摘要
本实验对传统的二乙基二硫代氨基甲酸钠测定铜含量的方法进行了改进,采用示差光度技术使测量方法的线性范围向下扩展,在0.5～10.0μg铜/10ml萃取液的范围内呈现良好的线性关系,相关系数R=0.9996。用于大米中铜含量的测定,回收率96%～103%。
In this research, the conventional determination method of trace copper by sodium diethyldithiocarbamate spectrophotometry was improved. Using the differential spectrophotometry, the linear range was downward extended. The calibration curve was linear in the range of 0.5～10.0 μg /10 ml （ R =0.9996）. In determination of content of copper in rice, the recovery rate was about 96%～103%.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2007年第10期458-460,共3页
Food Science
基金
河南省重点科技攻关项目(072102110007)
关键词
示差光度法
二乙基二硫代氨基甲酸钠
铜
differential spectrophotometry
sodium diethyldithiocarbamate
copper
