给你一个CE2002-657的原文,上面有具体的关于重复性的计算公式,只不过这个只是计算出来了R,你要自己根据经典算法反推iR是多少。 The inter-laboratory coefficient of variation (CV) for the repeated analysis of a reference or fortified material, under reproducibility conditions, shall not exceed the level calculated by the Horwitz Equation. The equation is: CV = 2(1 – 0,5 log C) where C is the mass fraction expressed as a power (exponent) of 10 (e.g. 1 mg/g = 10-3). Examples are shown in the table 3. Table 3 Examples for reproducibility CVs for quantitative methods at a range of analyte mass fractions 1 μg/kg (*) 10 μg/kg (*) 100 μg/kg 23 1 000 μg/kg (1 mg/kg) 16 (*) For mass fractions lower than 100 μg/kg the application of the Horwitz Equation gives unacceptable high values. Therefore, the CVs for concentrations lower than 100 μg/kg shall be as low as possible. For