方法的精密度通过QC样品来评价,用重复分析QC样品浓度的相对标准偏差(

The precision of the method is evaluated by QC samples, expressed by the relative standard deviation (RSD) of the concentration of QC samples in repeated analysis. <br>Each QC batch run should determine the intra-day precision of the QC sample group (low and high concentration) (23). <br>The inter-day precision (26) is determined by comparing the individual calculated concentration or recovery values ​​of at least two successful QC batch samples. <br>The acceptance criteria for intra-day and inter-day precision are as follows:

The precision of the method was evaluated by QC samples and expressed by the relative standard deviation (RSD) of the concentration of repeated analysis QC samples.<br>The intra day precision (23) of QC sample groups (low and high concentrations) shall be determined for each QC batch run.<br>The diurnal precision (26) is determined by comparing individual calculated concentration or recovery values of samples from at least two successful QC batches.<br>The acceptance criteria for intra day and inter day precision are as follows:

The precision of the method was evaluated by QC samples and expressed by the relative standard deviation (RSD) of repeated analysis of QC sample concentration. Every QC batch run should measure the intra-day precision of QC sample group (low and high concentration) (23). The inter-day precision (26) is determined by comparing the individually calculated concentration or recovery values of samples from at least two successful QC batches. The acceptance criteria of intra-day and inter-day precision are as follows: