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近几年来,导数分光光度法在无机物分析方面已做了一些工作,目前对宽吸收带体系应用导数技术的研究尚少见.这是由于宽吸收带体系经高阶求导后,信噪比明显下降,而低阶导数的分辨率又不高.本文探讨导数技术应用于宽吸收带体系的可能性及一般规律.一个高斯型谱带n次求导后,得到n个零点.这就为在低阶导数条件下消除干扰提供了条件,即在导数值的测量方法上寻找可能性.如果干扰组分的导数吸收曲线和基线相交处的波长恰好等于或接近待
In recent years, derivative spectrophotometry in inorganic analysis has done some work, the wide absorption band system for the application of derivative technology is still rare, this is due to the wide absorption band system after high-order derivative, the signal to noise ratio The resolution of low-order derivative is not high.This paper discusses the possibility and general law of the derivative technique applied to the system of wide absorption.After obtaining a Gaussian spectrum n times, we get n zero points The elimination of interference under low-order derivatives provides the condition that the possibility of measuring the derivative value is sought, and if the wavelength at which the derivative absorption curve of the interfering component intersects the baseline exactly equals or approaches