A Method for On‐Site Analysis of Urinary Benzene by Means of a Portable Gas‐Chromatograph

Abstract For on-site analysis of surface materials on the moon, planets, and small bodies and for the monitoring of air quality in crewed spacecraft, we have developed a portable gas chromatograph (GC) equipped with a ball surface acoustic wave (SAW) sensor. In this study, we fabricated a 10 cm cube GC that implements the forward flush method using two metal micro-electro-mechanical-system (MEMS) columns coated with different stationary phases in microchannels fabricated by wet etching and diffusion bonding of stainless-steel plates. Using this GC, we succeeded in analyzing 10 kinds of gas within 10 min. In addition, for the application of the ball SAW GC on the ground, we also developed a palm-sized GC with a single metal capillary column and used it in the analysis of the headspace gas of sake. We showed that the ratio of peak areas differed among odorants depending on the brand and brewing process of sake.

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Operating of the Torion® T-9 portable gas chromatograph-mass spectrometer (PerkinElmer) for the analysis of animal scent samples v2 (protocols.io.brpqm5mw)

protocols.io ◽

10.17504/protocols.io.brpqm5mw ◽

2021 ◽

Author(s):

Alice C. ◽

John S. ◽

Mrinalini Watsa ◽

Gideon A. ◽

Laís A. ◽

...

Keyword(s):

Mass Spectrometer ◽

Gas Chromatograph ◽

Portable Gas Chromatograph

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Air pollution in landfill of wastes other than hazardous or inert / Zanieczyszczenia powietrza na składowiskach odpadów innych niż niebezpieczne i obojętne

Archives of Environmental Protection ◽

10.1515/aep-2015-0017 ◽

2015 ◽

Vol 41 (2) ◽

pp. 41-46 ◽

Cited By ~ 1

Author(s):

Ewa Miaśkiewicz-Pęska ◽

Mirosław Szyłak-Szydłowski

Keyword(s):

Air Pollution ◽

Chemical Analysis ◽

Microscopic Fungi ◽

Gas Chromatograph ◽

Psychrophilic Bacteria ◽

Air Samples ◽

Atmospheric Air ◽

Bacteria And Fungi ◽

Portable Gas Chromatograph

Abstract Microbiological and chemical analysis of air was carried out on the area of landfill of wastes other than inert or hazardous. The landfill covers 20 ha and 40 000 Mg of wastes is deposited annually. Municipal waste is not segregated at the landfill. The research was conducted in April, May and November 2012. Number of the psychrophilic and mesophilic bacteria and fungi was estimated by a culture-based method. Quantitative determination of sulfur compounds and meteorological and olfactrometric examinations were also carried out. Chemical analysis was conducted with a Photovac Voyager portable gas chromatograph. Air samples were collected at 5 points. The largest group of microbes were psychrophilic bacteria, especially in summer. The highest concentration of hydrogen sulfide and other odorants was found at leachate tank and landfill body. According to the Polish Standard for the assessment of atmospheric air pollution the air in the area of the landfill is classified as not contaminated and sporadically moderately contaminated. In spring and summer the number of microscopic fungi was increased also in control samples.

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