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首页> 外文期刊>Applied Spectroscopy >Self-Oriented Glucose-Modified Infrared Sensor for the Detection of Compounds Bearing Carboxylic Acid Groups
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Self-Oriented Glucose-Modified Infrared Sensor for the Detection of Compounds Bearing Carboxylic Acid Groups

机译：自定向葡萄糖修饰的红外传感器，用于检测带有羧酸基团的化合物

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摘要

To explore the interactions of self-oriented glucose toward organic species, we prepared a glucose-modified infrared (IR) chemical sensor and examined its performance in the detection of compounds bearing carboxylic acid functional groups. Using a two-layer modification method, we chemically bonded glucose to the surface of an IR sensing element. The immobilized glucose moieties exhibited the ability to assemble into a chemical form similar to that of the cyclodextrins (CDs) such that they could trap targeted molecules. This modified sensing phase displayed an analysis capability similar to that of CDs, but without the problems encountered attempting to maintain the activity of the latter. From a systematic examination of three classes of structural analogs of acids, we found that the behavior of the glucose-modified sensing phase was similar to that of a CD-modified sensing phase. In terms of quantitative detection, we obtained an average regression coefficient of approximately 0.996 for the analytical signals of the examined compounds at concentrations less than 20 mg/L. The linearity of the standard curves was related to the detection time: the shorter the detection time, the greater the linearity. Defined as three times the noise level, we obtained detection limits of a few hundred parts per billion (μg/L) for the determination of high-polarity compounds using our glucose-modified sensing phase.
机译：为了探索自我导向的葡萄糖与有机物之间的相互作用，我们制备了葡萄糖修饰的红外（IR）化学传感器，并检查了其在检测带有羧酸官能团的化合物中的性能。使用两层修饰方法，我们将葡萄糖化学键合到红外传感元件的表面。固定的葡萄糖部分表现出组装成类似于环糊精（CD）的化学形式的能力，从而它们可以捕获目标分子。修改后的感测阶段显示了与CD相似的分析能力，但是没有尝试保持CD的活动所遇到的问题。通过对三类酸的结构类似物的系统检查，我们发现葡萄糖修饰的感应相的行为与CD修饰的感应相的行为相似。在定量检测方面，对于浓度低于20 mg / L的被检化合物的分析信号，我们获得的平均回归系数约为0.996。标准曲线的线性与检测时间有关：检测时间越短，线性越大。定义为噪声水平的三倍，我们获得了使用葡萄糖修饰的感测相测定高极性化合物的十亿分之几十的检测限。

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    《Applied Spectroscopy》 |2008年第1期|38-45|共8页
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