Detection of Argon by Penning Ionization and Competitive Absorption Using a Sensitized Photoionization Detector

Skaggs, Rhonda L.; Lores, Marta; Lewis, and William M.; Birks, John W.

doi:10.1021/ac9802022

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…Ce type de montage génère deux signaux par substance et né-cessite d'être bien calibré. À température ambiante, pour s'affranchir de la coélution de l'oxygène, la phase stationnaire de l'une des deux colonnes est alors greffée d'une phase absorbante d'oxygène [60].…”

Section: Stratégie Analytiqueunclassified

“…En effet, l'argon élué de la colonne est ionisé par une lampe à l'argon (11,7 eV), puis mesuré indirectement par son effet sur un gaz ionisable présent dans la cellule de détection comme l'oxyde d'azote. L'argon ionisé augmente le bruit de fond du courant ionique total qui trahit sa présence dans l'éluat chromatographique [60] proportionnellement à sa concentration.…”

Section: Stratégie Analytiqueunclassified

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L’argon : utilisations, toxicité et stratégie analytique en toxicologie médicolégale

2012

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Résumé -Bien qu'intrinsèquement non toxiques, les gaz nobles comme l'argon entraînent à fortes concentrations une déplétion d'oxygène pouvant mener jusqu'à l'asphyxie. Si l'argon se retrouve dans la circulation générale, celui-ci peut même être responsable d'embolies parfois fatales. Cependant, les propriétés d'inerties physicochimiques de ce gaz le rendent très utile dans de nombreuses applications actuelles. Ces applications étant en constante augmentation, il n'est pas rare d'observer proportionnellement des intoxications parfois létales liées à ce gaz. Ainsi, devant le manque d'harmonisation des prélèvements d'échantillons biologiques afin de mettre en évidence de telles intoxications aux gaz nobles et devant l'augmentation du nombre de cas, il devient nécessaire d'établir un état des lieux sur l'utilisation de l'argon, sa toxicité et la stratégie analytique à adopter dans le contexte médico-légal. Mots clés :Argon, gaz noble, échantillonnage de gaz, analyse de gaz Abstract -Even though noble gases such as argon are intrisically non-toxic, they will enhance an oxygen-depletion at high concentrations. This depletion may lead to asphyxia. If argon is found in blood flow, it could be responsible of an embolism. However, its inert physicochemical properties appear to be very useful to a wide range of current applications. The rise of these applications induces a proportionnal increase of lethal intoxications due to this gas. Thus, as no standardization of biological samples exists, and knowing the increase of argon intoxication cases, it seems necessary to establish an incoming inventory of fixture concerning the use of argon. It will confirm its toxicity properties and will highlight other intoxications due to noble gas. This should lead to a new analytical strategy suitable to the forensic context.

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Section: Stratégie Analytiqueunclassified

L’argon : utilisations, toxicité et stratégie analytique en toxicologie médicolégale

2012

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Performance of optimized TVOCs sensor

Peng

Luoa

Yuan

et al. 2010

Procedia Engineering

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Gas Chromatography

2000

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Review Contents Reviews, Books, and General Interest 137R Solid Adsorbents and Supports 138R Natural Adsorbents 138R Synthetic Adsorbents 138R Liquid Phases 138R Synthetic Organic Phases 138R Chiral Phases and Natural Phases 139R Chromatographic Theory 140R Columns and Column Technology 140R Multidimensional Gas Chromatography 141R Data Processing and Quantitative Aspects 141R Analysis of Peak Shape 141R Pattern Recognition and Artificial Intelligence 141R Quantitative Aspects 141R High-Speed Gas Chromatography 141R Detectors 142R Literature Cited 143R REVIEWS, BOOKS, AND GENERAL INTERESTReview articles on GC appeared during this review cycle and included a broad discussion of the trends in GC developments and applications (A1). The conclusion from the review, principally with articles from the mid-1990s, was that gas chromatography remains a healthy and growing measurement technique with expanding influence. This is consistent with the findings from this review where the vitality of GC is found in helpful and innovative applications with increasing measure. Still, as in prior reviews, fundamental developments constitute a small component (∼20% or less) of all publications in GC. One review, which should be useful with a growing trend in stationary-phase offerings, was the discussion of methods to characterize the chromatographic properties of stationary phases (A2). This reminder is welcome in view of the growing selection of stationary phases and after a decade where most separations were completed on only a few stationary phases, as available in bonded phase capillary columns. Another review, from past technology, was given (A3) for porous layer open tubular (PLOT) capillary columns. Once seen as means for providing excellent resolution with sample sizes greater than available in thin-film capillary columns, PLOT columns were situated in performance between packed and capillary columns. These properties are balanced against some limitations and the authors suggest that the value of PLOT columns for future users remains unclear; nonetheless, this review may serve as a point of reference for speculation on the future possibilities of PLOT columns.In common GC experiments, the carrier gas is intended only for mass transport. A review (with 145 references) on the role of carrier gases on the separation process (A4) demonstrates that carrier gas interactions are integral to the chromatographic process. This may be regarded as inadvertent by some, yet others intentionally modify the carrier to obtain specialized effects. One such gas, ammonia, was the subject of a review on interactive gases in GC (A5). Examples were presented and discussed where ammonia, blended at low levels in the carrier gas, has improved peak symmetry and detection limits.The subject of pyrolysis GC, long seen as a means of probing the chemical composition of nonvolatile materials using GC, was

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Detection of Argon by Penning Ionization and Competitive Absorption Using a Sensitized Photoionization Detector

Abstract: 16) Gawlowski, J.; Maurin, J.; Niedzielski, J.

Cited by 4 publications

References 16 publications

L’argon : utilisations, toxicité et stratégie analytique en toxicologie médicolégale

L’argon : utilisations, toxicité et stratégie analytique en toxicologie médicolégale

Performance of optimized TVOCs sensor

Gas Chromatography

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