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前言 化学分析的两大分支是容量法和光度法。光度法在仪器化道路上成功地经历了目视比色——比色计比色—分光光度计比色这一发展过程。当今,结构复杂、电脑控制的双光路宽波段分光度计已普遍采用。光度法在化学实验室担负着大批中低含量的分析任务。 作为样品主成份的经典分析方法—容量法(也称滴定分析法),一直是化学实验室最基本和最重要的分析手段。自容量法出现以来,无效的分析工作者,为了寻找氧化剂、还原剂、沉淀剂、络合剂、各种指示剂、缓冲溶液、掩蔽剂等,作了巨大的努力,得到的成果可
Foreword The two major branches of chemical analysis are the volumetric and photometric methods. Photometric method in the instrumentation of the road successfully underwent visual colorimetric - colorimetric colorimetry - spectrophotometer colorimetric development of this process. Today, the complex structure, computer-controlled dual optical broadband spectrophotometer has been widely used. Photometric method in the chemical laboratory is responsible for a large number of low-level analysis tasks. As the main component of the sample analysis of the classic method - the volume method (also known as titration), has always been the most basic laboratory chemistry and the most important means of analysis. Since the appearance of the volumetric method, ineffective analysts have made tremendous efforts to find oxidants, reducing agents, precipitating agents, complexing agents, various indicators, buffer solutions, masking agents and the like, and the results obtained can be