Abstract
The concentration of 16 polycyclic aromatic hydrocarbons (PAHs) in the gasoline combustion products emitted into the atmosphere by internal combustion engines (ICE) has been measured using the gas chromatography method. The concentrations of PAHs in the exhaust gases sampled behind a catalytic converter has been determined when the ICE operates in five modes: idle mode, high speed mode, load mode, ICE cold start mode (engine warm-up) and transient mode. Using 92 RON, 95 RON and 98 RON gasoline the effect of the octane number of gasoline on the PAHs content in the exhaust gases has been revealed. The concentration of the most carcinogenic component (benzo(α)pyrene) in the exhaust gases behind a catalytic converter significantly exceeds a reference value of benzo(α)pyrene in the atmospheric air established by the WHO and the EU for ICE in the load mode.
Highlights
in the gasoline combustion products emitted into the atmosphere by internal combustion engines
The concentrations of polycyclic aromatic hydrocarbons (PAHs) in the exhaust gases sampled behind a catalytic converter has been determined when the
internal combustion engines (ICE) operates in five modes
Summary
The concentration of 16 polycyclic aromatic hydrocarbons (PAHs) in the gasoline combustion products emitted into the atmosphere by internal combustion engines (ICE) has been measured using the gas chromatography method. Несмотря на чрезвычайную опасность канцерогенных веществ класса ПАУ для организма человека и окружающей среды, работ по исследованию их образования и содержания в отработавших газах автомобильных двигателей крайне мало. 1. Принципиальная схема системы отбора проб ПАУ из выхлопной трубы двигателя до и после каталитического нейтрализатора: 1 – двигатель внутреннего сгорания; 2 – запорный кран; 3 – влагоотделители; 4 – колбы; 5 – ротаметр; 6 – струйный насос (эжектор); 7 – резервуары для сбора и слива конденсата; 8 – вентиляторы; 9 – ловушка с сорбентом; 10 – каталитический нейтрализатор
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