By Walter Klöpffer, Burkhard Wagner, Klaus Günter Steinhäuser
This compilation at the degradation of 1,100 commercially vital chemical items is the 1st book to make this information publicly obtainable in a single booklet. the knowledge and annotations were painstakingly assembled over a 10-year interval in a collaboration among academia and regulatory experts. The paintings explains intimately the tools, together with computational ones, for the environmental evaluate of unstable and semi-volatile ingredients, and is rounded off with info tables of deterioration rates.A key source for brands and regulators of such substances.See all Editorial stories
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Extra resources for Atmospheric Degradation of Organic Substances: Data for Persistence and Long-range Transport Potential
The general importance of OH as the “detergent“ of the atmosphere relies on the fact that all compounds showing H-atoms or double bonds react with OH, albeit with reaction rate constants varying over a wide range from about 10–16 to 10–10 cm3 molecule–1 s–1. The upper limit roughly corresponds to the diffusion limit (each encounter leads to a reaction). Only saturated perhalogenated (F, Cl, Br) aliphatic hydrocarbons (and SF6) seem to be totally persistent towards the attack of OH-radicals; for these compounds, only the upper limits of kOH are given in the literature.
4 × 5 × 105 This value is typical for many substances of average reactivity and can, in the absence of other sinks, lead to long-range transport in the troposphere, at least within one hemisphere. Hexaﬂuorobenzene reacts slower than benzene by a factor of 10 and shows simple (Arrhenius-type) kinetics; it is thus concluded that no intermediate OHadduct formation is involved in this reaction . , the reaction with acetylene, Eq. 1 × 10–13 cm3 molecule–1 s–1 At low pressures, however, much lower rate constants are measured, suggesting much too high a persistence in the real atmosphere (troposphere).
BUA-Colloquium 25. November 2003. GDCh-Monographie, Bd. 28. Gesellschaft Deutscher Chemiker, Frankfurt am Main 2004, pp. 135–136. Bidleman, T. : Atmospheric Transport and Air-surface Exchange of Pesticides. Water, Air, Soil Pollut. 115 (1999) 115–166. ; Hites, R. ; Palm, W. ; Seiber, J. : Transformation of Pesticides in the Atmosphere: A State of the Art. Water, Air, Soil Pollut. 115 (1999) 218–243. ; Howard, P. ; Orlando, J. ; Wallington, T. : Quantitative Determination of Persistence in Air. ; Howard, P.
Atmospheric Degradation of Organic Substances: Data for Persistence and Long-range Transport Potential by Walter Klöpffer, Burkhard Wagner, Klaus Günter Steinhäuser