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Light-Emitting Diodes for Analytical Chemistry

机译:用于分析化学的发光二极管

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Light-emitting diodes (LEDs) are playing increasingly important roles in analytical chemistry, from the final analysis stage to photoreactors for analyte conversion to actual fabrication of and incorporation in microdevices for analytical use. The extremely fast turn-on/off rates of LEDs have made possible simple approaches to fluorescence lifetime measurement. Although they are increasingly being used as detectors, their wavelength selectivity as detectors has rarely been exploited. From their first proposed use for absorbance measurement in 1970, LEDs have been used in analytical chemistry in too many ways to make a comprehensive review possible. Hence, we critically review here the more recent literature on their use in optical detection and measurement systems. Cloudy as our crystal ball may be, we express our views on the future applications of LEDs in analytical chemistry: The horizon will certainly become wider as LEDs in the deep UV with sufficient intensity become available.
机译:发光二极管(LED)在分析化学中扮演着越来越重要的角色,从最后的分析阶段到用于分析物转换的光反应器,再到用于分析用途的微型设备的实际制造和组装。 LED的极高的开/关速度使得荧光寿命测量的简单方法成为可能。尽管它们越来越多地被用作检测器,但作为检测器的波长选择性却很少被利用。从1970年首次提出将其用于吸光度测量的建议以来,LED已经以太多方式用于分析化学中,以使全面审查成为可能。因此,我们在这里严格审查其在光学检测和测量系统中使用的最新文献。正如我们的水晶球可能会阴云密布,我们对LED在分析化学中的未来应用表达了自己的看法:随着在深紫外线中具有足够强度的LED的出现,视野肯定会越来越宽。

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