Published Online: 30 March 2005
Page Count: 5
Liaoning Entry-Exit Inspection and Quarantine Bureau, Dalian, PR
The Open University of Hong Kong, Hong Kong, PR
Statistics, Animal Science, Shenyang Agriculture University, Shenyang, PR
(Received 7 July 2003; accepted 16 December 2004)
This practice provides information for combining standard uncertainties of Fe in metallic silicon determined by the ICP-AES method of the China Inspection and Quarantine (CIQ). The measurand Fe% is determined from other quantities p.q.r. . . through a functional relationship of the model f: Fe% = f(p.q.r . . .). The estimated standard deviation associated with the output estimate Fe%, called combined standard uncertainty and denoted by uc (Fe%), is determined from the estimated standard deviation associated with each larger input estimate (p.q.r . . .). The combined variance u2c (Fe%) can be viewed, by the sensitivity coefficients, as a sum of terms with the minor errors omitted.
Paper ID: JTE12061