Applications of Optochemical Sensors for Measuring Chemical Quantities

Wolfbeis, Otto S.; Boisde, G.

doi:10.1002/9783527620142.ch4

Cited by 6 publications

(2 citation statements)

References 144 publications

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“…Nile blue serves as a pH indicator and alters the absorption of the layer, which is taken by the diode as a signal (figure 26). The principle of pHsensitive optochemical sensors is described in [73]. Another optode for the detection of CO 2 from the same manufacturer uses a porous polybutadiene layer with phosphazene as the selective agent and a yellow stilben azo dye as the pH indicator.…”

Section: Fire Detectionmentioning

confidence: 99%

Function and applications of gas sensors

Köhl

2001

J. Phys. D: Appl. Phys.

433

217

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Gas sensors directed to high-volume applications are discussed. Mainly semiconductor sensors cover this sector, but the merits of competing devices are shown in comparison. Chemical and physical function is elucidated by spectroscopic results and molecular calculations. Important applications, e.g. monitoring of combustibles, especially methane, and the early detection of fires, are presented as illustrations. Progress in microelectronics has enhanced the development of electronic noses. An early example of such noses, the identification of solvents and also the present state of food aroma detection are described.

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Section: Fire Detectionmentioning

confidence: 99%

Function and applications of gas sensors

Köhl

2001

J. Phys. D: Appl. Phys.

433

217

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“…Materials which exhibit luminescence quenched by the presence of oxygen have been known for many years, and have long been recognised as offering a basis for the fabrication of selective oxygen sensors [34]. In recent years, a number of reviews have described various material systems which can be exploited, including polycyclic aromatic hydrocarbons, metalloporphyrins and polypyridyl complexes [35,36].…”

Section: Other Technologiesmentioning

confidence: 99%

Oxygen Sensing for Industrial Safety — Evolution and New Approaches

Willett

2014

Sensors

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Abstract:The requirement for the detection of oxygen in industrial safety applications has historically been met by electrochemical technologies based on the consumption of metal anodes. Products using this approach have been technically and commercially successful for more than three decades. However, a combination of new requirements is driving the development of alternative approaches offering fresh opportunities and challenges. This paper reviews some key aspects in the evolution of consumable anode products and highlights recent developments in alternative technologies aimed at meeting current and anticipated future needs in this important application.

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