牛奶中微量硫氰酸钠含量的检测  

Determination of Trace Sodium Thiocyanate in Milk

作　　者：李富兰[1] 

机构地区：[1]四川理工学院材料与化学工程学院,四川自贡643000

出　　处：《贵州农业科学》2015年第6期184-186,共3页Guizhou Agricultural Sciences

摘　　要：为快速、简便的测定牛奶中硫氰酸,保证牛奶的质量,采用硫酸铁铵分光光度法测定牛奶中硫氰酸钠的含量。结果表明：硫氰酸钠含量在0～16.00μg/mL,服从朗伯!比耳定律,该络合物在462nm处具有最大吸光度,相关系数r=0.999 8。加标回收率在99.0%～101.8%,方法操作简单、结果准确。To determine sodium thiocyanate in milk quickly and easily,guard the milk quality,the ammonium ferric sulfate-spectrophotometric method was employed to detect the content of sodium thiocyanate in milk.Results：Sodium thiocyanate content ranged from 0to 16.00μg/mL,obeying the Lambert-Beer law.The maximum absorption of the complex was at 462 nm with correlation coefficient of 0.9998.The recovery rate was 99.0%～ 101.8%.This method is simple with accurate results.

关 键 词：牛奶 硫氰酸钠 硫酸铁铵 分光光度法 

分 类 号：TQ937[化学工程]