AOTF在光谱分析中的应用研究2.自装AOTF可见分光光度计的应用

本文报道了自装AOTF可见分光光度计的基本特性。采用镨钕滤光片和氧化钬滤光片的特征吸收峰进行波长校正，经四次多项式拟合后峰位置误差小于0.7nm。与商品仪器（UV1100分光光度计）相比，自装AOTF可见分光光度计的扫描速度大大加快，而分辨率与AOTF本身的质量有关。文中给出了硫酸铜溶液和茜素红溶液的扫描镨图及其校准曲线，其相关系数分别是0.9991和0.9990，这表明自装AOTF分光光度计的性能是可靠的。

Application of AOTF in Spectral Analysis 2.Application of Self-constructed Visible AOTF Spectrophotometer

The performances of a self-constructed visible AOTF spectrophotometer are presented. The wavelength calibration of AOTF1 and AOTF2 are performed with a didymium glass using a fourth-order polynomial curve fitting method. The absolute error of the peak position is usually less than 0.7nm. Compared with the commercial UV1100 spectrophotometer, the scanning speed of the AOTF spectrophotometer is much more faster, but the resolution depends on the quality of AOTF. The absorption spectra and the calibration curves of copper sulfate and alizarin red obtained with AOTF1(Institute for Silicate,Shanghai China) and AOTF2 (Brimrose U.S.A)respectively are presented. Their corresponding correlation coefficients of the calibration curves are 0.9991 and 0.9990 respectively. Preliminary results show that the self-constructed AOTF spectrophotometer is feasible.