Metody grawimetryczne i optyczne w pomiarach stężenia aerozoli
The use of optic and gravimetric methods relevant in aerosol concentration measurements

Summary/Abstract: According to the data of the Statistics Poland on employees exposed to the risks arising from work environment at the end of 2019, the second most frequent harmful factor was dust, to which 50.4 thousand people were exposed (15.9%). The assessment of exposure to dust in the work environment consists in performing gravimetric measurements of concentrations at workstations for the identified dust types, determining the dust exposure indicators and comparing the obtained exposure indicator values with the values of the maximum allowable dust concentrations. The disadvantage of the gravimetric method is the lack of information about changes in concentration over time, susceptibility to additional emission sources, long time needed to obtain the result and the inability to conduct continuous monitoring.Dust concentration meters presenting real-time or near to real-time measurement data are finding more and more applications in monitoring of the external environment and working environment. Small low-cost sensors are already produced on a large scale, which can be used to produce relatively accurate environmental meters, as well as stationary and mobile sensor networks. Such devices are also not without flaws, but they can provide important support for the gravimetric assessment of dust concentration at workstations.

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