Method of express determination of the heavy metal content in motor fuel

A method of express determination of metals in motor fuel is proposed. These metals can get there in the composition of anti-knock additives or as a result of corrosion. The method allows making determinations outside the laboratory without involving highly qualified specialists. This method of metal determination combines analytical metrological characteristics with expressive-ness and selectivity of determination. The method is based on the visual contrast of the color transi-tion during the interaction of the indicator agents with manganese, iron and lead ions contained in motor fuel. It is based on chromogenic reactions of manganese, iron and lead with indicator agents. The express determinant is a glass tube filled with an indicator agent on a carrier. Small granules of silica gel were used as a carrier; an indicator agent for each metal ion was prepared according to cer-tain methods. The indicator composition has a high sensitivity to compounds containing these metals in its composition. It is possible to detect them in a sample of motor fuel. Using the express method, it is possible to determine metals outside the laboratory conditions, at petrol stations, bases, storage facilities and other enterprises that produce and consume motor fuels.

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