Study on Individual PAHs Content in Ultrafine Particles from Solid Fractions of Diesel and Biodiesel Exhaust Fumes

Table 1

Fuel and biofuel properties.

Fuel
Appearance	Yellow liquid
Boiling point	347°C
The temperature of freezing	0÷−300 °C
Flash point	Not less than 120°C
Ignition temperature	Under 250°C
Limit of explosiveness	The product does not pose a risk of explosion
Vapour pressure in temp.	50°C: < 1 kPa
Density (6)	0.860 ÷ 0.900 g cm^−3
Kinetic viscosity (20)	3.5–5 mm^2 s^−1
Solubility	Insoluble in water; soluble in most organic solvents
Heat of combustion	ca. 40 190 kJ/kg
Biofuel
Fatty acid (Rapeseed) Methyl Esters (RME) content	96.5% (by mass)
Density at 15°C	max. 900 kg/m^3
Viscosity at 40°C	max 5.00 mm^2/s
Flash point	101°C
Cetane number	51.0
Specific energy	37.7 MJ/kg