Moessbauer spectroscopy

Stevens, John G.; Bowen, L. H.

doi:10.1021/ac00269a015

Cited by 7 publications

(4 citation statements)

References 162 publications

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“…The past several decades have witnessed a tremendous development of chemical sensors in many fields [ 1 – 4 ]. Gases detecting and harmful vapors with early warning feature are playing increasingly important roles in many fields, including environmental protection, industrial manufacture, medical diagnosis, and national defense.…”

Section: Introductionmentioning

confidence: 99%

A Review on Graphene-Based Gas/Vapor Sensors with Unique Properties and Potential Applications

et al. 2015

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Graphene-based gas/vapor sensors have attracted much attention in recent years due to their variety of structures, unique sensing performances, room-temperature working conditions, and tremendous application prospects, etc. Herein, we summarize recent advantages in graphene preparation, sensor construction, and sensing properties of various graphene-based gas/vapor sensors, such as NH3, NO2, H2, CO, SO2, H2S, as well as vapor of volatile organic compounds. The detection mechanisms pertaining to various gases are also discussed. In conclusion part, some existing problems which may hinder the sensor applications are presented. Several possible methods to solve these problems are proposed, for example, conceived solutions, hybrid nanostructures, multiple sensor arrays, and new recognition algorithm.

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Section: Introductionmentioning

confidence: 99%

A Review on Graphene-Based Gas/Vapor Sensors with Unique Properties and Potential Applications

et al. 2015

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“…With the advent of the microcomputer it is possible, and even more economical, to replace the multichannel analyzer with a microcomputer system. Some of these new systems were reported in our last review (257). There are two recent reports in which these popular microcomputers have been used to provide for the multiscaling.…”

Section: Instrumentationmentioning

confidence: 99%

“…The use of Mossbauer spectroscopy in the characterization of ancient pottery continues to expand. Maniatis et al (257) studied Punic amphoras found in Corinth, Greece, with Mossbauer spectroscopy and with a variety of other techniques and found that the complete set of data obtained gave a full description of the amphoras. Gancedo et al ( 80) also made use of Mossbauer spectroscopy as one of a number of techniques in the analysis of Iberian pottery found in a site in Seville.…”

Section: Miscellaneous Applicationsmentioning

confidence: 99%

Moessbauer spectroscopy

Stevens¹,

Bowen²,

Whatley³

1986

Anal. Chem.

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“…These gas sensors can require long-term stable measurements, at the same time, it needs to have high selectivity, and simple construction, with rapid results, being easy to interpret. Traditional gas detection methods mainly include the iodometric method, spectrophotometry, the mercury amount method, and various electrochemical methods [12][13][14][15] . Although these methods have their advantages, most of them suffer from low sensitivity, and they require laboratory-based instrumentation, time-consuming, laborious, and complicated operations, which limits their applicability as a portable, real-time, rapid test sensors; being also often difficult to obtain actual data of gas concentrations.…”

Section: Introductionmentioning

confidence: 99%

Liquid-crystal-droplet-based Monitoring System for Water-soluble Inorganic Acidic Gases from the Atmosphere

Jang

2020

BioChip J

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A liquid crystal (LC)-based pH sensor for real-time monitoring of variations in localized pH values near the LC droplets was developed, and its applicability for the detection of acidic gases was explored. It was found that 4-cyano-4′-pentylbiphenyl (5CB), when doped with hexanoic acid (HA), shows a bright-fan-shaped (planar orientation of LCs) to dark-cross (homeotropic orientation of LCs) optical response to a minimal change of the pH value (from 6.5 to 6.6). The fast and intensive pH-driven optical response can be explained mainly with the orientational transitions of 5CB, induced by the protonation and deprotonation of HA at the interface of aqueous/LC droplet. Because of its high pH sensitivity, the LC-based sensor was further exploited for monitoring the local pH changes, which were originated from concentration changes of acidic gases. The results suggested that at an industrial scale/production environment, the sensor shows excellent performance for long-term monitoring and sensing of acidic gases. This type of LC-based sensor may find to fulfill its applicability potential in the trace measurement of acidic gases.

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Moessbauer spectroscopy

Cited by 7 publications

References 162 publications

A Review on Graphene-Based Gas/Vapor Sensors with Unique Properties and Potential Applications

A Review on Graphene-Based Gas/Vapor Sensors with Unique Properties and Potential Applications

Moessbauer spectroscopy

Liquid-crystal-droplet-based Monitoring System for Water-soluble Inorganic Acidic Gases from the Atmosphere

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