Temperature compensation of fluorescence intensity-based fiber-optic oxygen sensors using modified Stern–Volmer model

Lo, Yu-Lung; Chu, Chen-Shane; Yur, Jiahn-Piring; Chang, Yuan-Che

doi:10.1016/j.snb.2007.12.010

Cited by 27 publications

(19 citation statements)

References 26 publications

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“…7, it can be observed that the sensitivity to DO is increased when the temperature is increased, likely due to the increase of the mobility of the O-vacancies and, consequently, the ionic conductivity of ceria. [40][41][42] When compared to K SV at room temperature, (184.6 M −1 , 25°C), the percent change in the Stern-Volmer constant from the room temperature value is 2.93%, 9.21%, and 12.68% at 30°C, 40°C, and 50°C, respectively.…”

Section: Temperature Stability Of K Svmentioning

confidence: 98%

Fluorescence quenching in ceria nanoparticles: dissolved oxygen molecular probe with relatively temperature insensitive Stern–Volmer constant up to 50°C

2012

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Ceria nanoparticles (∼7 nm in diameter) were used as a molecular probe for dissolved oxygen sensing based on fluorescence quenching. Strong inverse correlation was found between the amplitude of the fluorescence emission at 520 nm (from excitation shift at 430 nm) and the dissolved oxygen concentration (between 5 and 13 mg∕L). The phenomenon employed depends on the concentration, diffusion, and reactivity of the oxygen vacancies in ceria. These vacancies are associated with the conversion of cerium ions from the Ce þ4 to Ce þ3 states. The Stern-Volmer constant, which is an indication of the sensitivity of gas sensing, was found to be 184.6 M −1 at room temperature. This constant shows good stability between 25°C to 50°C when compared to that of other currently used fluorophores in optical oxygen sensors.

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Section: Temperature Stability Of K Svmentioning

confidence: 98%

Fluorescence quenching in ceria nanoparticles: dissolved oxygen molecular probe with relatively temperature insensitive Stern–Volmer constant up to 50°C

2012

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“…Systematic errors caused by temperature changes can be corrected for by applying temperature compensation, either using independent temperature measurements [212,213] or by using an internal, luminescent temperature-sensitive reference [214]. For applications where large temperature inhomogeneities across the planar optode exist, temperature has to be mapped to perform temperature compensation.…”

Section: Interferencesmentioning

confidence: 99%

Two decades of chemical imaging of solutes in sediments and soils – a review

Santner

Larsen

Kreuzeder

et al. 2015

Analytica Chimica Acta

165

130

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The increasing appreciation of the small-scale (sub-mm) heterogeneity of biogeochemical processes in sediments, wetlands and soils has led to the development of several methods for high-resolution two-dimensional imaging of solute distribution in porewaters. Over the past decades, localised sampling of solutes (diffusive equilibration in thin films, diffusive gradients in thin films) followed by planar luminescent sensors (planar optodes) have been used as analytical tools for studies on solute distribution and dynamics. These approaches have provided new conceptual and quantitative understanding of biogeochemical processes regulating the distribution of key elements and solutes including O2, CO2, pH, redox conditions as well as nutrient and contaminant ion species in structurally complex soils and sediments. Recently these methods have been applied in parallel or integrated as so-called sandwich sensors for multianalyte measurements. Here we review the capabilities and limitations of the chemical imaging methods that are currently at hand, using a number of case studies, and provide an outlook on potential future developments for two-dimensional solute imaging in soils and sediments.

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“…The human body temperature varies in a limited range of 35-40 °C . According to a previous study [15], which provided working temperatures for a fluorescence probe of 25-70 °C , a practical application of the proposed oxygen sensor could perform temperature compensation by using a modified Stern-Volmer model. The proposed portable oxygen sensor has potential to be applied to mini-invasive approaches or connected to devices such as endoscopes or needles to detect tissue oxygen.…”

Section: Potential For Clinical Applicationsmentioning

confidence: 99%

Untitled

Fang

Huang

Yang³

et al. 2013

J. Med. Biol. Eng.

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This study presents and implements a portable, real-time, miniaturized oxygen sensor and detection system. A ruthenium (Ru)-based fluorescent compound is used in conjunction with a light-emitting diode (LED) light source and a phase-shift detection system, which has fluorescent-compound-doped optical fibers and optical source excitation and reception, as well as phase detection circuits. The local oxygen concentrations correlate with the fluorescence phase shifts, which can be determined based on three approaches: an oscilloscope instrument, an integrated chip, and an amplitude-compensated detection circuit. The advantages of the proposed system include the non-consumption of fluorescence dye, no required reference substance, and fast interaction and responses, despite only a 1.4 phase difference from the optical oscilloscope measurementsystem. The proposed portable oxygen sensor has potential to offer a rapid evaluation of oxygen concentration in blood or tissues.

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Temperature compensation of fluorescence intensity-based fiber-optic oxygen sensors using modified Stern–Volmer model

Cited by 27 publications

References 26 publications

Fluorescence quenching in ceria nanoparticles: dissolved oxygen molecular probe with relatively temperature insensitive Stern–Volmer constant up to 50°C

Fluorescence quenching in ceria nanoparticles: dissolved oxygen molecular probe with relatively temperature insensitive Stern–Volmer constant up to 50°C

Two decades of chemical imaging of solutes in sediments and soils – a review

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