engleski

Comparison between beta attenuation, light-scattering and gravimetric methods for sampling PM2.5 fraction collected at Urinj, Kostrena, Croatia

The initial measurements of hourly and daily PM2.5 fraction obtained by beta attenuation (BAM) and light-scattering (LSM) methods are reported. Daily concentrations obtained by BAM and LSM are compared with gravimetric method (GM). For gravimetric method, the samples were collected on stretched Teflon filters in 24 h period. Sampling was performed at Urinj during a continuously 16-day period in July, and 10-day period in October/November 2019. Urinj is industrial area of a Croatian municipality Kostrena (Kvarner Bay, Croatia) with an active oil refinery and an oil-fired power plant. The average daily PM2.5 concentrations was (9.35 ± 2.12) µgm-3 by the gravimetric method, then (10.85 ± 3.29) µgm-3 by the light scattering method and (7.34 ± 3.62) µgm-3 by the beta attenuation method. Generally, the light-scattering results are higher (14%), and the beta attenuation results are lower (22%) than results obtained by gravimetric method. The statistical methods showed that there is no statistically significant difference among the daily results. The purpose of this analysis was to evaluate the suitability of our new portable real-time detector designed to measure particulate matter dynamics in outdoor and indoor environment by lightscattering method (LSM).

PM2, 5, beta attenuation, light-scattering method, gravimetric method

https://www.rad-conference.org/Book_of_Abstracts- RAD_2020.pdf(p.38)