Hydroxyl radical reaction rates

Gusten, H., Filby, W.G. and Schoaf, S., Prediction of Hydroxyl Radical Reaction Rates with Organic Compounds in the Gas Phase, Atmospheric Environ., 15 1763-1765 (1981). 

Atkinson R, Carter WPL, Aschmann SM, et al. 1985. Atmospheric fates of organic chemicals Prediction of ozone and hydroxyl radical reaction rates and mechanisms. Research Triangle Park, NC U.S. Environmental Protection Agency, Office of Research and Development. 

Guesten, H., Filby, W.G., Schoop, S. (1981) Prediction of hydroxyl radical reaction rates with organic compounds in the gas phase. Atmos. Environ. 15, 1763-1765. 

Kwok, W.S.C., Atkinson, R. (1995) Estimation of hydroxyl radical reaction rate constants for gas-phase organic compounds using a structure reactivity relationship an update. Atmos. Environ. 29, 1685-1695. 

FIGURE 3-13 Relations between conversion of nitric oxide to nitrogen dioxide and ozone, atomic oxygen, and hydroxyl-radical reaction rate constants. Reprinted with permission from Grosjean. ... 

Hodson J. 1988. The estimation of the photodegradation of organic compoundsby hydroxyl radical reaction rate constants obtained from nuclear magneticresonance spectroscopy chemical shift data. Chemosphere 17 2339- 2348. 

Baxley, J. S M. V. Henley, and J. R. Wells, The Hydroxyl Radical Reaction Rate Constant and Products of Ethyl 3-Ethoxypropionate, hit. J. Chem. Kinet., 29, 637-644 (1997). 

Hodson, J., The Estimation of the Photodegradation of Organic Compounds by Hydroxyl Radical Reaction Rate Constants Obtained from Nuclear Magnetic Resonance Spectroscopy Chemical Shift Data, Chemosphere, 17, 2339-2348 (1988). 

Kwok, E. S. C., and R. Atkinson, Estimation of Hydroxyl Radical Reaction Rate Constants for Gas-Phase Organic Compounds Using a Structure-Reactivity Relationship An Update, Atmos. Enriron., 29, 1685-1695 (1995). 

Oberg, T. (2005) A QSAR for the hydroxyl radical reaction rate constant validation, domain of application, and prediction. Atmos. Environ., 39, 2189—2200. 

The effect of pH on the hydroxyl radical reaction rate constants was studied in buffered solution at pH = 3.5, 7.0, and 11.0. As the pH increases above 9, the presence of alternate scavenger HOy will react with hydroxyl radicals, and the rate constant is nearly 300 times that of H202. The data for haloben-zenes showed that the reactivity of hydroxyl radical with these derivatives does not vary much among the compounds studied, and an average rate constant of 5.0 x 109 M 1 s 1 could be used for these compounds. 

Becker, K.H., Biehl, H.M., Bruckmann, P., Fink, E.H., Filhr, F., Klopffer, W., Zellner, R., Zetzsch, C. (1984) Hydroxyl radical reaction rate constants and tropospheric lifetimes of selected environmental chemicals. Kernforschungsanlage. Jillich, GmbH. November 1984, ISSN 0343-7639. 

PCBTF received an exemption from VOC regulations based on the fact that its atmospheric hydroxyl radical reaction rate is slower than that of ethane [25]. A VOC is defined as any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic add, metallic carbides or carbonates, and ammoniiun carbonate, which partidpates in atmospheric photochemical reactions [26]. A VOC exemption petition for BTF was filed with the EPA on March 11,1997. Volatile organic compounds (VOCs) emission is controlled by regulation in efforts to reduce the tropospheric air concentrations of ozone. 

TABLE 6.15 Hydroxyl Radical Reactions Rate Constants in Aqueous Solution... 

Figure 6.17 Illustration of relative rate data used for determining hydroxyl radical reaction rates. [Reproduced with permission from W. R. Haag and C. C. D. Yao, Environ. Sci. Technol. 26, 1005 (1992). Copyright 1992, American Chemical Society.]...

Using the literature value for carbofuran, hydroxyl radical reaction rate constants were calculated for the other five pesticides (Method II). 

An indirect method (Method I) was also enqiloyed to determine these hydroxyl radical reaction rate values. Since a relationship has been developed between the degradation rate of carbofuran and its initial concentration in the previous work. 

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