An automated purge and trap gas chromatography-mass spectrometry system for the sensitive shipboard analysis of volatile organic compounds in seawater

Hashimoto, Shinichi; Tanaka, Toŝhiyuki; Yamashita, Nobuyoshi; Maeda, Tsuneaki

doi:10.1002/1615-9314(20010201)24:2<97::aid-jssc97>3.0.co;2-z

Cited by 22 publications

(2 citation statements)

References 22 publications

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“…They are emitted in large quantities from anthropogenic and biogenic sources; their chemistry and interactions have been the subject of numerous studies, because of their involvement in atmospheric oxidation processes, aerosol formation, and their impact on climate change [ Guenther et al , 1995; Dassau et al , 2002; Thompson , 1992]. Furthermore, VOC are found in most compartments of the environment and pose a serious environmental and health hazard, which makes them the subject of regular monitoring programs [ Hashimoto et al , 2001; Bocchini et al , 1999]. The densely populated Quebec‐Windsor Corridor (QWC) stretching from Lake Erie to the St. Lawrence River Valley in southeastern Canada is of prime importance for the study of VOC chemistry, because of the high level of commercial activity and high population numbers [ Reid et al , 1996].…”

Section: Introductionmentioning

confidence: 99%

Volatile organic compounds in snow in the Quebec‐Windsor Corridor

Kos¹,

Ariya²

2010

J. Geophys. Res.

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[1] Volatile organic compounds (VOC) were determined in snow to investigate the role of the snowpack as an exchange medium for atmospherically active compounds of anthropogenic and biogenic origin. The major question was which VOC species occur in snow and how the species identity and selected concentrations are related to the sampling area and environmental conditions. Samples were collected using a standardized sampling protocol in two distinct areas in six locations (near Mont-Saint-Hilaire, 45°33 00 W (rural) in the heavily populated Quebec-Windsor Corridor, Canada, with different characteristics regarding location and proximity to urban centers. A solid-phase microextraction (SPME) procedure was employed for analysis, and VOC were identified using a gas chromatography method with mass spectrometric detection (GC/MS). Results revealed a broad spectrum of VOC in snow samples, including ethers, aldehydes, and aromatic and halogenated compounds, all of them active precursors for atmospheric reactions. Quantification was carried out for 11 aromatic and/or oxygenated compounds. Concentrations were found to be between 1.0 ± 0.2 ng/L (ethylbenzene) and 2.67 ± 0.06 mg/L (acetophenone), and limits of detection varied between 0.30 ng/L (benzene) and 78.2 ng/L (benzaldehyde). Principal component analysis was carried out to assess similarities between the sampling locations based on the types of species identified and concentration profiles. We discuss the implication of our results for atmosphere-snowpack interactions of VOC including back trajectory calculations for the sampling dates.

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Section: Introductionmentioning

confidence: 99%

Volatile organic compounds in snow in the Quebec‐Windsor Corridor

Kos¹,

Ariya²

2010

J. Geophys. Res.

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“…In many analytical procedures and catalytic reactions, the utilization of inert gases, such as nitrogen, helium, or argon, is unavoidable. Nitrogen is used in many applications, for example, purging gas in sampling methods, 1–3 carrier gas in diluting and gas generating systems, 4–9 in surface area measurements of porous materials, 10,11 as reactant in the Haber–Bosch process, 12 in cryogenic sampling applications, 13,14 and as carrier gas in gas chromatography (GC) 15–17 . Because in all of these applications the gas quality used is usually 5.0 (99.999% purity) or 6.0 (99.9999% purity), the remaining volatile organic compounds (VOCs) and water do not pose an interference to the different applications.…”

Section: Introductionmentioning

confidence: 99%

Determination of trace compounds and artifacts in nitrogen background measurements by proton transfer reaction time‐of‐flight mass spectrometry under dry and humid conditions

et al. 2021

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A qualitative analysis was applied for the determination of trace compounds at the parts per trillion in volume (ppt v ) level in the mass spectra of nitrogen of different qualities (5.0 and 6.0) under dry and humid conditions. This qualitative analysis enabled the classification and discovery of hundreds of new ions (e.g., [S x ]H + species) and artifacts such as parasitic ions and memory effects and their differentiation from real gas impurities. With this analysis, the humidity dependency of all kind of ions in the mass spectrum was determined. Apart from the inorganic artifacts previously discovered, many new organic ions were assigned as instrumental artifacts and new isobaric interferences could be elucidated. From 1140 peaks found in the mass range m/z 0-800, only 660 could be analyzed due to sufficient intensity, from which 463 corresponded to compounds. The number of peaks in nitrogen proton transfer reaction (PTR) spectra was similarly dominated by nonmetallic oxygenated organic compounds (23.5%) and hydrocarbons (24.1%) Regarding only gas impurities, hydrocarbons were the main compound class (50.2%). The highest contribution to the total ion signal for unfiltered nitrogen under dry and humid conditions was from nonmetallic oxygenated compounds. Under dry conditions, nitrogen-containing compounds exhibit the second highest contribution of 89% and 96% for nitrogen 5.0 and 6.0, respectively, whereas under humid conditions, hydrocarbons become the second dominant group with 69% and 86% for nitrogen 5.0 and 6.0, respectively. With the gathered information, a database can be built as a tool for the elucidation of instrumental and intrinsic gas matrix artifacts in PTR mass spectra and, especially in cases, where dilution with inert gases plays a significant role. K E Y W O R D Sgas impurities, gas traces, industrial gases, proton transfer reaction time-of-flight mass spectrometry, volatile organic compounds

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Current Awareness

2001

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Books, Reviews & Symposia; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (3 Weeks journals ‐ Search completed at 4th. July 2001)

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An automated purge and trap gas chromatography-mass spectrometry system for the sensitive shipboard analysis of volatile organic compounds in seawater

Cited by 22 publications

References 22 publications

Volatile organic compounds in snow in the Quebec‐Windsor Corridor

Volatile organic compounds in snow in the Quebec‐Windsor Corridor

Determination of trace compounds and artifacts in nitrogen background measurements by proton transfer reaction time‐of‐flight mass spectrometry under dry and humid conditions

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