Merjenje emisij korozivnih hlapnih organskih snovi iz tesnilnih mas

Kotnik, Sara (author), Strlič, Matija (mentor)

Emisije hlapnih organskih spojin (HOS) iz različnih materialov imajo lahko negativne učinke na zdravje, poleg tega pa lahko povzročijo hitro razgradnjo predmetov kulturne dediščine. Zato je zmanjšanje HOS v emisijah različnih produktov nujno potrebno. V diplomski nalogi sem kvalitativno in kvantitativno analizirala emisije iz dveh tržno dostopnih polimernih tesnilnih mas. Kvalitativno sem HOS določala z vzorčenjem po principu mikroekstrakcije nadprostora na trdno fazo in dinamično na Tenax cevke za termično desorpcijo ter analizo na GC-MS. Ker sem opravila analize z različnima adsorbentoma, ki imata različno afiniteto do posameznih spojin, sem tako dobila celostno sliko emisij. Kvantitativno sem želela določiti tudi koncentracije ocetne in mravljinčne kisline z uporabo adsorpcijskih cevk z dvema različnima sorbentoma, vendar je potrebno metodo še optimizirati. Na koncu sem opravila še kvantitativno analizo emisij s površine in iz vzorcev v celotnem volumnu z GC-FID z uporabo adsorpcijskih cevk z aktivnim ogljem in določila vsebnost korozivne spojine 2,2,6,6-tetrametil-4-piperidinol v emisijah vzorca Č.

• Language: Slovenian
• Keywords: emisije, hlapne organske spojine, tesnilne mase
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2023
• PID: 20.500.12556/RUL-149512
• COBISS.SI-ID: 162982659
• Publication date in RUL: 07.09.2023

Secondary language

• Language: English
• Title: Emission Measurement of Corrosive Volatile Organic Compounds from Sealants

Abstract

Emissions of volatile organic compounds (VOCs) from various materials can have negative health effects and can also cause faster degradation of cultural heritage objects. Therefore, the reduction of VOCs in the emissions of various products is necessary. In this thesis I qualitatively and quantitatively analyzed the emissions of two commercially available polymer sealants. I qualitatively determined VOCs by sampling according to the principle of HS-SPME and dynamically to Tenax tubes for thermal desorption and an analysis with GC-MS. Since I performed analyzes with different adsorbents, which have different affinity for individual compounds, I got a comprehensive picture of emissions. I also wanted to quantitatively determine the concentrations of acetic and formic acid using adsorption tubes with two different sorbents, but the method still needs to be optimized. At the end I performed a quantitative analysis of emissions from the surface and bulk samples with GC-FID, using adsorption tubes with activated carbon and I determined the content of the corrosive compound 2,2,6,6-tetramethyl-4-piperidinol in emissions of sample Č.

• Keywords: emissions, volatile organic compounds, sealants