Tracer-based characterization of source variations of ambient isoprene mixing ratios in a hillocky megacity, India, influenced by the local meteorology

Yadav, Ravi; Beig, Gufran; Anand, Vrinda; Kalbande, Ritesh; Maji, Sujit

doi:10.1016/j.envres.2021.112465

Cited by 8 publications

(2 citation statements)

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“…Fandino et al [ 21 ] achieved the LODs in the range of 100–200 ppb for arenes quantification in an argon discharge. It is noteworthy that currently achievable LODs are quite comparable to these obtained by PTR-MS (10–100 ppb) according to previous publications [ 29 , 30 , 31 ]. This demonstrates the prospects of further advancements in the GD ionization source in molecular mass spectrometry.…”

Section: Resultssupporting

confidence: 81%

Volatile Organic Compound Fragmentation in the Afterglow of Pulsed Glow Discharge in Ambient Air

et al. 2022

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Glow discharge (GD) source gained an increased level of attention in relation to the analysis of volatile organic compounds (VOCs) since past work showed that this soft ionization method allowed direct analysis of VOCs with minimal fragmentation, however, the issue of fragmentation was not previously studied in detail. The aim of the present work was to investigate the effect of discharge conditions on VOC fragmentation in the system consisting of the cell with pulsed glow discharge and a time-of-flight mass spectrometer. Ionization of VOCs of different classes (hydrocarbons, alcohols, esters, and carboxylic acids) was investigated. A copper cathode with flat geometry was used. VOCs were ionized in the afterglow of short pulse glow discharge in the air. The use of discharge afterglow significantly reduces or eliminates the effects of ionization mechanisms other than Penning process, in particular, electron ionization. This significantly reduced VOC fragmentation and provided rather low limits of detection. Specific cluster formation was observed for alcohols and esters, which may facilitate their identification.

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Section: Resultssupporting

confidence: 81%

Volatile Organic Compound Fragmentation in the Afterglow of Pulsed Glow Discharge in Ambient Air

et al. 2022

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“…Moreover, it has been worsening mainly in low-and middle-income countries, driven by anthropogenic activities (Silva et al, 2016;Turnock et al, 2020). Surface O 3 naturally occurs in low amounts, but unhealthy O 3 is formed when high levels of anthropogenic trace gases, such as VOCs and CO, oxidize in the presence of solar flux and a sufficient amount of NOx in the lower troposphere (Yadav et al, 2022) (Equation 1).…”

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confidence: 99%

Editorial: Anthropogenic trace gases and their linkages to meteorology and climate change

Yadav,

Anand,

Sahu

et al. 2024

Front. Sustain. Cities

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Characteristics of VOCs and their contribution to O3 and SOA formation across seasons over a metropolitan region in India

Kalbande

Yadav²,

Maji³

et al. 2022

Atmospheric Pollution Research

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Tracer-based characterization of source variations of ambient isoprene mixing ratios in a hillocky megacity, India, influenced by the local meteorology

Cited by 8 publications

References 82 publications

Volatile Organic Compound Fragmentation in the Afterglow of Pulsed Glow Discharge in Ambient Air

Volatile Organic Compound Fragmentation in the Afterglow of Pulsed Glow Discharge in Ambient Air

Editorial: Anthropogenic trace gases and their linkages to meteorology and climate change

Characteristics of VOCs and their contribution to O3 and SOA formation across seasons over a metropolitan region in India

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