METHOD OF EXPRESS DETERMINATION OF ANTI-KNOCK ADDITIVE IN MOTOR FUEL
OcheredkoYuliya A. - Ph.D. (Engineering), Associate Professor, Associate Professor of chemical Department , Tatishchev Astrakhan State University , 414056, Astrakhan, Tatishchev st. ,20a, jocheredko@yandex.ru
Matveeva(Kotlova) Anastasia A. - chemistry teacher, Astrakhan Secondary school No. 37, 414021,Astrakhan, Boevaya St., 81, bnastysha@yandex.ru
Matveev Alexey V. - Master's student , Tatishchev Astrakhan State University , 414056, Astrakhan, Tatishchev st. , 20a,
The proposed method for determining metals that enter fuel as a result of corrosion and as part of anti-knock additives allows determinations to be made outside the laboratory, and also without the involvement of highly qualified specialists. Exceeding the permissible concentrations of detectable metal ions leads to adverse consequences not only for transport, but also for the environment, where they can enter with fuel combustion products. This method for the determination of metal ions iron, manganese and lead is characterized by rapidity and selectivity of determination. The method is based on the visual contrast of the color transition during the interaction of the indicator agent with manganese, iron and lead ions contained in motor fuel. It is based on chromogenic reactions of the determined ions with indicator reagents. The express determinant consists of glass tubes filled with an indicator agent on a carrier, for which small silica gel granules were used, and the indicator agent for each ion of the metal being determined was prepared according to certain methods. The indicator composition is highly sensitive to compounds containing these metals, which allows them to be detected in a motor fuel sample with high accuracy. Using the express method, it is possible to determine metals outside laboratory conditions, at gas stations, bases, storage facilities and other enterprises that produce and consume motor fuels.
Key words: motor fuel, ferrocene, cymantrene, tetraethyl lead, antiknock agents, indicator, express determinant, silica gel granules.
