Fibre coupled micro-light emitting diode array light source with integrated band-pass filter for fluorescence detection in miniaturised analytical systems

Vaculovičová, Markéta; Akther, Mahbub; Maaskant, Pleun; Brabazon, Dermot; Macka, Mirek

doi:10.1016/j.aca.2015.02.044

Cited by 5 publications

(1 citation statement)

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“…The S/N was determined from the peak height divided by the standard deviation of the baseline noise ( n = 7). As shown in Table , LODs are in the range of 7.7–109.0 nM (S/N = 3) under the optimized conditions, giving similar or higher sensitivity than those reported previously .…”

Section: Resultssupporting

confidence: 76%

A simple and compact fluorescence detection system for capillary electrophoresis and its application to food analysis

Zhai

Yuan

et al. 2015

Electrophoresis

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A novel fluorescence detection system for CE was described and evaluated. Two miniature laser pointers were used as the excitation source. A Y-style optical fiber was used to transmit the excitation light and a four-branch optical fiber was used to collect the fluorescence. The optical fiber and optical filter were imported into a photomultiplier tube without any extra fixing device. A simplified PDMS detection cell was designed with guide channels through which the optical fibers were easily aligned to the detection window of separation capillary. According to different requirements, laser pointers and different filters were selected by simple switching and replacement. The fluorescence from four different directions was collected at the same detecting point. Thus, the sensitivity was enhanced without peak broadening. The fluorescence detection system was simple, compact, low-cost, and highly sensitive, with its functionality demonstrated by the separation and determination of red dyes and fluorescent whitening agents. The detection limit of rhodamine 6G was 7.7 nM (S/N = 3). The system was further applied to determine illegal food dyes. The CE system is potentially eligible for food safety analysis.

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Section: Resultssupporting

confidence: 76%