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This paper reports the enhancement of sensitivity of detection for in‐column fiber optic‐induced fluorescence detection system in CE by tapered optical fiber (TOF). Two types of optical fiber, TOF and conventional cylindrical optical fiber (COF), were employed to construct the CE (TOF‐CE and COF‐CE) and were compared for sensitivity to riboflavin (RF). The fluorescence intensities from a RF sample...
A multi‐wavelength LED array was used as an excitation source for in‐column fiber‐optic LED‐induced fluorescence for CE. The light source consisted of a multi‐wavelength LED array consisting of three different LEDs (430, 450 and 480 nm), a focusing lens and a gradient index lens group. The LED beam was collimated and reshaped with the gradient index lens group for coupling the LED light source into...
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