光声光谱法的原理及其应用

• 作 者: 柳正良 李修
• 机 构: 第二军医大学药学系,第二军医大学药学系
• 出 处: 国外医学.药学分册
• 发表日期: 1987年04期
• 关键词: 光声光谱法 入射光强度 光声光谱仪 光声效应 分子光谱学 八十年代 透射光 非辐射跃迁 光声信号 傅里叶变换红外

光声光谱法(Photoacoustic Spectroscopy;PAS)是早于1880年就发现、二十世纪七十年代初期复活、至八十年代才获得重大发展的一种新技术,目前已成为分子光谱学的一个重要分支。它具有传统吸收光谱法无可比拟的如下几个特点:(1)灵敏度高,在一般的吸收光谱中测定的是透射光和入射光强度的比值,当吸收光强度和入射光强度的比值较小时,对弱吸收样品就可能造成相当大的误差或不能测定;而

Photoacoustic spectroscopy (PAS) is a new technique discovered early in 1880 and revived in the early 1970s and not significantly developed until the 1980s, and has now become an important molecular spectroscopy Branch. It has the traditional absorption spectrometry unparalleled the following characteristics: (1) high sensitivity, measured in the general absorption spectrum is the ratio of transmitted light and incident light intensity, when the ratio of absorbed light intensity and incident light intensity Hour, there may be considerable error or undetermined measurement of weakly absorbed samples;