A formula is deduced to calculate the contents (absolute or relative) of some elements in a sample by internalstandard method with the aid of relative sensitivity factors.
具体给出了用相对灵敏度因子的内标法确定样品中各元素(绝对或相对)含量的计算公式。
2
The importance of analysing the internal quality of PET chip using national standard and standard sample were expounded.
阐明了应用国标和标样对分析聚酯切片产品的内在质量的重要意义。
3
After the sample is analyzed, the response to the unknown concentration is compared to the internalstandard and an accurate measurement of the concentration of the substance of interest is obtained.