食品理化检测实验室的方法验证

Method Verification for the Chemical Testing of Food in Laboratory

研究食品理化检测实验室实施方法验证的方法。在采用新的标准方法以前,实验室是否进行方法验证、方法验证的过程是否符合相关规范的要求,这些环节都对检测结果影响重大,直接影响检测数据的准确性和可靠性。对于检验检测机构来说,方法验证是实验室认可、资质认定及扩项时必须考查的重要内容。从方法验证的重要性出发,针对食品理化检测实验室日常检测过程,理论结合实践,对影响实验室方法验证的线性及标准曲线、检出限、定量限、正确度、精密度等技术参数要素进行分析和阐述,讨论相关环节存在的问题,提出对策,为实验室对新的标准方法实施方法验证提供参考,也可参照用以验证非标准方法的适用性。

Aim at studying the method for verifying the implementation method of chemical testing of food in laboratory.Previous to the adoption of the new standard method, whether the laboratory has carried out method verification and whether the process of method verification meets the requirements of relevant specifications have a significant impact on the test results and directly affect the accuracy and reliability of test data. For inspection and testing institutions, method verification is an important content that must be examined in laboratory accreditation, qualification recognition and expansion items.From the view of the importance of method verification, it is designed to analyze and expound the technical parameters and elements that affect method verification in the laboratory, such as linearity and standard curve, limit of detection(LOD), limit of quantification(LOQ), trueness and precision in the daily detection process of chemical testing of food in laboratory, discuss the problems existing in relevant links, and put forward countermeasures by combining theory with practice, so as to provide reference for the laboratory to verify the implementation method of new standard methods and to verify the applicability of non-standard methods with it as a reference.