适用于粮食基体中重金属元素快检法的标准样品制备研究  

Preparation of Reference Materials for Heavy Metal Elements' Rapid Detection in Grain Matrix

作　　者：潘传荣[1] 李文辉[1] 许艇[2] 吴军辉[1] 张小松[1] 肖治理[3] 万红艳 葛俊 

机构地区：[1]广东省粮食科学研究所,广州510050 [2]中国农业大学,北京100094 [3]华南农业大学,广州510642 [4]深圳市粮食集团有限公司,广东深圳518055 [5]广州市番禺粮食储备有限公司,广州511400

出　　处：《粮食加工》2016年第2期68-74,共7页Grain Processing

基　　金：广州市民生科技研究;项目编号:2014Y2-00520;广东省科技项目;项目编号为2014B070706001

摘　　要：粮食中有害重金属元素快速检测是行业内迫切需求热点,各机构正积极应对。无论是试剂盒的开发测试和胶体金试纸条法,或者X荧光射线法,均须利用待测元素不同梯度的标准样品定制其内置标准曲线,国家标准物质的制定是一项长期的过程,暂时无法满足多元素的需求。研究采用无机盐浸泡粮食籽粒并采取低含量样品"气态分散稀释"的办法,制备了含铅、镉、砷、硒、铬元素的糙米、小麦和玉米粉状样品。数据表明,糙米、小麦和玉米籽粒浸泡100 h后,烘干磨粉再用未浸泡的低含量样品稀释20倍,各元素实际测定值和浸泡完全吸收理论值的比值分别为0.6、0.51、0.51。Rapid detection of harmful heavy metal elements is an urgent demand in the gain trade,Agencies are actively respond to this demand.Both the reagent kit development and colloidal gold test strip method, or X ray method,they need different concentrations standard sample of the elements to be measured to make Internal standard curve.In fact,the formulation of national standard material is a long-term process, which can not meet the needs of many elements.In this paper, we study the method of using inorganic salt to soak the grain seed and dilute it,Lead, cadmium, arsenic, selenium, chromium, brown rice, wheat and corn powder were prepared.The results show that the ratio of the actual value of each element and the total absorption of the soak is 0.6, 0.51, 0.51,after using the paper＇s method.

关 键 词：粮食 铅 镉 砷 硒 铬 标准样品 

分 类 号：TS210.7[轻工技术与工程—粮食、油脂及植物蛋白工程]