Microsphere optical ion sensors based on doped silica gel templates

Xu, Chao; Wyglądacz, Katarzyna; Qin, Yu; Retter, Robert; Bell, Michael V.; Bakker, Eric

doi:10.1016/j.aca.2005.01.008

Cited by 21 publications

(32 citation statements)

References 35 publications

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“…Bulk optodes belong to a newer class of sensors and are usually based on the competitive or cooperative extraction of the analyte ion with protons between the polymeric and aqueous phase [48]. This two-phase sensing mechanism has advantages in reaching a lower detection limit dictated by the thermodynamics ion extraction, and may lead to the mass production of monodisperse ion sensing microbeads that can be flexibly coupled with analytical flow cytometry or optical-fiber based microsensor arrays [49, 50, 51]. The unique ion-sensing capabilities of ISEs and bulk optodes make them very useful for clinical diagnosis, drug analysis and environmental monitoring.…”

Section: Polymers and Methods Used For Ph Measurementsmentioning

confidence: 99%

State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China

Korostynska

Arshak

Gill

et al. 2007

Sensors

161

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Section: Polymers and Methods Used For Ph Measurementsmentioning

confidence: 99%

State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China

Korostynska

Arshak

Gill

et al. 2007

Sensors

161

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show abstract

“…Such microspheres have been utilized for silver and iodide analysis after immobilizing them on the tips of etched optical fibers [85,86]. More importantly, the particles also have been employed for the analysis of sodium, potassium, and calcium in a flow cytometry set-up [83,87,88]. These cytometric studies demonstrate that microsphere optodes are amenable to fluidic manipulation and analysis in a dynamic system much like that encountered in microfluidics.…”

Section: Emerging Directionsmentioning

confidence: 98%

“…Bakker's research group has developed spherical, msized optode particles based on plasticized poly(vinyl chloride) [81,82], silanized silica particles doped with sensing materials [83], and plasticizer-free polymer matrices [84]. Such microspheres have been utilized for silver and iodide analysis after immobilizing them on the tips of etched optical fibers [85,86].…”

Section: Emerging Directionsmentioning

confidence: 99%

Microfluidic ion-sensing devices

Johnson

Gavalas

Daunert

et al. 2008

Analytica Chimica Acta

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“…This shows that pGMA provides high surface area for phosphate detection and increases the chemisensor sensitivity. Microspheres optical chemisensor can reduce sample volume, increase sensitivity, shorten response time and reduce detection limit [16].…”

Section: Figure 2 Surface Morphology Of Microspheres (A) Pgma and (Bmentioning

confidence: 99%

A Fluorescence Phosphate Sensor Based on Poly(glycidyl Methacrylate) Microspheres With Aluminium-Morin

Ahmad

Zaini

Rozi

et al. 2016

MJAS

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The performance of new phosphate sensor was investigated using fluorescence spectrometer in the form of immobilized Almorin on poly(glycidyl methacrylate) (pGMA) microspheres. pGMA microspheres that were synthesized by using suspension photopolymerization exhibited spherical-shaped morphology with diameters from 1.5 to 5.3 μm. The studies were carried out at pH 5 and the ratio of aluminium (III) chloride hexahydrate to morin was 3:1 (v/v). At pH 5, H 2 PO 4 -was measured at 548 nm emission wavelength. The relative fluorescence intensity was inversely proportional to H 2 PO 4 -concentrations. The linear range was observed between 6.6 -58.8 µmol/L with detection limit (LOD) of 0.7 µmol/L. Ion interference study demonstrated that Almorin was highly selective towards H 2 PO 4 -.Keywords: phosphate sensor, polymer microspheres, aluminium-morin, fluorescence Abstrak Prestasi sensor fosfat baru telah dikaji dengan menggunakan spektrometer pendarfluor dalam bentuk Al-morin terpegun pada mikrosfera poli(glisidil metakrilat) (pGMA). Mikrosfera pGMA yang disintesis dengan menggunakan pemfotopolimeran ampaian mempamerkan morfologi berbentuk sfera dengan diameter 1.5 hingga 5.3 µm. Kajian telah dijalankan pada pH 5 dan nisbah aluminium (III) klorida heksahidrat kepada morin adalah 3: 1 (v/v). Pada pH 5, H 2 PO 4 -diukur pada gelombang pancaran 548 nm. Keamatan pendarfluor relatif adalah berkadar songsang dengan kepekatan H 2 PO 4-Julat linear diperhatikan antara 6.6 -58.8 μmol/L dengan had pengesanan (LOD) pada 0.7 μmol/L. Kajian gangguan ion menunjukkan Al-morin adalah sangat selektif kepada H 2 PO 4 -.

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Microsphere optical ion sensors based on doped silica gel templates

Cited by 21 publications

References 35 publications

State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China

State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China

Microfluidic ion-sensing devices

A Fluorescence Phosphate Sensor Based on Poly(glycidyl Methacrylate) Microspheres With Aluminium-Morin

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