Like petroleum combustion exhaust, cigarette smoke is a
very complex chemical mixture that contains volatile,
semi-volatile and non-volatile compounds, the latter associated
with particles. Some 400-500 gaseous compounds
and 3500 particulate phase compounds have been identified
in cigarette smoke. Similarly, gasoline and diesel
exhausts contain hundreds of gas phase compounds,
although not all of the compounds present are identifiable.
Despite many analytic studies, vehicle particulate
matter has only been partially analyzed. Still, of the fraction
analyzed, hundreds of organic compounds and many
inorganic compounds have been identified in exhaust particles.
More appear as the particles age in the atmosphere.
Many of the known toxic compounds in tobacco smoke
are also emitted from combustion of petroleum hydrocarbons,
so there is significant overlap in the lists of compounds
that have been identified in these mixtures to date.
The key difference is that tobacco, being a biological
product, contains much more nitrogen than does crude or
refined petroleum, in which nitrogen is rare. Thus, tobacco
and tobacco smoke contain several classes of nitrogencontaining
chemicals that are not present in petroleum
fuels and their exhausts. Some of these are toxicologically
i m p o rtant, associated with bladder cancer and other
health effects. Thus, there is only a partial parallel in
chemical composition, and some of the differences are
sure to be important ones.
Following are two lists. In the first list, Table 1, are groups
of toxins that are found in both tobacco smoke and petroleum
vehicle exhaust. This list is not intended to be comprehensive,
it is focused mostly on carcinogens and other
important toxic substances. The second list identifies
some classes of chemicals that are associated with tobacco
smoke, but not exhaust. Again, important compounds
from a toxicological point of view were selected.
The list in Table 2 isn't perfectly exclusive since a few of
these compounds were identified by the International
Agency for Research on Cancer as possibly present in
diesel exhaust. However, the carcinogenic nitrosamines
derived from nicotine are a very important difference.
There are also some groups of chemicals that are present
in vehicle exhaust but not tobacco, such as hopanes
and steranes, but little to nothing is known about them
toxicologically.
http://www.energyindependencenow.org/pdf/fs/EIN-TobaccoCarExhaust.pdf
Filthy! Because of the hypocrisy, filfthy.
