Optical pH sensor for physiological pH measurement

1994 ◽  
Author(s):  
Sifu Zhang ◽  
Peter J. Rolfe ◽  
Yappa A. Wickramasinghe
Keyword(s):  
Ph Sensor ◽  
Ph Measurement ◽  
Optical Ph Sensor

An Optical pH Sensor Based on Diazocine

2017 ◽  
Vol 2 (26) ◽  
pp. 7956-7960 ◽  
Author(s):  
Yanan Liu ◽  
Zuwei Song ◽  
Libin Gao ◽  
Jianzhong Li
Keyword(s):  
Ph Sensor ◽  
Optical Ph Sensor

scholarly journals Preparation and Characterization of a Pectin Membrane-Based Optical pH Sensor for Fish Freshness Monitoring

Biosensors ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 60 ◽  
Author(s):  
Uswatun Hasanah ◽  
Mita Setyowati ◽  
Rustam Efendi ◽  
Muslem Muslem ◽  
Nor Diyana Md Sani ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Response Time ◽  
Relative Standard Deviation ◽  
Ph Sensor ◽  
Sensor Response ◽  
Relative Standard ◽  
Optical Ph Sensor

In a simple and instant procedure for detecting fish freshness, a hydrogel and hydrophilic pectin matrix membrane was used successfully as an optical pH sensor by immobilizing the chromoionophore ETH 5294 (CI), which is very selective and sensitive for the membrane. The Pe/CI optical pH sensor exhibited excellent linearity between pH 5 and pH 9, with a sensor response time of 5 min and reproducibility of 1.49% relative standard deviation (RSD). The sensor showed response stability for 15 days and a response reduction of 8.6%. The sensor’s capability was demonstrated by the detection of fish freshness for 17 days at 4 °C.

Development of polyaniline–multiwalled carbon nanotube (PANI–MWCNT) nanocomposite for optical pH sensor

2013 ◽  
Vol 17 (4) ◽  
pp. 238-243 ◽  
Author(s):  
M. V. Kulkarni ◽  
N. A. Charhate ◽  
K. V. Bhavsar ◽  
M. A. Tathe ◽  
B. B. Kale
Keyword(s):  
Carbon Nanotube ◽  
Ph Sensor ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Optical Ph Sensor

All-Solid-State pH Sensor Based on Conducting Polymer

2010 ◽  
Vol 93-94 ◽  
pp. 591-594 ◽  
Author(s):  
W. Natedungta ◽  
W. Prissanaroon-Ouajai
Keyword(s):  
Solid State ◽  
Conducting Polymer ◽  
Electrolyte Solution ◽  
Ph Sensor ◽  
Reference Electrode ◽  
Ph Measurement ◽  
Metallic Silver ◽  
Internal Solution ◽  
State Reference ◽  
Ph Electrode

A solid-state (free of internal electrolyte solution) reference electrode based on metallic silver is simply fabricated via a simple electrodeposition from AgNO3. Potentiometry is carried out to study the performance of the solid-state reference electrode in comparison with the commercial Ag/AgCl reference electrode. In addition, the proposed solid-state reference electrode has been integrated with the PPy-modified pH electrode to form an all-solid-state pH sensor, showing the capability of pH measurement. Absence of the internal solution leads to the pH sensor that is convenient to use and maintenance. In addition, the proposed pH sensor is possibly applied to biochemical and medical processes as well as flow infection analysis.

Surface pH Measurement during CO2 Corrosion by an IrOx pH Probe

2016 ◽  
Vol 1133 ◽  
pp. 381-385
Author(s):  
Saeid Kakooei ◽  
Mokhtar Che Ismail ◽  
Bambang Ari-Wahjoedi
Keyword(s):  
Real Time ◽  
Metal Surface ◽  
Ph Sensor ◽  
Temperature Monitoring ◽  
Ph Measurement ◽  
Financial Resources ◽  
Corrosion Monitoring ◽  
Material Damage ◽  
Sensor Design ◽  
Surface Ph

CO2 corrosion comprises the majority of material damage, which leads to shutdown in petroleum industries. This phenomenon depends on parameters such as pH and temperature. Monitoring and recording these parameters help industries minimize waste in terms of time and financial resources. The insufficiency of tools for this purpose is noticeable. This study proposed an potentiometric IrO2–pH microelectrode design in conjuction with a Ag/AgCl refrence electrode for real-time corrosion monitoring that can be used in various industries. Electrodeposition approach was used in the fabrication of a pH sensor. Electrochemical experiments were conducted to characterize the IrO2–pH sensor as well as monitor the pH on a metal surface in conjunction with the fabrication of a pH microelectrode-designed system. Results show that the proposed pH sensor design can be used for real-time corrosion monitoring by surface pH measurement.

Evaluation of a luminescent ruthenium complex immobilized inside Nafion as optical pH sensor

The Analyst ◽  
1998 ◽  
Vol 123 (9) ◽  
pp. 1843-1847 ◽  
Author(s):  
Chun-Man Chan ◽  
Kwok-Yin Wong
Keyword(s):  
Ruthenium Complex ◽  
Ph Sensor ◽  
Optical Ph Sensor

Full-range optical pH sensor array based on neural networks

2011 ◽  
Vol 97 (2) ◽  
pp. 225-233 ◽  
Author(s):  
S. Capel-Cuevas ◽  
M.P. Cuéllar ◽  
I. de Orbe-Payá ◽  
M.C. Pegalajar ◽  
L.F. Capitán-Vallvey
Keyword(s):  
Neural Networks ◽  
Sensor Array ◽  
Full Range ◽  
Ph Sensor ◽  
Optical Ph Sensor

Rapid method for the preparation of a robust optical pH sensor

The Analyst ◽  
2003 ◽  
Vol 128 (9) ◽  
pp. 1181 ◽  
Author(s):  
Haley R. Kermis ◽  
Yordan Kostov ◽  
Govind Rao
Keyword(s):  
Rapid Method ◽  
Ph Sensor ◽  
Optical Ph Sensor
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