a method and a device for the extractive triboelecric measurement of dust and aerosols is provided . a partial gas stream is removed from a main stream and drawn through a triboelecric measuring chamber with a variable or constant temperature , at a variable or constant speed and with an abradant rotational movement . sensors are arranged in the measuring chamber in such a way that they are electrically insulated . the triboelecric effect begins when the gas stream that is loaded with dust particles and aerosols passes through the triboelecric measuring chamber , preferably in a cyclonic manner , moving rotationally , abradantly on the sensors . since gaseous components cannot be measured according to the triboelecric measuring principal , the temperature is controlled intermittently at a low temperature producing a signal which is caused by dust and aerosols , and at a higher temperature , producing a signal which is caused by dust alone .