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Assessment of Indoor Microplastic Particles Pollution in Selected Sites of Mosul City

Al-Hussayni Rihab Salih, Al-Ahmady Kossay K., Mhemid Rasha Khalid Sabri

Journal of Ecological Engineering

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2023

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Vol. 24, nr 9

322--332

EN

Among the most significant sources of microplastics (MPs) for humans is indoor dust. However, very few researchers have studied the properties and abundance of MPs that existed in dust from different indoor environments. The current study investigated microplastic fallout in 90 locations (5 kindergartens, 6 mosques, 5 schools, 10 shops, 5 cafeterias, 6 hospitals, 25 dormitories, 7 barber salons, 6 offices, 5 scientific laboratories, 5 pharmacies, and 5 medical clinics) during six months. Among the ninety sampling sites, the most significant average of MPs was actually found in the kindergartens (4.743×103 ± 427 MP/m2 /d), in contrast, the lowest abundance was in the medical clinics (3.02×102 ± 62 MP/m2 /d). The majority of indoor dust samples contained MPs in the form of fibers. The dominant colour of dust samples was transparent, followed by black, red, blue, green, and yellow. A total of six types of polymers were identified, including polystyrene (PS, 39%), polyethylene terephthalate (PET, 20%), polypropylene (PP, 17%), polyethylene (PE, 13), polyamide (PA, 7%) and polyvinyl chloride (PVC, 3%). PS, PET, and PP represent most of the MPs polymer types discovered in indoor dust samples from various locations. These polymers are frequently used in fabrics, furniture, carpets, packaging, and synthetic fibers. Statistical analysis was performed on the results using Excel 2019. The results showed that there were statistically significant differences in each site with the other sites, except between (schools and mosques), (pharmacies, and medical clinics). The similarity between these sites in terms of people’s activity or in terms of furniture, the lack of carpets and curtains could explain the insignificant difference.

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Magnetic signature of indoor air pollution: household dust study

Górka-Kostrubiec B., Jeleńska M., Król E.

Acta Geophysica

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2014

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Vol. 62, no. 6

1478--1503

EN

The combination of magnetic and geochemical methods was used to determine the mineralogy, grain size and domain structure of magnetic particles in indoor dust collected in 195 sites in Warsaw, Poland. Data show an asymmetric distribution of magnetic susceptibility (χ) in the wide range of 20-1514 × 10-8 m³ kg–1. Comparison of magnetic parameters shows that the internal dust contains outside pollution characteristic for air and soil. More than 90% of indoor dust samples were characterized by roughly uniform magnetic mineralogy, typical for fine grained magnetite (diameter of 0.2-5 μm), and grain size between pseudo-singledomain and small multi-domain with small contribution of superparamagnetic particles (~10%). Samples with χ larger than 220 × 10–8 m³ kg–1 contain mainly magnetite and an anthropogenic metallic Fe with TC > 700°C. The indoor dust contains, characteristic for the urban areas, spherical magnetic particles originated from fossil fuel combustion processes and mixture of irregular angular iron-oxides grains containing other elements, including Na, Ca, Al, Si, K, S, Mn, Cl, and Mg.

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Średnio- i trudnolotne związki organiczne w powietrzu wewnętrznym analityka i monitoring

Partyka M., Zabiegała B., Namieśnik J.

Chemia i Inżynieria Ekologiczna

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2006

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Vol. 13, nr S1

100-114

PL

Związki organiczne występujące w powietrzu wewnętrz;nym na różnych poziomach stę-żeń mogą stanowić poważną przyczynę problemów zdrowotnych mieszkańców i użytkowników pomieszczeń. Bardzo ważne staje się więc zagadnienie monitoringu obecności związków organicznych, należących do grupy trwałych zanieczyszczeń organicznych (POP).

EN

Organic compounds, present in indoor air, can impair the air, and can be the reason for human health worsening. By reason of this very important is persistent organic pollutants (POP) monitoring.