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Composition of organic compounds adsorbed on PM10 in the air above Maribor
Alen Miuc, Ernest Vončina, Uroš Lešnik, 2015, izvirni znanstveni članek

Opis: Organic compounds in atmospheric particulate matter above Maribor were analysed in 120 samples of PM10 sampled according to the EN 12341:2014 reference method. Organic compounds compositions were investigated together with the primary and secondary sources of air pollution. Silylation as derivatisation method was used for the GC-MS determination of volatile and semi-volatile polar organic compounds. Distribution of fatty acids, n-alkanes and iso-alkanes, phthalate esters, siloxanes, different sterols, various sugars and sugar alcohols, compounds of lignin and resin acids, dicarboxylic acids from photochemical reactions, PAHs, organic nitrogen compounds and products from secondary oxi- dation of monoterpenes were determined. The use of silicone grease for the purpose of lubricating the impact surface of the air sampler caused higher values of gravimetric determination. Solid particles may have been bounced from the surface of a greasy impact plate and re-entrained within the air stream and then collected on a sample filter. The carryover of siloxanes was at least from 5% up to 15% of the accumulated particles weight, depending on ambient temperature. This was the reason that the gravimetric results for determination of PM10 according to the standard EN 12341:2014 were overestimated.
Ključne besede: secondary organic aerosol, volatile organic compounds, PM10, EN 1234:2014
Objavljeno: 17.08.2017; Ogledov: 477; Prenosov: 147
.pdf Celotno besedilo (676,87 KB)
Gradivo ima več datotek! Več...

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Industrijski roboti v POS : diplomska naloga univerzitetnega študijskega programa
Borut Lešnik, 2002, diplomsko delo

Ključne besede: robotika, industrijski roboti, roboti, programiranje
Objavljeno: 26.07.2007; Ogledov: 2006; Prenosov: 0

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Vplivi kvantizacije pri izvedbi digitalnih sit s porazdeljeno aritmetiko
1990, diplomsko delo

Objavljeno: 26.07.2007; Ogledov: 1224; Prenosov: 0

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Ocena ekonomičnosti gradbenih proizvodov s pomočjo vrednostne analize
1989, diplomsko delo

Objavljeno: 26.07.2007; Ogledov: 1671; Prenosov: 0

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Restavriranje flamske tapiserije
1989, diplomsko delo

Ključne besede: tapiserija, regeneriranje, konserviranje, restavriranje, vzdrževanje
Objavljeno: 26.07.2007; Ogledov: 1522; Prenosov: 0

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Iskanje izvedeno v 0.28 sek.
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Logotipi partnerjev Univerza v Mariboru Univerza v Ljubljani Univerza na Primorskem Univerza v Novi Gorici