Articles with "trace gases" as a keyword



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Inter-annual Variation of Ambient Ammonia and Related Trace Gases in Delhi, India

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Published in 2017 at "Bulletin of Environmental Contamination and Toxicology"

DOI: 10.1007/s00128-017-2058-x

Abstract: In this study, ambient NH3, NO, NO2, CO and SO2 were measured continuously from February, 2008, to December, 2016. The annual average mixing ratios (mole/mole) of NH3, NO, NO2, CO and SO2 were 17.8 ± 3.4 ppb; 21.2 ± 2.3 ppb,… read more here.

Keywords: annual variation; trace gases; ambient; nh3 no2 ... See more keywords
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Seasonal cycles in baseline mixing ratios of a large number of trace gases at the Mace Head, Ireland atmospheric research station

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Published in 2020 at "Atmospheric Environment"

DOI: 10.1016/j.atmosenv.2020.117531

Abstract: Abstract A flexible approach for quantifying average long-term changes and seasonal cycles has been applied to the baseline mixing ratios of thirty-two trace gases monitored at the Atmospheric Research Station located at Mace Head, Ireland… read more here.

Keywords: atmospheric research; baseline mixing; trace gases; mixing ratios ... See more keywords
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Association of aerosols, trace gases and black carbon with mortality in an urban pollution hotspot over central Indo-Gangetic Plain

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Published in 2021 at "Atmospheric Environment"

DOI: 10.1016/j.atmosenv.2020.118088

Abstract: Abstract The short term effect of multiple air pollutants e.g. aerosols (black carbon, BC; PM2.5 and PM10) and trace gases (NO2, SO2, and O3) on all-cause mortality was systematically investigated in a typical urban pollution… read more here.

Keywords: black carbon; trace gases; mortality; effect ... See more keywords
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Sensitive spectroscopic breath analysis by water condensation.

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Published in 2018 at "Journal of breath research"

DOI: 10.1088/1752-7163/aad207

Abstract: Breath analysis has great potential for becoming an important clinical diagnosis method due to its friendly and non-invasive way of sample collection. Hundreds of endogenous trace gases (volatile organic compounds (VOCs)) are present in breath,… read more here.

Keywords: breath; water; sensitive spectroscopic; trace gases ... See more keywords
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On-Chip Detection of Trace Gases Using Photonic Matched Filters

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Published in 2019 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2019.2894035

Abstract: This theoretical modeling and simulation the design and projected performance of an on-chip detector of trace gases using photonic matched filters, with operation in the 3–5-μm mid-infrared range. The thermo-optically tuned multi-Sagnac loop Mach–Zehnder interferometer… read more here.

Keywords: matched filters; trace gases; using photonic; photonic matched ... See more keywords
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Unsupervised Sparse Unmixing of Atmospheric Trace Gases From Hyperspectral Satellite Data

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Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2022.3141551

Abstract: In this letter, a new approach for the retrieval of the vertical column concentrations of trace gases from hyperspectral satellite observations is proposed. The main idea is to perform a linear spectral unmixing by estimating… read more here.

Keywords: trace gases; gases hyperspectral; unsupervised sparse; sparse unmixing ... See more keywords
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Tropospheric NO2 Pollution Monitoring with the GF-5 Satellite Environmental Trace Gases Monitoring Instrument over the North China Plain during Winter 2018–2019

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Published in 2021 at "Atmosphere"

DOI: 10.3390/atmos12030398

Abstract: The Environmental Trace Gases Monitoring Instrument (EMI) is a high-spectral-resolution payload onboard the latest pathfinder mission GaoFen-5, designed specifically for the monitoring of global atmospheric trace gas compositions and trends This study describes a comparative… read more here.

Keywords: gases monitoring; monitoring instrument; trace gases; trace ... See more keywords