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Delayed chemiluminescence of luminol/ascorbic acid system triggered by ultrasound
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DOI：10.1016/j.ultsonch.2026.107883.png)
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Abstract
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• A novel ultrasound-triggered delayed chemiluminescence phenomenon is reported for the luminol–ascorbic acid system. • The delay duration and emission intensity are linearly correlated with ascorbic acid concentration down to the nanomolar range. • Cobalt and carbonate ions play essential catalytic roles in enhancing and sustaining the delayed emission • The method demonstrates high selectivity for ascorbic acid and has been successfully applied to the analysis of real samples from beverages and supplements.
Keywords:
Delayed chemiluminescence
Sonochemiluminescence
Luminol
Ascorbic acid
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