Adaptive and sensitive fibre-optic fluorimetric transducer for air- and water-borne analytes

Alshammari, Alhulw H.; Kirwa, Abraham Tuwei; Dunbar, Alan D. F.; Grell, Martin

doi:10.1016/j.talanta.2019.02.055

Cited by 4 publications

(3 citation statements)

References 27 publications

(38 reference statements)

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“…A sensitive fluorescent FOCS was described that can detect the nitroaromatic explosive 2,4dinitrotoluene (DNT) both in air and in water. 277 It is making use of the quenching of the fluorescence (with excitation/ emission maxima at 405/488 nm) of a conjugated polymer by DNT. The assay responds to DNT in the concentration range from 56−150 ppb.…”

Section: Analytical Chemistrymentioning

confidence: 99%

Fiber-Optic Chemical Sensors and Biosensors (2015–2019)

2019

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Section: Analytical Chemistrymentioning

confidence: 99%

Fiber-Optic Chemical Sensors and Biosensors (2015–2019)

2019

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“…We quantify Al 3+ in water samples by fluorimetry using dissolved NaMSA. Instead of a conventional spectrofluorimeter, we adopted a fibre-optic fluorimeter with LED excitation and lock-in amplification which has been described previously [19] for solution-based fluorimetry. We establish a limit-of-detection (LoD) for Al 3+ below the potability limit, a high figure-of-merit for the fibre-optic instrument, and quantify Al 3+ in a few example samples using the standard addition method [20].…”

Section: Introductionmentioning

confidence: 99%

“…2gives an overview over our fibre optic lock-in fluorimeter. The instrument is adapted from earlier work[19,23].…”

mentioning

confidence: 99%

Low cost, high sensitivity detection of waterborne Al3+ cations and F− anions via the fluorescence response of a morin derivative dye

Alshammari

Alqahtani

Suah

et al. 2020

Analytica Chimica Acta

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Morin dye is known as a cheap and readily available selective 'off → on' fluorescent sensitiser when immobilised in a phase transfer membrane for the detection of Al 3+ ions. Here, a morin derivative, NaMSA, which readily dissolves in water with good long-term stability is used in conjunction with a fibre optic transducer with lock-in detection to detect Al 3+ in drinking water below the potability limit. The combination of a water soluble dye and the fibre optic transducer require neither membrane preparation nor a fluorescence spectrometer yet still display a high figure-of-merit. The known ability to recover morinbased Al 3+ cation sensors selectively by exposure to fluoride (F-) anions is further developed enabling a complementary sensing of either fluoride anions, or aluminium cations, using the same dye with a sub-micromolar limit-of-detection for both ions. The sensor performance parameters compare favourably to prior reports on both aqueous aluminium and fluoride ion sensing.

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A multifunctional fluorescence sensor for DNT vapor and Fe3+ based on a conjugated polymer

Liu,

Zhang

2024

Dyes and Pigments

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Adaptive and sensitive fibre-optic fluorimetric transducer for air- and water-borne analytes

Cited by 4 publications

References 27 publications

Fiber-Optic Chemical Sensors and Biosensors (2015–2019)

Fiber-Optic Chemical Sensors and Biosensors (2015–2019)

Low cost, high sensitivity detection of waterborne Al3+ cations and F− anions via the fluorescence response of a morin derivative dye

A multifunctional fluorescence sensor for DNT vapor and Fe3+ based on a conjugated polymer

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