新型红外测油仪中的光谱视网膜技术

Spectral Retina Technique Used in an IR Oil Content Analyzer

将光谱视网膜技术应用于红外测油领域,研制出一种新的MFA-450型红外测油仪.介绍了所研制的超窄带、高透过率的中红外多波长滤光片和具有较高性能价格比、适合我国国情的红外热释电阵列检测器及相应检测电路和操作软件的开发.该仪器体积小、重量轻、无可动部件、稳定性好;测量精密度高(RSD<1％);灵敏度较现有同类仪器高1个数量级,检出限达到0.02mg/L(油/萃取剂);测量线性范围0.10～120.00mg/L,相关系数R^2>0.999。

Spectral retina is a quite new technique in spectroscopy. It has been employed for the first time to an IR oil content analyzer. The instrument using this technique has a series of merits: compact, pegged (without moving parts) , simple in operation as well as high speed in measurement. In this paper, a Model 450 oil content analyzer based on spectral retina technique is described in details. The results show that the instrument has such excellent analytical performance as a good stability, a high precision (RSD< 1 %), a low detection limits 0.027 mg/L( oil/extractive reagent), a high sensitivity (a faster of 10 improvement compared ) , and a wide linear ranges (103).