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pyrolysis |
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pyrolysis [pə′räl·ə·səs] (chemistry) The breaking apart of complex molecules into simpler units by the use of heat, as in the pyrolysis of heavy oil to make gasoline. Also known as thermolysis. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The marked accumulation of metals was also reflected by more elevated content of PAHs in snails caged at sites 4 and 5 and, for pyrolitic combustion-derived congeners, also in organisms exposed at site 3. The ignition of the oil produces pyrolitic and lustrous carbon deposits on the mold surfaces, which improves the sand peel from the casting while fewer oxidizing defects occur in the mold cavity. Pyrolitic torches give purity and system control, but can be dangerous and require special permits because they have a hydrogen base. |
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