Field comparison of optical and Clark cell dissolved oxygen sensors in the Tualatin River, Oregon, 2005

2006 ◽  
Author(s):  
Matthew W. Johnston ◽  
John S. Williams
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Sensors

scholarly journals Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3995 ◽  
Author(s):  
Yaoguang Wei ◽  
Yisha Jiao ◽  
Dong An ◽  
Daoliang Li ◽  
Wenshu Li ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Real Time ◽  
Optical Detection ◽  
Oxygen Sensors ◽  
Detection Methods ◽  
Future Research ◽  
Advantages And Disadvantages ◽  
Oxygen Detection ◽  
Detection Technology ◽  
Intelligent Technology

Dissolved oxygen is an important index to evaluate water quality, and its concentration is of great significance in industrial production, environmental monitoring, aquaculture, food production, and other fields. As its change is a continuous dynamic process, the dissolved oxygen concentration needs to be accurately measured in real time. In this paper, the principles, main applications, advantages, and disadvantages of iodometric titration, electrochemical detection, and optical detection, which are commonly used dissolved oxygen detection methods, are systematically analyzed and summarized. The detection mechanisms and materials of electrochemical and optical detection methods are examined and reviewed. Because external environmental factors readily cause interferences in dissolved oxygen detection, the traditional detection methods cannot adequately meet the accuracy, real-time, stability, and other measurement requirements; thus, it is urgent to use intelligent methods to make up for these deficiencies. This paper studies the application of intelligent technology in intelligent signal transfer processing, digital signal processing, and the real-time dynamic adaptive compensation and correction of dissolved oxygen sensors. The combined application of optical detection technology, new fluorescence-sensitive materials, and intelligent technology is the focus of future research on dissolved oxygen sensors.

Automated active fault detection in fouled dissolved oxygen sensors

2019 ◽  
Vol 166 ◽  
pp. 115029
Author(s):  
Oscar Samuelsson ◽  
Jesús Zambrano ◽  
Anders Björk ◽  
Bengt Carlsson
Keyword(s):  
Fault Detection ◽  
Dissolved Oxygen ◽  
Active Fault ◽  
Oxygen Sensors ◽  
Active Fault Detection

scholarly journals Methods and Best Practice to Intercompare Dissolved Oxygen Sensors and Fluorometers/Turbidimeters for Oceanographic Applications

Sensors ◽  
2016 ◽  
Vol 16 (5) ◽  
pp. 702 ◽  
Author(s):  
Sara Pensieri ◽  
Roberto Bozzano ◽  
M. Schiano ◽  
Manolis Ntoumas ◽  
Emmanouil Potiris ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Best Practice ◽  
Oxygen Sensors

Dissolved Oxygen Sensors Predict Seasonal Manganese Increases

Opflow ◽  
2015 ◽  
Vol 41 (1) ◽  
pp. 14-16
Author(s):  
Vadim B. Malkov
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Sensors

scholarly journals Ratiometric Dissolved Oxygen Sensors Based on Ruthenium Complex Doped with Silver Nanoparticles

Sensors ◽  
2017 ◽  
Vol 17 (3) ◽  
pp. 548 ◽  
Author(s):  
Zike Jiang ◽  
Xinsheng Yu ◽  
Shikui Zhai ◽  
Yingyan Hao
Keyword(s):  
Silver Nanoparticles ◽  
Dissolved Oxygen ◽  
Ruthenium Complex ◽  
Oxygen Sensors

scholarly journals The Design and Fabrication of Three-Chamber Microscale Cell Culture Analog Devices with Integrated Dissolved Oxygen Sensors

2008 ◽  
Vol 20 (1) ◽  
pp. 338-345 ◽  
Author(s):  
Aaron Sin ◽  
Katherine C. Chin ◽  
Muhammad F. Jamil ◽  
Yordan Kostov ◽  
Govind Rao ◽  
...  
Keyword(s):  
Cell Culture ◽  
Dissolved Oxygen ◽  
Oxygen Sensors

scholarly journals Optimization of Ormosil Glasses for Luminescence Based Dissolved Oxygen Sensors

2010 ◽  
Vol 161 ◽  
pp. 1-11 ◽  
Author(s):  
J. Palmeira ◽  
L. Lopes ◽  
A.J. Silva ◽  
P.A.S. Jorge ◽  
A. Oliva
Keyword(s):  
Dissolved Oxygen ◽  
Optical Sensors ◽  
Ruthenium Complex ◽  
Oxygen Sensing ◽  
Sol Gel ◽  
Dip Coating ◽  
Oxygen Sensors ◽  
Quenching Efficiency ◽  
Sol Gel Films ◽  
The Impact

In the recent years, sol-gel films have been intensively used in optical sensors configurations. Due to its hydrophobic nature, ormosil films have been reported to be a promising supporting matrix for oxygen sensing dyes for measurements in aqueous media. In this work, the impact of the sol-gel host fabrication parameters in the characteristics of the resulting oxygen sensing membranes is thoroughly evaluated. Different combinations of organic-inorganic precursors, with different aging times, were tested as oxygen sensors. All the solution were doped with ruthenium complex Ru(II)-tris(4,7-diphenyl-1,10-phenanthroline) to introduce oxygen sensitivity. Thin films were produced by dip coating of glass slides. The oxygen sensitive films were tested in aqueous phase in equilibrium with different oxygen gas compositions, using a phase-modulation technique. Sensor performance parameters such as Stern-Volmer constant, quenching efficiency and lifetime response are reported. The data obtained clearly indicates that increased aging times and longer organic groups produce sensors with the highest sensitivity to dissolved oxygen. From all sol-gel films produced, the BTEOS:TEOS (1:1) mixture is the most promising for sensor construction.

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