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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Ediţia nr.4 din 2018 | |||||||
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AIRBORNE PARTICLES POLLUTION IN DEJ CITY. Autori: IOAN AUREL CHERECHES, IOAN PETEAN, GERTRUD-ALEXANDRA PALTINEAN, AURORA MOCANU, LIANA MURESAN, GEORGE ARGHIR, MARIA TOMOAIA-COTISEL. |
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Rezumat: Environmental data achieved with the Air Quality Monitoring Station in Dej city, Romania, reveal a normal state of particulate matter (PM) emissions below the standard limit in April and May 2017. These airborne particles contain a large amount of mineral fractions such as: quartz, calcite, clays (e.g., kaolinite and muscovite), and lepidocrocite. Their size varies in a wide range: from 1 to 200 μm for floating particles (FP) and from 1 to 10 μm for PM10 observed by optical microscopy and SEM. The in vivo testing shows the ability of PM10 to penetrate into the upper respiratory tract. Mineral fractions were found in nasal exudates. At a shorter exposure time (e.g., 1 minute), only PM10 particles were observed. Particles larger than PM10 were found in nasal exudates at prolonged exposure for up to 3 minutes. Keywords: Floating particles, PM10, hazard |
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