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Performance of a near infrared spectrometer equipped with an autosampling accessory

机译:配备自动采样附件的近红外光谱仪的性能

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The performance of a Fourier-transform near infrared (FT-NIR) spectrometer equipped with an autosampling accessory (AutoSamplIR) using disposable vials with uncontrolled pathlength has been compared with the performance of an FT-NIR equipped with a manual vial sampling accessory using a reusable cell with calibrated pathlength. The effect of different parameters such as the signal-to-noise ratio, the stability of the purge and the linearity of absorbance have been evaluated by means of the NIR predictions of two physico-chemical properties of interest for gasoils, i.e the wt% of hydrogen and the cetane number (CN). It has been shown that an FT-NIR with the autosampling accessory can be used advantageously at low cost for quick and precise analyses of small amounts of sample.
机译:已将配备具有自动采样附件(AutoSamplIR)的傅立叶变换近红外(FT-NIR)光谱仪的性能与使用不受控制的光程长度的一次性样品瓶的性能与配备了可重复使用的手动样品瓶采样附件的FT-NIR的性能进行了比较具有校准路径长度的像元。通过对汽油感兴趣的两种理化性质的NIR预测,即信噪比,吹扫的稳定性和吸光度的线性,评估了不同参数的影响,例如氢和十六烷值(CN)。已经表明,带有自动采样附件的FT-NIR可以有利地以低成本使用,以快速,精确地分析少量样品。

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