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分析化学的任务是对样品的组成、结构进行分析并提供准确的数据。由于分析误差是客观存在的,而且贯穿于整个分析过程的始终,如取样、加工制备、称样、溶(熔)解、分离、测定、计算等等,每一环节都可能引入误差,因此探求各个环节中误差产生的原因和规律,了解缩小或控制误差的方法,使分析结果尽可能与试样中被测成分的真值相符,无疑是十分重要的。
The task of analytical chemistry is to analyze the composition and structure of the sample and provide accurate data. As the analytical error is objective, and throughout the entire analysis process, such as sampling, processing and preparation, weighed, dissolved (melt) solution, separation, determination, calculation and so on, each link may introduce errors, so to explore It is undoubtedly very important to understand the reason and law of errors in each link, to understand the method of reducing or controlling errors, to make the analysis result accord with the true value of the tested components in the sample as much as possible.