻工技术与工程—制糖工程]