Hydrocabons

Diesel naturally contains various hydrocarbons, which can be classified into aliphatic and aromatic hydrocarbons. Of these, aromatics hydrocarbons directly influence the emission of particulate matter (PM).

At the same time, polycyclic aromatic hydrocarbons (PAH) are commonly found in diesel. Some studies have shown that PAH are a class of widespread environmental carcinogens. Thus, the reduction of PAH content is important for human health.

Bangladesh’s previous high-speed diesel (HSD) fuel specifications, BDS 344:2003 and BDS 344:2016 did not regulate PAH content. However, the latest national high-speed diesel fuel specification, BDS 344:2020 regulates the maximum PAH content at 8% m/m.

SGS Worldwide Fuel Survey results from diesel samples taken in 2011-2019 show four diesel sam