Relevant bibliographies by topics / Reactive species HONO and HOBr

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Academic literature on the topic 'Reactive species HONO and HOBr'

Author: Grafiati
Published: 25 May 2024
Last updated: 31 July 2025

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Journal articles on the topic "Reactive species HONO and HOBr"

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Piot, M., and R. von Glasow. "The chemistry influencing ODEs in the Polar Boundary Layer in spring: a model study." Atmospheric Chemistry and Physics Discussions 8, no. 2 (2008): 7391–453. http://dx.doi.org/10.5194/acpd-8-7391-2008.

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Abstract. Near-total depletions of ozone have been observed in the Arctic spring since the mid 1980s. The autocatalytic cycles involving reactive halogens are now recognized to be of main importance for Ozone Depletion Events (ODEs) in the Polar Boundary Layer (PBL). We present sensitivity studies using the model MISTRA in the box-model mode on the influence of chemical species on these ozone depletion processes. In order to test the sensitivity of the chemistry under polar conditions, we compared base runs undergoing fluxes of either Br2, BrCl, or Cl2 to induce ozone depletions, with similar
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Gil, Junsu, Meehye Lee, Jeonghwan Kim, Gangwoong Lee, Joonyoung Ahn, and Cheol-Hee Kim. "Simulation model of Reactive Nitrogen Species in an Urban Atmosphere using a Deep Neural Network: RNDv1.0." Geoscientific Model Development 16, no. 17 (2023): 5251–63. http://dx.doi.org/10.5194/gmd-16-5251-2023.

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Abstract. Nitrous acid (HONO) plays an important role in the formation of ozone and fine aerosols in the urban atmosphere. In this study, a new simulation approach is presented to calculate the HONO mixing ratios using a deep neural technique based on measured variables. The Reactive Nitrogen Species using a Deep Neural Network (RND) simulation is implemented in Python. The first version of RND (RNDv1.0) is trained, validated, and tested with HONO measurement data obtained in Seoul, South Korea, from 2016 to 2021. RNDv1.0 is constructed using k-fold cross validation and evaluated with index of
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Ran, Zhu, Yanan Hu, Yuanzhe Li, et al. "Formation of reactive nitrogen species promoted by iron ions through the photochemistry of a neonicotinoid insecticide." Atmospheric Chemistry and Physics 24, no. 20 (2024): 11943–54. http://dx.doi.org/10.5194/acp-24-11943-2024.

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Abstract. Nitrous acid (HONO) and nitrogen oxides (NOx=NO+NO2) are important atmospheric pollutants and key intermediates in the global nitrogen cycle, but their sources and formation mechanisms are still poorly understood. Here, we investigated the effect of soluble iron (Fe3+) on the photochemical behavior of a widely used neonicotinoid (NN) insecticide, nitenpyram (NPM), in the aqueous phase. The yields of HONO and NOx increased significantly when NPM solution was irradiated in the presence of iron ions (Fe3+). We propose that the enhanced HONO and NO2 emissions from the photodegradation of
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Vakhrusheva, Tatyana V., Daria V. Grigorieva, Irina V. Gorudko, et al. "Enzymatic and bactericidal activity of myeloperoxidase in conditions of halogenative stress." Biochemistry and Cell Biology 96, no. 5 (2018): 580–91. http://dx.doi.org/10.1139/bcb-2017-0292.

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Myeloperoxidase (MPO), found mainly in neutrophils, is released in inflammation. MPO produces reactive halogen species (RHS), which are bactericidal agents. However, RHS overproduction, i.e., halogenative stress, can also damage host biomolecules, and MPO itself may be targeted by RHS. Therefore, we examined the susceptibility of MPO to inactivation by its primary products (HOCl, HOBr, HOSCN) and secondary products such as taurine monochloramine (TauCl) and taurine monobromamine (TauBr). MPO was dose-dependently inhibited up to complete inactivity by treatment with HOCl or HOBr. TauBr diminish
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Fang, Yuyu, and Wim Dehaen. "Fluorescent Probes for Selective Recognition of Hypobromous Acid: Achievements and Future Perspectives." Molecules 26, no. 2 (2021): 363. http://dx.doi.org/10.3390/molecules26020363.

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Reactive oxygen species (ROS) have been implicated in numerous pathological processes and their homeostasis facilitates the dynamic balance of intracellular redox states. Among ROS, hypobromous acid (HOBr) has a high similarity to hypochlorous acid (HOCl) in both chemical and physical properties, whereas it has received relatively little attention. Meanwhile, selective recognition of endogenous HOBr suffers great challenges due to the fact that the concentration of this molecule is much lower than that of HOCl. Fluorescence-based detection systems have emerged as very important tools to monito
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Chai, Jiajue, David J. Miller, Eric Scheuer, et al. "Isotopic characterization of nitrogen oxides (NO<sub><i>x</i></sub>), nitrous acid (HONO), and nitrate (<i>p</i>NO<sub>3</sub><sup>−</sup>) from laboratory biomass burning during FIREX." Atmospheric Measurement Techniques 12, no. 12 (2019): 6303–17. http://dx.doi.org/10.5194/amt-12-6303-2019.

