环境光对谷氨酸钠溶液近红外激光拉曼光谱的影响

Studies of Influences of Environmental Light on Near-Infrared Laser Raman Spectra of Sodium Glutamic Acid Solution

探讨了环境光,对谷氨酸钠溶液的近红外激光拉曼光谱的影响。研究表明不同的环境光,自然光和室内荧光灯光,均会对近红外拉曼光谱产生不同的干扰效应,存在着特征谱峰,倒峰或尖锐正峰。虽干扰表现不同,但都有影响,不能忽略。建议在进行溶液近红外激光拉曼光谱检测时,须在暗室或暗罩中进行,以完全隔离环境光的影响。

The near-infrared laser Raman spectra influenced by environmemal light were studied in the determination of sodium glutarnie acid solution. The environmental lights included natural light from outdoors and light from room fluorescent lamp. The results show that different influences on near infrared laser Raman spectra of sodium glutamic acid solution can be produced in different environmental light. There were some characteristic spectral lines, down peaks or sharpened peaks. These influences cannot be ignored. It is suggested that the determination of solution by near-infrared laser Raman spectra is carried out in dark- room or in dark cover to completely isolates the influences of the environment lights.