摘要
介绍了不确定度的含义、检测禁用偶氮染料的方法及其测定不确定度的数学模型,阐述了此不确定度的来源,包括样品质量引入的不确定度、定容体积引入的不确定度、标准溶液引入的不确定度、气相色谱-质谱联用仪(GC/MS)定量的误差引入的不确定度以及测试过程随机效应导致的不确定度;并对上述不确定度逐一进行了计算。结论显示,使用黑色棉布作为实验对象,联苯胺检测出的平均值在20.2 mg/kg条件下,合成不确定度为1.74 mg/kg,扩展不确定度为3.48 mg/kg,其中,随机效应引入的不确定度贡献最大为0.069 3 mg/kg。
This paper introduces the meaning of uncertainty degree,the testing method of azo dyes forbidden for textiles and the mathematical model for testing the uncertainty degree of azo dyes,presents the causes of uncertainty degree including the uncertainty degree from sample quality,constant volume,standard solution,quantitative error of gas chromatography-mass spectrometry(GC/MS) and random effect in the testing process,and then calculates all the uncertainty degree.The results show that if taking the black cotton fabric as experimental objects and under the condition of 20.2 mg/kg of average value of benzidine,the synthesis of uncertainty is 1.74 mg/kg and the extended uncertainty is 3.48 mg/kg,among of which the uncertainty from random effect makes the biggest contribution of 0.069 3.
出处
《针织工业》
2011年第11期58-60,72,共3页
Knitting Industries
