世界上形形色色的物质,都是由各种化学元素所组成的。物质的性质除了由组成该物质的元素所决定外,还与组成该物质的元素的量有密切关系。例如,用来制造晶体管的半导体材料中,有时即使存在万分之几或更少的某些杂质,也会严重地影响晶体管的性能。因此,物质的成分分析历来是科学技术界中极为重视的问题,并且迅速地发 All kinds of substances in the world are made up of various chemical elements. The nature of a substance is determined not only by the elements that make up the substance, but also by the amount of the elements that make up the substance. For example, in a semiconductor material used for manufacturing a transistor, even if there is a certain number or less of certain impurities, the performance of the transistor may be seriously affected. Therefore, the analysis of the composition of matter has always been a matter of great importance in the scientific and technological community, and it has been rapidly developed.