When the harvested leaves are cured and dried, compounds within them are converted into tobacco-specific nitrosamines (TSNAs), a class of well-known and intensely studied carcinogens.
Biaggi now leads title-holder Checa by one point in the standings after Checa was forced to change his wet tyres for a dry compound during race two and could finish only 17th.
For hit sequence identification, all solution was first evaporated by vacuum centrifugation and the dry compound in each well was dissolved in 20 μL of a 75:25 mixture of water/CH3CN containing 0.1% TFA.
Next, further feather out the edges of the dry compound.
Because of the extensive crosslinking and agglomeration during compounding and the fact that most water was evaporated after drying the compounds, the SPC phase was not able to flow like a plastic in the subsequent processing.
At each race, Pirelli chooses two of the dry compounds to supply to all the teams, with one that is suited to the pavement of the particular track.
The setup is based on degassing the solvent by sonication at reduced pressure, and then transferring it, on a vacuum line, to the electrochemical cell containing the dry compounds, through a previously activated alumina column.
Divalent americium is obtained only in dry compounds and non-aqueous solutions (acetonitrile).
Tyre supplier Bridgestone brought four different tyre types to the race: two dry compounds, the Soft and the Mediums and two wet-weather compounds, the Hard and the Softs.
Tyre supplier Pirelli brought four different tyre types to the race: two dry compounds, the soft "primes" and the super-soft "options" and two wet-weather compounds, the intermediate and full wet.
