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Electrochemical Carbon Dioxide Sensor
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Book Synopsis Electrochemical Carbon Dioxide Sensor by : Frank B. Leitz
Download or read book Electrochemical Carbon Dioxide Sensor written by Frank B. Leitz and published by . This book was released on 1967 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the program was to develop a novel carbon dioxide sensor based on obtaining changes in the electrical resistance of anion-exchange resin proportional to the ambient partial pressure of carbon dioxide. The change in resistance is due to the increased ionization of a weakly ionized base in the presence of a sightly acid gas. A laboratory program was conducted to evaluate the response of various types of weak-base ion-exchange polymers to carbon dioxide concentrations in the range of 0 to 4%. The optimum material consisted of a condensation polymer of resorcinol, formaldehyde and triethylenetetramine. A laboratory model of the CO2 Sensor was fabricated using these sensing elements in the form of small, thin strips. In order to minimize the effects of humidity and temperature, the model contained two sensing elements, one being a reference. A guard chamber was provided to absorb any strongly-acid gases. Electrical readout is made on a balancing potentiometer with an earphone detector. The Sensor is small (about 50 cubic inches), weighs less than 6 ounces, has a power requirement of less than 0.5 watts, and its operation is independent of gravity. (Author).
Book Synopsis Carbon Dioxide Sensing by : Gerald Gerlach
Download or read book Carbon Dioxide Sensing written by Gerald Gerlach and published by John Wiley & Sons. This book was released on 2019-04-01 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides the reader with a profound knowledge of basic principles, properties and preferred applications of diverse kinds of CO2 measurement. It shows the advantages, disadvantages and limitations of several methods and gives a comprehensive overview of both possible applications and corresponding boundary conditions. Applications reach from environmental monitoring to safety control to biotechnology and food control and finally to medicine.
Book Synopsis An Improved Electrochemical Carbon Dioxide Sensor by : Robert J. Reyes
Download or read book An Improved Electrochemical Carbon Dioxide Sensor written by Robert J. Reyes and published by . This book was released on 1967 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continued work with an electrochemical carbon dioxide detector has produced a unit that has improved signal stability as well as a considerably shortened response time. The detector configuration incorporates a pH electrode and an Ag-AgCl reference electrode joined by an electrolyte solution. The conventional high impedance electrometer system normally used with such detectors was replace and capacitive pickup problems at the input stage of remotely placed signal conditioners were minimized by close physical arrangement of the field-effect transistor and the detector.
Download or read book SAM-TR. written by and published by . This book was released on 1967-07 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Novel Electrochemical Sensor for Carbon Dioxide by : William Kerckhoff Young
Download or read book A Novel Electrochemical Sensor for Carbon Dioxide written by William Kerckhoff Young and published by . This book was released on 1988 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon Dioxide Sensing by : Gerald Gerlach
Download or read book Carbon Dioxide Sensing written by Gerald Gerlach and published by John Wiley & Sons. This book was released on 2019-08-05 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides the reader with a profound knowledge of basic principles, properties and preferred applications of diverse kinds of CO2 measurement. It shows the advantages, disadvantages and limitations of several methods and gives a comprehensive overview of both possible applications and corresponding boundary conditions. Applications reach from environmental monitoring to safety control to biotechnology and food control and finally to medicine.
Book Synopsis Electrochemical Reduction of Carbon Dioxide by : Jinli Qiao
Download or read book Electrochemical Reduction of Carbon Dioxide written by Jinli Qiao and published by CRC Press. This book was released on 2016-07-06 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: For Researchers, Students, Industrial Professionals, and ManufacturersElectrochemical Reduction of Carbon Dioxide: Fundamentals and Technologies is your guide to improved catalytic performance in the electrochemical reduction of carbon dioxide (CO2). Written by electrochemical energy scientists actively involved in environmental research and develo
Book Synopsis A New Carbon Dioxide Sensing Method Suitable for Use in Microelectrode Sensors by : David Wong
Download or read book A New Carbon Dioxide Sensing Method Suitable for Use in Microelectrode Sensors written by David Wong and published by . This book was released on 1982 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Present electrochemical CO2-sensors are basically modified pH-electrodes; the operating principle of which is based on the measurement of a potential that is effectively a linear function of the logarithm of H+ ion concentration. The relationship between pH and PCO2 is delta pH = 0.97 delta log 10PCO2. Since one unit of pH at room temperature corresponds to less than 60 mV potential change, it is obvious that the PCO2 measurement is intrinsically inaccurate. In addition, this method is not conductive to miniaturization and it is susceptible to the same basic problems associated with the pH-electrode, i.e. low sensitivity, slow response and considerable drift. The feasibility of developing a new electrochemical carbon dioxide sensing method based on the reductive adsorption of CO2 onto a noble metal electrode and the subsequent anodic oxidation of the 'Reduced-CO2' species has been investigated experimentally. It was established that under proper conditions the presence of oxygen does not interfere with the measurement of CO2 concentration.
