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- W2093834207 abstract "Dipicolinic acid (DPA, 2,6-pyridinedicarboxylic acid) is a substance uniquely present in bacterial spores such as that from anthrax ( B. anthracis). It is known that DPA can be detected by the long-lived fluorescence of its terbium chelate; the best limit of detection (LOD) reported thus far using a large benchtop gated fluorescence instrument using a pulsed Xe lamp is 2 nM. We use a novel AlGaN light-emitting diode (LED) fabricated on a sapphire substrate that has peak emission at 291 nm. Although the overlap of the emission band of this LED with the absorption band of Tb-DPA (λ max doublet: 273, 279 nm) is not ideal, we demonstrate that a compact detector based on this LED and an off-the-shelf gated photodetection module can provide an LOD of 0.4 nM, thus providing a basis for convenient early warning detectors." @default.
- W2093834207 created "2016-06-24" @default.
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- W2093834207 date "2004-11-01" @default.
- W2093834207 modified "2023-10-14" @default.
- W2093834207 title "Mid-Ultraviolet Light-Emitting Diode Detects Dipicolinic Acid" @default.
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- W2093834207 doi "https://doi.org/10.1366/0003702042475556" @default.
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