组合分析法检测小麦粉中4种非法添加物  

Determination of 4 illegal additives in wheat flour by combination analysis method

作　　者：孙兴权[1] 曾泽[1] 赵景红[1] 王秋艳[1] 张建华 董伟峰[1] 林维宣[1] 

机构地区：[1]辽宁出入境检验检疫局技术中心,辽宁大连116001 [2]中国检验认证集团辽宁有限公司,辽宁大连116001

出　　处：《食品工业科技》2013年第21期305-309,共5页Science and Technology of Food Industry

基　　金：辽宁出入境检验检疫局课题(LK25-2010)

摘　　要：通过将酸碱度测试筛选、鲁米诺化学发光测试、灰分测试,以及灰分的X射线荧光全元素分析(XRF)和X射线晶体衍射分析(XRD)等多种分析测试技术组合运用,建立了小麦粉中过氧化钙、大白粉、石膏粉和滑石粉等4种非法添加物的鉴别与测定方法。试样经酸碱度测试即可基本判断待测物的种类,经鲁米诺发光反应测试其是否具有氧化性,进一步通过灰化富集待测物后,经XRF测试其所含主要元素,最终通过XRD确证待测物结构。根据分析方法和仪器测试灵敏度,确定小麦粉中过氧化钙、大白粉、石膏粉和滑石粉等4种非法添加物的半定量限值分别为0.05%,0.5%,0.5%,2%。该方法操作简单,快速准确,可以根据实际需要进行组合运用分析。A kind of combination analysis method which consists of pH value test, chemiluminescence test of luminol, ash test, X- Ray Fluorescence （XRF） analysis and X- Ray Diffraction （XRD） analysis was developed to detect four kinds of illegal additives, such as calcium peroxide, big white powder （calcium carbonate）, gypsum powder（ calcium sulfate）and talc powder in wheat flour.The species of analytes were judged basically by pH value test,and oxidation characteristics by luminol chemiluminescence reaction test.Before XRF test which provided the main elements in the analytes and XRD test which provided the structure infromation,the samples were enriched through ash test.According to the analysis method and instrument sensitivity,the semi-quantitation limit value of calcium peroxide,calcium carbonate, calcium sulfate and talc in wheat flour was determined as 0.05% ,0.5%, 0.5% ,2% respectively.The method had the advantages of easy operation, rapid and accurate, can be based on actual need to combination analysis.

关 键 词：小麦粉 过氧化钙 碳酸钙 硫酸钙 滑石 

分 类 号：TS211.7[轻工技术与工程—粮食、油脂及植物蛋白工程]