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在红外吸收光谱微量方法研究中,前人已做了不少工作。为了减少取样量,从制样方法考虑,要尽可能地减小样品在红外光束中的透光面积。从仪器角度考虑,可以使用纵座标放大,光束聚光器和数字累加。国内早期使用的红外分光光度计都是利用光学零点平衡原理制造的,这种仪器在低透过率时响应差。对透过率的微小变化缺乏应有的灵敏度,使微量样品分析受到一定限制。580B型红外分光光度计是电子比率式的,克服了以上两个缺点。若再与计算机联用进行光谱累加,更有利于微量样品的测定。本文试图寻求该仪器测定微量样品的方法,了解测定微量样品达到的水平,并对一些实验现象进行初步讨论。
In the study of trace infrared absorption spectroscopy, many people have done a lot of work. In order to reduce the sample volume, from the sample preparation method, to minimize the sample in the infrared light beam area. From the instrument point of view, you can use the vertical axis magnification, beam condenser and digital accumulation. The early use of domestic infrared spectrophotometer is the use of optical zero balance principle of manufacturing, the instrument response to low transmittance. The lack of sensitivity to small changes in transmittance leads to limited sample analysis. 580B infrared spectrophotometer is electronic ratio, to overcome the above two shortcomings. If combined with the computer for spectral accumulation, more conducive to the determination of trace samples. This article attempts to find ways for the instrument to measure trace amounts of samples, to understand the level of trace samples, and to discuss some of the experimental phenomena.