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1,019 Newest Publications about the topic ozone

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Twenty years of ambient observations of nitrogen oxides and specified hydrocarbons in air masses dominated by traffic emissions in Germany

04-May-2016 | Christian Ehlers; Dieter Klemp; Franz Rohrer; Djuro Mihelcic; Robert Wegener; Astrid Kiendler-Scharr; Andreas Wahner, Faraday Discussions, 2016

The analysis of the individual composition of hydrocarbon (VOC) mixtures enables us to transform observed VOC-concentrations into their respective total VOC-reactivity versus OH radicals (RVOC = Σ(kOH+VOCi × [VOCi])). This is particularly useful because local ozone production essentially depends ...

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Ozone production chemistry in the presence of urban plumes

26-Apr-2016 | W. H. Brune; B. C. Baier; J. Thomas; X. Ren; R. C. Cohen; S. E. Pusede; E. C. Browne; A. H. Goldstein; D. R. Gentner ..., Faraday Discussions, 2016

Ozone pollution affects human health, especially in urban areas on hot sunny days. Its basic photochemistry has been known for decades and yet it is still not possible to correctly predict the high ozone levels that are the greatest threat. The CalNex_SJV study in Bakersfield CA in May/June 2010 ...

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Insights into the Electronic Structure of Ozone and Sulfur Dioxide from Generalized Valence Bond Theory: Addition of Hydrogen Atoms

26-Apr-2016 | Beth A. Lindquist; Tyler Y. Takeshita; Thom H. Dunning, Jr., Journal of Physical Chemistry A, 2016

Ozone (O3) and sulfur dioxide (SO2) are valence isoelectronic species, yet their properties and reactivities differ dramatically. In particular, O3 is highly reactive, whereas SO2 is chemically relatively stable. In this paper, we investigate serial addition of hydrogen atoms to both the terminal ...

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Combining Land-Use Regression and Chemical Transport Modeling in a Spatiotemporal Geostatistical Model for Ozone and PM2.5

26-Apr-2016 | Meng Wang; Paul D. Sampson; Jianlin Hu; Michael Kleeman; Joshua P. Keller; Casey Olives; Adam A. Szpiro; Sverre Veda ..., Environmental Science & Technology, 2016

Assessments of long-term air pollution exposure in population studies have commonly employed land-use regression (LUR) or chemical transport modeling (CTM) techniques. Attempts to incorporate both approaches in one modeling framework are challenging. We present a novel geostatistical modeling ...

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Sustainability, Vol. 8, Pages 389: Analysis of Environmental Impact for Concrete Using LCA by Varying the Recycling Components, the Compressive Strength and the Admixture Material Mixing

20-Apr-2016 | Kim, Taehyoung ; Tae, Sungho ; Chae, Chang U, Sustainability, 2016

Concrete is a type of construction material in which cement, aggregate, and admixture materials are mixed. When cement is produced, large amounts of substances that impact the environment are emitted during limestone extraction and clinker manufacturing. Additionally, the extraction of natural ...

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α-Pinene Autoxidation Products May Not Have Extremely Low Saturation Vapor Pressures Despite High O:C Ratios

19-Apr-2016 | Theo Kurtén; Kirsi Tiusanen; Pontus Roldin; Matti Rissanen; Jan-Niclas Luy; Michael Boy; Mikael Ehn; Neil Donahue, Journal of Physical Chemistry A, 2016

COSMO-RS (conductor-like screening model for real solvents) and three different group-contribution methods were used to compute saturation (subcooled) liquid vapor pressures for 16 possible products of ozone-initiated α-pinene autoxidation, with elemental compositions C10H16O4–10 and ...

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Combined Effect of Ozone Treatment and Modified Atmosphere Packaging on Antioxidant Defense System of Fresh‐Cut Green Peppers

16-Apr-2016 | Junran Chen, Yunfeng Hu, Jianming Wang, Hanyan Hu, Hanyuan Cui, Journal of Food Processing and Preservation, 2016

Abstract The changes in respiration rates, malondialdehyde (MDA) content and antioxidant enzyme activities of fresh‐cut green peppers treated with ozone (6.42 mg/cm3, 15 min), modified atmosphere packaging (MAP; 3% O2, 4% CO2 and 93% N2) and ozone + MAP during storage at 5C for 21 days were ...

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Ozone uptake on glassy, semi-solid and liquid organic matter and the role of reactive oxygen intermediates in atmospheric aerosol chemistry

13-Apr-2016 | Thomas Berkemeier; Sarah Steimer; Karl Ulrich Krieger; Thomas Peter; Ulrich Pöschl; Markus Ammann; Manabu Shiraiwa, Physical Chemistry Chemical Physics, 2016

Heterogeneous and multiphase reactions of ozone are important pathways for chemical ageing of atmospheric organic aerosols. To demonstrate and quantify how moisture-induced phase changes can affect the gas uptake and chemical transformation of organic matter, we apply a kinetic multi-layer model ...

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Thiol Adsorption on and Reduction of Copper Oxide Particles and Surfaces

13-Apr-2016 | Yiwen Wang; Jisun Im; Jason W. Soares; Diane M. Steeves; James E. Whitten, Langmuir, 2016

The adsorption of 1-dodecanethiol at room temperature and at 75 °C on submicron cuprous and cupric oxide particles suspended in ethanol has been investigated by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and transmission electron microscopy. Thiol adsorption occurs in all cases ...

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GOLDEN 2-LIKE transcription factors for chloroplast development affect ozone tolerance through the regulation of stomatal movement [Plant Biology]

12-Apr-2016 | Yukari Nagatoshi; Nobutaka Mitsuda; Maki Hayashi; Shin-ichiro Inoue; Eiji Okuma; Akihiro Kubo; Yoshiyuki Murata; Mit ..., Proceedings of the National Academy of Sciences current issue, 2016

Stomatal movements regulate gas exchange, thus directly affecting the efficiency of photosynthesis and the sensitivity of plants to air pollutants such as ozone. The GARP family transcription factors GOLDEN 2-LIKE1 (GLK1) and GLK2 have known functions in chloroplast development. Here, we show ...

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