二十世纪初,由于物理化学的发展,使分析化学由一门技术变成一门系统的科学。第二次变革是从第二次世界大战后开始,分析化学由经典法向仪器化转换。七十年代的后期开始了第三次大变革。目前,正处于第三次变革的高潮时期,有两个显著的特征:其一,是在分析技术中广泛地采用了电 In the early twentieth century, due to the development of physical chemistry, analytical chemistry turned from a technology into a systematic science. The second change began after the Second World War, and analytical chemistry was transformed from classical instrumentation. The late seventies began the third major change. Currently, at the height of the third revolution, there are two salient features: one is the widespread adoption of electricity in analytical techniques