The CRM can be used either as the basis of transfering accuracy and arbitration analysis or as a way to calibrate the analytical instruments and verify the methods of analysis.
它可作为量值传递和仲裁分析的依据，同时也可用于校验分析仪器与分析方法的正确性和可靠性。
The analytical methods for OCPs were also studied. Analytical parameters of GC-MS and detection conditions of GC-ECD are optimized, and the performance parameters of the two instruments are compared.
对有机氯农药的检测方法进行研究，实验优化了GC - MS的分析参数以及GC - ECD的检测条件，并将两种仪器的性能参数进行对比。
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