Characteristics of EGS and DEGS Polyesters in Packed GC Columns

Thermal stability of ethylene-propylene copolymer as stationary phase under chromatographic conditions

“…Cigarette smoke condensate (CSC) is known to be tumorigenic, and much work has been centered on the isolation of the biologically active compounds (1). Bioassays showed that a neutral subfraction of CSC, F-20, obtained by our fractionation procedure (Figure 1) had high tumorigenic activity (2)(3)(4). Since F-20 was shown to contain polynuclear aromatic hydrocarbons (PAH's) (5), the activity was attributed to the highly tumorigenic members of this class of compounds (6).…”

“…(2) after 34 h at 350 °C. (3) after 76 h at 350 °C products varies, although slowly, with temperature. But the decomposition rate is an exponential function of temperature and we are interested here in the order of magnitude.…”