近红外光谱仪的研制

A New Infrared Spectrometer With Charge Coupled Device Detector

采用电荷耦合器件(CCD)为检测器研制了近红外光谱仪,该仪器具有结构简单,无可移动光学部件,性能稳定和扫描速度快的特点,主要技术性能指标如重复性,分辨率,波长准确性和噪音都可以满足常规分析的要求。并配有基于化学计量学的分析软件。已在多家炼油厂中应用,其分析结果符合标准分析方法的要求。

A near infrared (NIR) spectrometer with linear charge coupled device (CCD) detector was manufactured. Since no moving part was used in the instrument, the configuration is simpler than the conventional NIR spectrometer. A high scanning rate and a very good reproducibility were obtained. The specification of the instrument , such as resolution, accuracy of wavelengths and S/N were compared with the commercial instruments. A software based on chemometrics developed in this laboratory was used for calibration. The instrument has been used in the laboratories of petrochemical plants for routine analysis of various oil products. The results agreed with the standard samaples.