Detection of Contrabands in Cargo Containers Using a High-Speed Gas Chromatograph with Surface Acoustic Wave Sensor

Staples, E.; Viswanathan, Shekar

doi:10.1021/ie701703y

Cited by 15 publications

(13 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microsensors are often used in this kind of device due to their low carrier gas consumption, small size, low power consumption for operation, and quite good sensitivity compared to standard sensors. Examples of microsensors include the solid-state thermal conductivity detector (TCD or SSD) [102][103][104], photoionisation detector (PID), [105,106], surface acoustic wave (SAW) detector [107][108][109], and the flame ionisation detector (FID) [99,[110][111][112].…”

Section: Portable Gas Chromatographsmentioning

confidence: 99%

The Application of In Situ Methods to Monitor VOC Concentrations in Urban Areas—A Bibliometric Analysis and Measuring Solution Review

Wiśniewska

Szyłak-Szydłowski

2022

Sustainability

View full text Add to dashboard Cite

Urbanisation development affects urban vegetation both directly and indirectly. Since this process usually involves a dramatic change in land use, it is seen as likely to cause ecological pressure on local ecosystems. All forms of human activity, including urbanisation of areas close to residential buildings, significantly impact air quality. This study aims to identify and characterise different measurement solutions of VOCs, allowing the quantification of total and selective compounds in a direct at source (in situ) manner. Portable devices for direct testing can generally be divided into detectors, chromatographs, and electronic noses. They differ in parameters such as operating principle, sensitivity, measurement range, response time, and selectivity. Direct research allows us to obtain measurement results in a short time, which is essential from the point of view of immediate reaction in the case of high concentrations of tested compounds and the possibility of ensuring the well-being of people. The paper also attempts to compare solutions and devices available on the market and assess their application.

show abstract

Section: Portable Gas Chromatographsmentioning

confidence: 99%

The Application of In Situ Methods to Monitor VOC Concentrations in Urban Areas—A Bibliometric Analysis and Measuring Solution Review

Wiśniewska

Szyłak-Szydłowski

2022

Sustainability

View full text Add to dashboard Cite

show abstract

“…Depending on physical and chemical properties, such as the boiling point, the polarity, H-bonding, and polarizability, the affinity of each single substance for the stationary phase is different. The partition behavior determines the retention time of the components and, consequently, the order of elution [57].…”

Section: Gas Chromatographymentioning

confidence: 99%

Electronic Nose Based on Nanomaterials: Issues, Challenges, and Prospects

Ramgir

2013

ISRN Nanomaterials

View full text Add to dashboard Cite

The ability to precisely control the morphology and dimension coupled with the tunable surface reactivity has led to the widespread investigation of nanomaterials for various device applications. The associated high surface area to volume ratio implies that large numbers of atom are residing on the surface and are available for interaction. Accordingly, nanomaterials have demonstrated the potential to realize sensors with ultrahigh sensitivities and fast response kinetics. The smaller size further provides the possibility of miniaturization and integration of large number of devices. All these properties makes them an attractive candidate for the fabrication of electronic nose or e-nose. E-nose is an intelligent chemical-array sensor system that mimics the mammalian olfactory system. The present paper critically reviews the recent development in the field of nanomaterials based e-nose devices. In particular, this paper is focused on the description of nanomaterials for e-nose application, specifically on the promising approaches that are going to contribute towards the further development of this field. Various issues related to successful utilization of different nanomaterials for commercial application are discussed, taking help from the literature. The review concludes by briefing the important steps taken towards the commercialization and highlighting the loopholes that are still to be addressed.

show abstract

“…As microcomponents for portable GCs, a silicon microelectromechanical-system (MEMS) column 2,3) and micropump 4) were studied, and their performances were demonstrated by their combination with a conventional desktop GC. Portable GCs were developed using a metal oxide semiconductor sensor, 5) SAW sensor 6) and chemiresistor sensor 7) as detectors. However, they needed temperature programming using a heater because of the analysis of multiple gases with a single column, making them unsuitable for use as portable GCs in terms of power consumption.…”

Section: Introductionmentioning

confidence: 99%

Continuous Measurement of Multiple Gases Using Ball Surface Acoustic Wave Gas Chromatograph

Sakamoto

Akao

Iwaya

et al. 2012

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

A 6-dimensional grand unified theory with the compact space having the topology of a real projective plane, i.e., a 2-sphere with opposite points identified, is considered. The space is locally flat except for two conical singularities where the curvature is concentrated. One supersymmetry is preserved in the effective 4d theory. The unified gauge symmetry, for example SU(5) , is broken only by the non-trivial global topology. In contrast to the Hosotani mechanism, no adjoint Wilson-line modulus associated with this breaking appears. Since, locally, SU(5) remains a good symmetry everywhere, no UV-sensitive threshold corrections arise and SU(5)-violating local operators are forbidden. Doublettriplet splitting can be addressed in the context of a 6d N = 2 super Yang-Mills theory with gauge group SU(6). If this symmetry is first broken to SU(5) at a fixed point and then further reduced to the standard model group in the above non-local way, the two light Higgs doublets of the MSSM are predicted by the group-theoretical and geometrical structure of the model.

show abstract

Detection of Contrabands in Cargo Containers Using a High-Speed Gas Chromatograph with Surface Acoustic Wave Sensor

Cited by 15 publications

References 16 publications

The Application of In Situ Methods to Monitor VOC Concentrations in Urban Areas—A Bibliometric Analysis and Measuring Solution Review

The Application of In Situ Methods to Monitor VOC Concentrations in Urban Areas—A Bibliometric Analysis and Measuring Solution Review

Electronic Nose Based on Nanomaterials: Issues, Challenges, and Prospects

Continuous Measurement of Multiple Gases Using Ball Surface Acoustic Wave Gas Chromatograph

Contact Info

Product

Resources

About