Near-infrared detection of flow injection analysis by acoustooptic tunable filter-based spectrophotometry
Near-infrared detection of flow injection analysis by acoustooptic tunable filter-based spectrophotometry
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DOI：
10.1021/ac951025x
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发表时间：
1996-03-15
影响因子：
7.4
通讯作者：
Gao, GH
中科院分区：
文献类型：
--
作者：
Baptista, MS;Tran, CD;Gao, GH
报道了一种基于声光可调谐滤光器（AOTF）的近红外分光光度计的仪器研制及其作为流动注射分析（FIA）检测器的应用。该仪器具有结构紧凑、全固态、灵敏度高、分辨率高、扫描速度快等优点。后一个优点使其特别适合作为FIA的检测器，因为它可以快速记录通过FIA现在单元的混合物的整个近红外吸收光谱。随后用多元校正方法对记录的光谱进行处理，使得首次将FIA用于诸如同时测定乙醇中痕量水和苯的应用成为可能。由于所有有机化合物在近红外区吸收光，因此这种基于AOTF的近红外检测器可以用作FIA的通用检测器;因此，FIA技术的应用可以扩展到其他领域，这是不可能的。
The instrumentation development of a near-infrared (near-IR) spectrophotometer based on an acoustooptic tunable filter (AOTF) and its application as a detector for now injection analysis (FIA) are reported, In addition to being compact and all solid state, this AOTF-based instrument is very sensitive, has high resolution, and can be rapidly scanned. The latter advantage make it uniquely suited as a detector for FIA, in that it can rapidly record the whole near-IR absorption spectrum of a mixture passing through the FIA now cell. Subsequent treatment of the recorded spectra with multivariate calibration methods makes it possible to use the FIA, for the first time, for such applications as the simultaneous determination of trace amounts of water and benzene in ethanol, Because all organic compounds absorb light in the near-infrared region, this AOTF-based near-IR detector can serve as a universal detector for FIA; as a consequence, applications of the FIA techniques can be expanded to other areas which are not possible otherwise.