An optrode type sensor to measure dissolved oxygen in water

Campo, J.C.; Pérez, María José Sanzo; González, Miguel A.; Ferrero, F.J.

doi:10.1109/imtc.1999.776083

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…In order to further improve the measurement accuracy, Campo [6] adopted the optical fiber coupled LED light source and used the phase-locked amplifier to measure the phase lag and retrieve the oxygen concentration. The measurement accuracy reached 0.02mg • L −1 .…”

Section: Research Progressmentioning

confidence: 99%

Dissolved Oxygen Measurement in Seawater and Sensor Calibration Method

et al. 2021

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The development and key calibration methods of the sensors for the measurement and automatic monitoring of dissolved oxygen in seawater have always been the research focus in the field of Marine monitoring technology. This paper summarizes the measurement methods of dissolved oxygen in seawater, the working principle and advantages and disadvantages of different dissolved oxygen sensors, and the research on calibration methods of mainstream optical dissolved oxygen sensors. Especially for optical dissolved oxygen sensors with better stability, longer service life and stronger anti-interference ability, several laboratory calibration methods which have been developed and applied, as well as in situ calibration methods which are still in the research stage are analyzed.

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Section: Research Progressmentioning

confidence: 99%

Dissolved Oxygen Measurement in Seawater and Sensor Calibration Method

et al. 2021

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“…Optical techniques leverage phosphorescent dyes whose luminescence efficiencies or lifetimes decay with the addition of oxygen 33 , so that the tissue oxygenation can be sensed by imaging or spectroscopic setups 34,35,36 . Compared with electrochemical probes, the luminescence quenching process exhibits superior oxygen selectivity and promising resistance to electromagnetic interferences 37,38 . Traditional tools based on this mechanism to sense PbtO2 utilize tethered fiber-optic systems for light delivery and collection within the deep tissue 39 .…”

Section: Introductionmentioning

confidence: 99%

A wireless optoelectronic probe to monitor oxygenation in deep brain tissue

Cai,

Zhang,

Wei

et al. 2024

Nat. Photon.

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Real-time detection of tissue oxygenation in the nervoussystem is crucial for neuroscience exploration and clinical diagnostics. Compared to blood oxygenation, the partial pressure of oxygen in brain tissue (PbtO2) possesses more direct relevance to local neural activities and metabolic conditions. In this paper, we present an implantable optoelectronic probe that wirelessly and continuously monitors PbtO2 signals in the deep brain of living animals. The thin-film, microscale implant integrates a light-emitting diode and a photodetector coated with oxygen sensitive dyes. Powered by a battery or an inductive coil, a miniaturized circuit is capable of recording and wirelessly transmitting PbtO2 signals, which allows for simultaneous monitoring of PbtO2 levels in multiple freely moving rodents. The wireless micro-probe captures cerebral hypoxia states of mice in various scenarios, including altered inspired oxygen concentration, acute ischemia. Particularly, in mouse models with seizures, the micro-probe associates temporal PbtO2 variations in multiple brain regions with electrical stimulations imposed in the hippocampus. These materials and device strategies overcome the limits of existing oxygen sensing approaches and provide important insights into neurometabolic coupling.

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“…The former have limitations in that they consume oxygen in water, thus varying the local oxygen concentration around the detecting probe. Campo et al reported the latter method to detect dissolved oxygen in water [ 3 ]. In their method, an Al-Ferron oxygen detecting probe in a sol-gel is covered with a nylon membrane that reduced its time response to the oxygen change on the order of minutes.…”

Section: Introductionmentioning

confidence: 99%

Global Oxygen Detection in Water Using Luminescent Probe on Anodized Aluminum

Sakaue

Ozaki

Ishikawa

2009

Sensors

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We have developed anodized-aluminum pressure-sensitive paint (AA-PSP) as a global oxygen sensor in water. Platinum (II) meso-tetra(pentafluorophenyl)porphine is selected as a luminophore based on a dipping deposition study. The developed AA-PSP is characterized using water calibration setup by controlling dissolved oxygen concentration. It is shown that AA-PSP yields 4.0% change in luminescence per 1 mg/L of oxygen concentration at 23°C. Other characteristics, such as temperature dependency, photo-degradation, and physical stability, are discussed in this paper. This AA-PSP is used to demonstrate its capability of global oxygen detection in water using the impingement of oxygen rich water (20 mg/L). Even though the difference in water is only the concentration of oxygen, we can obtain global oxygen information of the jet impingement using a fast frame rate camera. Oxygen maps as well as cross-sectional distributions are shown every 0.1 s.

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An optrode type sensor to measure dissolved oxygen in water

Cited by 5 publications

References 7 publications

Dissolved Oxygen Measurement in Seawater and Sensor Calibration Method

Dissolved Oxygen Measurement in Seawater and Sensor Calibration Method

A wireless optoelectronic probe to monitor oxygenation in deep brain tissue

Global Oxygen Detection in Water Using Luminescent Probe on Anodized Aluminum

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