摘要
依照GB 5009.36—2016食品中氰化物的测定,采用分光光度法测定配制酒中氰化物含量。为了准确测定配制酒中氰化物含量,对拐枣酒氰化物的不确定度进行评定,评定过程中的不确定度分量主要来源包括测量的重复性、试样量取体积、定容体积、标准溶液浓度、标准曲线拟合和酒精度折算。经评定配制酒(拐枣酒)中氰化物的不确定度结果为X=2.0±0.02 mg/L;k=2,则扩展不确定度U=0.02 mg/L。
According to the method of national standard GB 5009.36—2016 Food Safety National Standard for Determination of Cyanide in Food,the determination of cyanide content in blended wine was evaluated by spectrophotometry.The main sources of uncertainty in evaluation process were the measurement repeatability,sampling volume,sample constant volume,standard solution series,standard curve fitting,alcoholicity conversion.The uncertainty of cyanide in blended wine was evaluated as X=2.0±0.02 mg/L;k=2.The relative extended uncertainty of cyanide determination was U=0.02 mg/L.
作者
徐瑶
石旭东
同瑞婷
张巧莹
白显茗
XU Yao;SHI Xudong;TONG Ruiting;ZHANG Qiaoying;BAI Xianming(Agricultural and Food Industry,Shaanxi Provincial Product Quality Supervision and Inspection Institute,Xi'an,Shaanxi 710048,China)
出处
《农产品加工》
2021年第15期50-52,55,共4页
Farm Products Processing
关键词
不确定度
氰化物测定
分光光度法
uncertainty
cyanide determination
spectrophotometry