Book Synopsis The development of a novel electrochemical sensor for carbon dioxide by : William Kerckhoff Young
Download or read book The development of a novel electrochemical sensor for carbon dioxide written by William Kerckhoff Young and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Ceramic Li-electrolyte Based CO2 Sensors for Temperatures Ranging from Ambient to High Temperature by : Inhee Lee
Download or read book Development of Ceramic Li-electrolyte Based CO2 Sensors for Temperatures Ranging from Ambient to High Temperature written by Inhee Lee and published by . This book was released on 2009 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Solid-state electrochemical CO2 gas sensors composed of an electrolyte and two porous electrodes have been used extensively in the automobile and bio-chemical industry. Based on the field of application, the working temperature of the sensor ranges from room temperature to 600 °C. Two potentiometric CO2 sensors that work at different temperature ranges were developed in this work. A potentiometric CO2 gas sensor with Li3PO4 electrolyte and BaCO3coated Li2CO3sensing electrode was developed and the sensing electrode was characterized in order to understand its sensing mechanism under humid conditions. This potentiometric CO2 sensor showed humidity-interference-free sensing response for high CO2 concentrations (5~25%) at high temperatures (T> 400 °C). In addition, the sensor showed good reproducibility and long-term stability under humid conditions. In the sensing electrode, the BaCO3layer improved the resistance against humidity as a chemical barrier, while the inner Li2CO3layer was responsible for the CO2 sensing. However, the sensor in which the eutectic layer covered the entire sensing electrode showed good sensing behavior under dry and humid conditions. Lately, low-temperature CO2 sensors have been attracting attention due to their low power consumption and easy sensor miniaturization, since a heater is unnecessary. We have developed a low-temperature CO2 sensor based on lithium lanthanum titanate (LLT) electrolyte in dry conditions that requires further improvement. Lithium lanthanum titanate (LLT) electrolytes were prepared by a conventional solid-state method. The impedance of the LLT electrolyte was measured over the temperature range of 300 to 473 K and the frequency range of 5 Hz and 13 MHz. Activation energies for the Li ionic conduction for grain boundary and grain were estimated to be 0.47 and 0.31 eV, respectively. It was found that LLT is a good ionic conductor at low temperatures and a good candidate as an electrolyte for low-temperature electrochemical cells. A La2/3-xLixTiO3LLT)-based CO2 sensor with a mixture of CeO2, Au, and Li2CO3as the sensing electrode has been developed and shown to have relatively stable sensing behaviors at 200 °C under dry conditions. However, this sensor showed non-Nernstian behavior because electrochemical reactions were not fast enough on the sensing electrode and the solid electrolyte may have some electronic conduction. In addition, the observed sensitivity was less than the theoretical prediction. By adding K2CO3on the sensing electrode, the sensitivity of the low-temperature CO2 sensor was slightly improved. However, the sensing signals of the sensors were degraded by water vapor under humid conditions due to the formation of KHCO3or K2CO3mH2O (m= 2, 3, or 6). To optimize the low-temperature CO2 sensor, a more active sensing electrode is needed, which may be achieved by controlling the size of particles and their distribution on the electrode. In addition, a thinner electrolyte with pure ionic conduction is also required.
Book Synopsis Electrochemical Sensors in Immunological Analysis by : That T. Ngo
Download or read book Electrochemical Sensors in Immunological Analysis written by That T. Ngo and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of radioimmunoassay (RIA) by R.S. Yalow and S.A. Berson in 1959 opens up a new avenue in ultra sensitive analysis of trace substances in complex biological systems. In recognition of the enormous contributions of RIA to basic research in biology and to routine clinical tests in laboratory medicine, R.S. Yalow, the co-developer of RIA, was awarded, in 1977, the Nobel Prize for Medicine and Physiology. The basic principle of RIA is elegantly simple. It is based on a specific, competitive binding reaction between the analyte and the radio-labeled analog of the analyte for the specific antibody raised to the analyte. The combination of high specificity and affinity of an antibody molecule makes it a very versatile analytical reagent capable of reacting specifically with analytes at a very low concentration in a complex solution such as serum. The sensitivity of RIA is provided by using a radioactive tracer.