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Abstract. New techniques have recently been developed and applied to capture reactive nitrogen species, including nitrogen oxides (NOx=NO+NO2), nitrous acid (HONO), nitric acid (HNO3), and particulate nitrate (pNO3-), for accurate measurement of their isotopic composition. Here, we report – for the first time – the isotopic composition of HONO from biomass burning (BB) emissions collected during the Fire Influence on Regional to Global Environments Experiment (FIREX, later evolved into FIREX-AQ) at the Missoula Fire Science Laboratory in the fall of 2016. We used our newly developed annular de
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Meusel, Hannah, Alexandra Tamm, Uwe Kuhn, et al. "Emission of nitrous acid from soil and biological soil crusts represents an important source of HONO in the remote atmosphere in Cyprus." Atmospheric Chemistry and Physics 18, no. 2 (2018): 799–813. http://dx.doi.org/10.5194/acp-18-799-2018.

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Abstract. Soil and biological soil crusts can emit nitrous acid (HONO) and nitric oxide (NO). The terrestrial ground surface in arid and semiarid regions is anticipated to play an important role in the local atmospheric HONO budget, deemed to represent one of the unaccounted-for HONO sources frequently observed in field studies. In this study HONO and NO emissions from a representative variety of soil and biological soil crust samples from the Mediterranean island Cyprus were investigated under controlled laboratory conditions. A wide range of fluxes was observed, ranging from 0.6 to 264 ng m−
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Dyson, Joanna E., Graham A. Boustead, Lauren T. Fleming, et al. "Production of HONO from NO<sub>2</sub> uptake on illuminated TiO<sub>2</sub> aerosol particles and following the illumination of mixed TiO<sub>2</sub>∕ammonium nitrate particles." Atmospheric Chemistry and Physics 21, no. 7 (2021): 5755–75. http://dx.doi.org/10.5194/acp-21-5755-2021.

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Abstract. The rate of production of HONO from illuminated TiO2 aerosols in the presence of NO2 was measured using an aerosol flow tube system coupled to a photo-fragmentation laser-induced fluorescence detection apparatus. The reactive uptake coefficient of NO2 to form HONO, γNO2→HONO, was determined for NO2 mixing ratios in the range 34–400 ppb, with γNO2→HONO spanning the range (9.97 ± 3.52) × 10−6 to (1.26 ± 0.17) × 10−4 at a relative humidity of 15 ± 1 % and for a lamp photon flux of (1.63 ± 0.09) ×1016 photons cm−2 s−1 (integrated between 290 and 400 nm), which is similar to midday ambien
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Zhang, Li, Qinyi Li, Tao Wang, et al. "Combined impacts of nitrous acid and nitryl chloride on lower-tropospheric ozone: new module development in WRF-Chem and application to China." Atmospheric Chemistry and Physics 17, no. 16 (2017): 9733–50. http://dx.doi.org/10.5194/acp-17-9733-2017.

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Abstract. Nitrous acid (HONO) and nitryl chloride (ClNO2) – through their photolysis – can have profound effects on the nitrogen cycle and oxidation capacity of the lower troposphere. Previous numerical studies have separately considered and investigated the sources/processes of these compounds and their roles in the fate of reactive nitrogen and the production of ozone (O3), but their combined impact on the chemistry of the lower part of the troposphere has not been addressed yet. In this study, we updated the WRF-Chem model with the currently known sources and chemistry of HONO and chlorine
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Yi, Hongming, Mathieu Cazaunau, Aline Gratien, et al. "Intercomparison of IBBCEAS, NitroMAC and FTIR analyses for HONO, NO<sub>2</sub> and CH<sub>2</sub>O measurements during the reaction of NO<sub>2</sub> with H<sub>2</sub>O vapour in the simulation chamber CESAM." Atmospheric Measurement Techniques 14, no. 8 (2021): 5701–15. http://dx.doi.org/10.5194/amt-14-5701-2021.

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Abstract. We report on applications of the ultraviolet-light-emitting-diode-based incoherent broadband cavity-enhanced absorption spectroscopy (UV-LED-IBBCEAS) technique for optical monitoring of HONO, NO2 and CH2O in a simulation chamber. Performance intercomparison of UV-LED-IBBCEAS with a wet chemistry-based NitroMAC sensor and a Fourier transform infrared (FTIR) spectrometer has been carried out on real-time simultaneous measurement of HONO, NO2 and CH2O concentrations during the reaction of NO2 with H2O vapour in CESAM (French acronym for Experimental Multiphasic Atmospheric Simulation Ch
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Dissertations / Theses on the topic "Reactive species HONO and HOBr"

1

Tchana, betnga Wilfried. "Développement d'instrumentation pour une spectroscopie simultanée THz et IR : application à l'équilibre de HONO." Electronic Thesis or Diss., Université Paris Cité, 2023. http://www.theses.fr/2023UNIP7134.

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La mesure des concentrations d'espèces traces, susceptibles d'avoir un impact notable sur la santé, le climat ou la stabilité de la couche d'ozone constitue un véritable défi. Les prochaines missions spatiales, prévues à haute sensibilité (FORUM et IASI-NG), apporteront un progrès seulement si les paramètres spectraux nécessaires sont disponibles. Pour certaines espèces réactives, telles que l'acide nitreux (HONO) et l'acide hypobromeux (HOBr), les données spectroscopiques sont incomplètes ou quasiment inexistantes. Le défi dans cette thèse consiste à obtenir des paramètres spectroscopiques qu
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