EDTA滴定法测定牛奶包装中碳酸钙的迁移  

Migration of Nano-CaCO_3 in Milk Plastic Bag by EDTA Titration Method

作　　者：马少华[1] 秦志伟[1] 卢金[1] MA Shao-hua;QIN Zhi-wei;LU Jin(Ningbo College of Health Sciences,Ningbo 315100,China)

机构地区：[1]宁波卫生职业技术学院,浙江宁波315100

出　　处：《广州化学》2018年第6期68-71,共4页Guangzhou Chemistry

基　　金：宁波自然科学基金项目(2016A610205);宁波健康养老协同创新中心项目(NBYL201704)

摘　　要：根据GB/T 5009.92-2016,以水、20%乙醇、4%乙酸和正己烷作为食品模拟液,把牛奶塑料包装袋装入食品模拟液,以时间和温度为变量,蒸干浸泡后的模拟液后消解定容,然后以钙红作为指示剂,用EDTA滴定检测迁移出的碳酸钙的浓度。结果表明,牛奶塑料包装袋中的碳酸钙在不同的模拟液体中的迁移量与温度和时间的变化成正比。The migration character of Nano-CaCO3in milk plastic bag was investigated by simulate testing in four food simulants including water,4%acetic acids,20%alcohol and n-hexane.The amount of the migrated CaCO3was determined by titration method with calcium red indicator.The results showed the amount of CaCO3migrated increased gradually with increasing the migration temperature and time in all food simulants,and the migration in4%acetic acid was largest and least in water.

关 键 词：纳米钙 食品模拟物 EDTA 塑料牛奶包装袋 迁移 

分 类 号：T317.2[一般工业技术]