摘要
本文依据《食品安全国家标准 味精中麸氨酸钠(谷氨酸钠)的测定》(GB 5009.43—2016)中第二法旋光法,通过分析检验过程中的影响因素,对用旋光法测定味精中谷氨酸钠含量进行不确定度评定。结果表明,自动旋光仪测定味精中谷氨酸钠含量的不确定度结果报告为(99.3±0.24)%,k=2。对不确定度影响因素进行分析评定,可减少实验误差,提高测定结果准确性。
In this paper,based on GB 5009.43—2016 second method of optical polarimetry,by analyzing the influencing factors in the inspection process,the uncertainty of the determination of sodium glutamate content in monosodium glutamate by optical polarimetry is evaluated.The results show that the uncertainty of the content of sodium glutamate in monosodium glutamate determined by automatic polarimeter is reported as (99.3±0.24)%,k=2.The analysis and evaluation of the factors affecting the uncertainty can reduce the experimental error and improve the accuracy of the measurement results.
作者
张涵璐
晁盛
ZHANG Hanlu;CHAO Sheng(Beijing Food Safety Monitoring and Risk Assessment Center(Beijing Food Inspection Institute),Beijing 100094,China)
出处
《食品安全导刊》
2022年第5期102-104,111,共4页
China Food Safety Magazine
关键词
谷氨酸钠
自动旋光仪
不确定度
sodium glutamate
automatic polarimeter
uncertainty
