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首页> 外文期刊>CHROMATOGRAPHY >UV Cut-Off Filter of a Photodiode Array Detector Improves the Quantitativity of L-Ascorbic Acid Through Its Photoprotection
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UV Cut-Off Filter of a Photodiode Array Detector Improves the Quantitativity of L-Ascorbic Acid Through Its Photoprotection

机译：光电二极管阵列检测器的UV截止滤波器通过其光保护提高了L-抗坏血酸的定量

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摘要

A photodiode array detector (PDA) is frequently utilized as a detector in high-performance liquid chromatography (HPLC) system for a detection of various compounds. A PDA emits a light of a wide range wavelength including ultraviolet light (UV) which has a possibility to induce photodegradation of analyzed compounds. If so, target compounds might be degraded when analyzed in this HPLC system. Therefore, photoprotection during HPLC analysis is required for the accurate analysis. In this study, the protective effect of a UV cut-off filter, which can cut off UV especially at shorter wavelength (< 240 nm), on the quantitativity of a photodegradable compound L-ascorbic acid (AA) was examined. A UV cut-off filter prevents AA from photodegradation, followed by the improvement of several parameters of a calibration curve. Furthermore, this protective potency was significant in the case that photodegradability of AA was enhanced with the conditions such as a small injection volume and a low flow rate. This study strongly suggests that the UV cut-off filter is a useful equipment when analyzing photodegradable compounds.
机译：光电二极管阵列检测器（PDA）经常用作高性能液相色谱（HPLC）系统中的检测器，用于检测各种化合物。 PDA发出宽范围波长的光，包括紫外线（UV），其能够诱导分析化合物的光降解。如果是，则在该HPLC系统中分析时，目标化合物可能会降低。因此，准确分析需要HPLC分析期间的光保护。在该研究中，研究了UV截止过滤器的保护作用，其可以切断UV，特别是在较短的波长（<240nm）上，对光降解的化合物L-抗坏血酸（AA）的定量进行缩短。 UV截止过滤器可防止AA光降解，然后改善校准曲线的若干参数。此外，在通过诸如小的注射体积的条件和低流速的条件增强AA的光降低性，这种保护效力是显着的。本研究强烈建议在分析光降解的化合物时，UV截止过滤器是一种有用的设备。

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