摘要：

The cigarette smoke aerosol is a lightly charged, highly concentrated matrix of submicron particles contained in a gas with each particle being a multicompositional collection of compounds arising from distillation, pyrolysis, and combustion of tobacco . Methods used to generate and trap the smoke aerosol exert profound effects on the composition of the condensate . Standardization of smoking parameters has minimized the variability resulting from artificial smoking; however, the traps used to collect cigarette smoke remain a major contributor to non-reproducibility . Numerous traps, including the Cambridge pad, electro- static precipitator, jet impactor, cold traps, solid adsorbents and solvent traps have been used to collect mainstream smoke . Artifact formation is a major drawback associated with many of the trapping procedures . 43

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