New Comprehensive Approach for Airborne Asbestos Characterisation and Monitoring.

0494424 - ÚCHP 2019 RIV DE eng J - Článek v odborném periodiku
Klán, M. - Pokorná, Petra - Havlíček, D. - Vik, O. - Racek, M. - Plocek, Jiří - Hovorka, J.
New Comprehensive Approach for Airborne Asbestos Characterisation and Monitoring.
Environmental Science and Pollution Research. Roč. 25, č. 30 (2018), s. 30488-30496. ISSN 0944-1344. E-ISSN 1614-7499
Grant CEP: GA ČR(CZ) GBP503/12/G147
Institucionální podpora: RVO:67985858 ; RVO:61388980
Klíčová slova: actinolite asbestos * naturally occurring asbestos * DRUM sampler
Obor OECD: Environmental sciences (social aspects to be 5.7); Inorganic and nuclear chemistry (UACH-T)
Impakt faktor: 2.914, rok: 2018

High concentrations of airborne asbestos in the ambient air are still a serious problem of air quality in numerous localities around the world. Since 2002, elevated concentrations of asbestos minerals of unknown origin have been detected in the ambient air of Pilsen, Czech Republic. To determine the asbestos fibre sources in this urban air, a systematic study was conducted. First, 14 bulk dust samples were collected in Pilsen at nine localities, and 6 bulk samples of construction aggregates for gravel production were collected in a quarry in the Pilsen-Litice district. The quarry is the largest quarry in the Pilsen region and the closest quarry to the built-up urban area. X-ray diffraction of the asbestos minerals revealed that monoclinic amphibole (MA, namely actinolite based on subsequent SEM-EDX analysis) in the bulk samples accounted for < 1–33% of the mass and that the highest values were found in the bulk dust samples from the railway platform of the Pilsen main railway station. Simultaneously, 24-h samples of airborne particulate matter (PM) at three localities in Pilsen were collected. Actinolite was identified in 40% of the PM samples. The relationship between the meteorology and presence of actinolite in the 24 PM10 samples was not proven, probably due to the long sampling integration time. Therefore, highly time-and-size-resolved PM sampling was performed. Second, sampling of size-segregated aerosols and measurements of the wind speed (WS), wind direction (WD), precipitation (P) and hourly PM10, PM2.5 and PM1 were conducted in a suburban locality near the quarry in two monthly highly time-resolved periods (30, 60, 120 min). Three/eight PM size fractions were sampled by a Davis Rotating-drum Uniform-size-cut Monitor (3/8DRUM) and analysed for the presences of asbestos fibres by scanning electron microscopy with energy dispersive x-ray spectroscopy (SEM-EDX).

Trvalý link: http://hdl.handle.net/11104/0288987