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1,160 Newest Publications about the topic ozone

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The phase and interfacial properties of azeotropic refrigerants: the prediction of aneotropes from molecular theory

24-Mar-2017 | Wael A. Fouad; Lourdes F. Vega, Physical Chemistry Chemical Physics, 2017

The use of hydrofluorocarbons (HFCs) as alternative non-ozone depleting refrigerants for chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) has grown during the last couple of decades. Owing to their considerable global warming potential, a global deal has been reached recently to ...

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Hydraulic and disinfection efficiency of an ozonation contactor for a municipal water treatment plant using computational fluid dynamics

18-Mar-2017 | Shahram Niazi, Mansour Kalbasi, Alireza Bahramian, The Canadian Journal of Chemical Engineering, 2017

ABSTRACT Determination of hydrodynamic characteristics and disinfection efficiency are important factors in the operational study of the ozone contactors. In the present work, a full‐scale ozonation contactor for a municipal water treatment plant was simulated by computational fluid dynamics ...

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High-Pressure Ozone-Induced Dissociation for Lipid Structure Elucidation on Fast Chromatographic Timescales

15-Mar-2017 | Berwyck L. J. Poad; Martin R. Green; Jayne M. Kirk; Nick Tomczyk; Todd W. Mitchell; Stephen J. Blanksby, Analytical Chemistry, 2017

Ozone-induced dissociation (OzID) is a novel ion activation technology that exploits the gas-phase reaction between mass-selected ions and ozone inside a mass spectrometer to assign sites of unsaturation in complex lipids. Since it was first demonstrated [Thomas et al. Anal. Chem. 2008, 80, 303], ...

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Modified Method for Trapping and Analyzing 15N in NO Released from Soils

15-Mar-2017 | Ronghua Kang; Jan Mulder; Peter Dörsch, Analytical Chemistry, 2017

15N isotope tracing is an effective and direct approach to investigate sources of nitric oxide (NO) formed in soils. However, NO is highly reactive and rapidly converted to nitrogen dioxide (NO2) in the presence of ozone, making it impossible to directly measure 15N in NO. Various wet-chemical ...

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Treatment of reverse osmosis (RO) concentrate from an old landfill site by Fe0/PS/O3 process

14-Mar-2017 | Fangzhou Ji, Heng Zhang, Jun Li, Bo Lai, Journal of Chemical Technology & Biotechnology, 2017

Abstract An effective method for treatment of landfill leachate reverse osmosis (RO) concentrate by Fe0/PS/O3 process was investigated to decompose the refractory pollutants and improve the biodegradability. First, the operating conditions including Fe0 dosage, ozone aeration rate, PS (S2O82−) ...

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Co-occurrence of extremes in surface ozone, particulate matter, and temperature over eastern North America [Environmental Sciences]

14-Mar-2017 | Jordan L. Schnell; Michael J. Prather, Proceedings of the National Academy of Sciences current issue, 2017

Heat waves and air pollution episodes pose a serious threat to human health and may worsen under future climate change. In this paper, we use 15 years (1999–2013) of commensurately gridded (1° x 1°) surface observations of extended summer (April–September) surface ozone (O3), fine particulate ...

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An environment-friendly route to graphene oxide by concentrated ozone with improved catalytic performance

09-Mar-2017 | jin zhang; Ye Zhang; Ligong Zhou; Ying Yang; Xuekuan Li, New Journal of Chemistry, 2017

An environment-friendly approach is reported for synthesis of graphene oxide (GO) from powder graphite using concentrated ozone as oxidant. Oxygen was produced as by-product during the oxidizing process which could be considered as a completely green route. Furthermore, GO sheets show fascinating ...

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Investigation of the reaction of ozone with isoprene, methacrolein and methyl vinyl ketone using the HELIOS Chamber

09-Mar-2017 | Yangang Ren; Benoit Grosselin; Véronique Daële; Abdelwahid Mellouki, Faraday Discussions, 2017

The rate constants for the ozonolysis of isoprene (ISO), methacrolein (MACR) and methyl vinyl ketone (MVK) have been measured using the newly built large volume atmospheric simulation chamber at CNRS-Orleans (France), HELIOS (cHambrE de simuLation atmosphérique à Irradiation naturelle d’OrléanS). ...

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Seasonal prediction of US summertime ozone using statistical analysis of large scale climate patterns [Earth, Atmospheric, and Planetary Sciences]

07-Mar-2017 | Lu Shen; Loretta J. Mickley, Proceedings of the National Academy of Sciences current issue, 2017

We develop a statistical model to predict June–July–August (JJA) daily maximum 8-h average (MDA8) ozone concentrations in the eastern United States based on large-scale climate patterns during the previous spring. We find that anomalously high JJA ozone in the East is correlated with these ...

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Oxidant-Dependent Thermoelectric Properties of Undoped ZnO Films by Atomic Layer Deposition

07-Mar-2017 | Hyunho Kim; Zhenwei Wang; Mohamed N. Hedhili; Nimer Wehbe; Husam N. Alshareef, Chemistry of Materials, 2017

Extraordinary oxidant-dependent changes in the thermoelectric properties of undoped ZnO thin films deposited by atomic layer deposition (ALD) have been observed. Specifically, deionized water and ozone oxidants are used in the growth of ZnO by ALD using diethylzinc as a zinc precursor. No ...

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