摘要
采用聚乙烯醇作表面活性剂,荧光黄作指示剂,该法测定样品中氯化钠变色范围窄,突跃明显。测定7个样品的标准差为0.03～0.14,变异系数为0.12～0.44%。14个样品与 GB 法的测定结果比较基本一致。
Taking polyvinyl alcohol at the surface activator and fluorescein as the in- dicator the improved method showed a narrower range color.Seven samples were determined with a SD of 0.03～0.14 and a CV of 0.12～0.44%.The results of 14 samples compared to that GB method were Consistent.
出处
《四川省卫生管理干部学院学报》
1996年第2期72-73,共2页
Journal of Sichuan Continuing Education College of Medical Sciences
关键词
聚乙烯醇
氯化钠
容量法
硝酸银滴定法
食品
Polyvinyl aecohoe Sodium chloride Volumetry Silver nitrate titration
