Experimental investigation of particle concentration using mass and optical
Santrauka
Devices of various design and measuring methods are applied for determining particle matter (PM) concentration. Therefore, it is important to know measuring precision of different measuring devices. Measurements were carried out by a recognized and widely used mass as well as the optical method. Materials commonly occurring in technological processes were used for investigation: particles of wood, cement, quartz sand and metal from polishing processes, clay and charcoal particles. Besides, the concentration of PM at one of the most bustling crossroads of Vilnius city was measured to estimate and compare the results of the mentioned methods and evaluate their suitability for measuring very low concentrations of PM. Measuring results of PM concentration are compared and estimated in this work, and coefficients, showing measuring differences among different devices and methods, are given and measuring errors are rated.