Book Synopsis Chemical Sensors Four by : Michael Alan Butler
Download or read book Chemical Sensors Four written by Michael Alan Butler and published by The Electrochemical Society. This book was released on 1999 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A High-temperature Electrochemical Carbon Monoxide Sensor with Nanostructured Metal Oxide Electrode by : Anveeksh Koneru
Download or read book A High-temperature Electrochemical Carbon Monoxide Sensor with Nanostructured Metal Oxide Electrode written by Anveeksh Koneru and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrochemical Sensors Technology by : Mohammed Rahman
Download or read book Electrochemical Sensors Technology written by Mohammed Rahman and published by BoD – Books on Demand. This book was released on 2017-05-31 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book Electrochemical Sensors Technology mostly reviews the modem methods and significant electrochemical and electroanalytical applications of chemical sensors and biosensors. Chapters of this book are invited and contributed from the experts throughout the world from prominent researchers and scientists in the field of sensors and in the field of electro- and biochemistry. Each chapter provides technical and methodological details beyond the level found in typical journal articles or reviews and explores the application of chemical sensors, environmental sensors, and biosensors to a significant problem in biomedical and environmental science, also providing a prospectus for the future. This book compiles with the expert knowledge of many specialists in the construction and use of chemical sensors and biosensors including chemical sensors, biological sensors, DNA sensors, immunosensors, gaseous sensors, ionic sensors, bioassay sensors, lab-on-chips, devices, portable sensors, microchips, nanosensors, implantable microsensors, and so on in the field of fundamental and applied electrochemistry. Highlights and importance are laid on real or practical problems, ranging from chemical application to biomedical monitoring, from in vitro to in vivo, and from single cell to animal to human measurement. This offers a unique opportunity of exchanging and combining the scientist or researcher in electrochemical sensors in largely chemistry, biological engineering, electronic engineering, and biomedical and physiological fields.
Book Synopsis Carbon Monoxide Sensing Technologies by : Gurleen Kaur Gulati
Download or read book Carbon Monoxide Sensing Technologies written by Gurleen Kaur Gulati and published by Materials Research Forum LLC. This book was released on 2021-03-08 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers the sensing and monitoring of poisonous carbon monoxide pollution in the environment. The sensors covered include semiconducting metal oxides, carbon nanotubes, conducting polymeric thin films, sensors based on colorimetric detection, non-dispersive infrared sensors, electrochemical sensors and photoacoustic detectors. Keywords: Poisonous Gas Sensing, Carbon Monoxide Pollution, Semiconducting Metal Oxides, Carbon Nanotubes, Polymeric Thin Films, Colorimetric Gas Detection, Non-dispersive Infrared Sensors, Electrochemical Sensors, Photoacoustic Detectors, Bio-sensing of CO, Carbon Monoxide Pollution Sources, Mechanism of CO Toxicity.
Book Synopsis Electrochemical Carbon Dioxide Reduction by : Samuel C. Perry
Download or read book Electrochemical Carbon Dioxide Reduction written by Samuel C. Perry and published by de Gruyter. This book was released on 2021-09-21 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon dioxide reduction is a key research challenge in the global mission to reduce CO2 emissions. This book presents an introduction to the field, covering the chemical reactions involved, the range of innovative materials and reactor designs most recently developed, and the future targets that need to be met. The book is ideal for new researchers and graduate students interested in the fields of chemical catalysis and chemical engineering.
Book Synopsis Scanning Electrochemical Microscopy by : Allen J. Bard
Download or read book Scanning Electrochemical Microscopy written by Allen J. Bard and published by CRC Press. This book was released on 2001-04-18 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scanning Electrochemical Microscopy describes the theory and operating principles of scanning electrochemical microscopy (SECM), including instrumentation, tip preparation, imaging techniques and potentiometric probes. The book explores applications relevant to electron transfer reactions, reaction kinetics, chemical events at interfaces, biologica
