Uncertainty Evaluation of Aluminium Content in Flour-made Foodstuffs
Dong Jing · Anhui Chemical Industry · 2011
This paper is to evaluate,by adopting Methods of Food Hygienic Analysis-Physical and Chemical Section GB/T 5009.182-2003,the uncertainty of Aluminium content in flour-made foodstuffs.It is calculated according to the mathematical model based on the theories of measuring uncertainty.Working curve fitting can be ignored,for it has little effect on the measurement of uncertainty.When Aluminium content in the sample reaches 4.69mg/kg,its exterior uncertainty is 0.14 mg/kg,the measurement result being Al(mg/kg)=4.69±0.14,k=2.