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The VOC Solvents Emissions Directive was the main policy instrument for the reduction of industrial emissions of volatile organic compounds (VOCs) in the European Union. It covers a wide range of solvent-using activities, e.g. printing, surface cleaning, vehicle coating, dry cleaning and manufacture of footwear and pharmaceutical products.
Dodder seedlings show direct growth toward tomato plants (Lycopersicon esculentum) and, specifically, tomato plant volatile organic compounds. This was tested by growing a dodder weed seedling in a contained environment, connected to two different chambers. One chamber contained tomato VOCs while the other had artificial tomato plants.
Indoor materials such as gypsum boards or carpet act as VOC 'sinks', by trapping VOC vapors for extended periods of time, and releasing them by outgassing. The VOCs can also undergo transformation at the surface through interaction with ozone. [42] In both cases, these delayed emissions can result in chronic and low-level exposures to VOCs. [50]
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Non-methane volatile organic compounds (NMVOCs) are a set of organic compounds that are typically photochemically reactive in the atmosphere—marked by the exclusion of methane. [1] NMVOCs include a large variety of chemically different compounds, such as benzene , ethanol , formaldehyde , cyclohexane , 1,1,1-trichloroethane and acetone . [ 2 ]
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note that these three reactions are what forms the ozone molecule, and will occur the same way in the oxidation of CO or VOCs case. The net reaction in this case is then: CO + 2 O 2 → CO 2 + O 3. The amount of ozone produced through these reactions in ambient air can be estimated using a modified Leighton relationship.
Numerous attempts have been made to convert ethane directly to vinyl chloride. [2] Ethane, which is even more readily available than ethylene, is a potential precursor to vinyl chloride. The conversion of ethane to vinyl chloride has been demonstrated by various routes: [2] High-temperature chlorination: H 3 C−CH 3 + 2 Cl 2 → H 2 C=CHCl + 3 HCl