Razvoj analitičkih metoda određivanja mikroplastike u okolišu

master's thesis

• Title (english): Development of analytical methods for determination of microplastics in the environment
• Author: Helena Prskalo
• Mentor: Tomislav Bolanča (mentor)
• Committee member: Tomislav Bolanča (predsjednik povjerenstva)
• Committee member: Matija Cvetnić (član povjerenstva)
• Committee member: Lidija Furač (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2021-02-24, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

Mikroplastika, kao tvar koja onečišćuje okoliš, postala je predmetom brojnih istraživanja. Njezina identifikacija postiže se povezivanjem različitih analitičkih metoda. Polietilen niske gustoće (LDPE), kao jedan od najčešćih polimera od kojih nastaje mikroplastika, podvrgava se pirolizi na različitim temperaturama, u različitom vremenu i s različitim početnim masama uzorka, rezultirat će nastajanjem plina, ulja i čađe. Temperatura je glavni parameter koji utječe na proces pirolize. Plinskom kromatografijom povezanom s masenom spektroskopijom (GC/MS) analizira se sastav nastalog plina. Plinovi koji nastaju su alkani i alkeni (propan, 1-buten, 2-buten, ciklobutan). FTIR spektroskopijom omogućena je analiza nastalog ulja i krutog ostatka kojom je potvrđeno da se radi o ugljikovodicima.

Abstract (english)

Microplastics, as a substance that pollutes the environment, has become the subject of numerous researches. Its identification is accomplished by linking different analytic methods. Low density polyethylene (LDPE), as one of the most common polymers from which microplastics are formed, is submited to pyrolysis at different temperatures, in different time and with different masses of the sample, will result in the formation of gas, oil and char. Temperature is the main parameter that affect the pyrolysis process. Gas chromatography associated with mass spectroscopy (GC/MS) analyzes the composition of the resulting gas. Gases produced are alkanes and alkenes (propane, 1-buten, 2-buten, cyclobutan). With FTIR spectroscopy, an analysis of the resulting oil and solid residue was made possible confirming that it is hydrocarbons.

• Keywords: mikroplastika; okoliš; LDPE; piroliza; GC/MS metoda; FTIR
• Keywords (english): microplastics; environment; LDPE; pyrolysis; GC/MS method; FTIR
• Language: croatian
• URN:NBN: urn:nbn:hr:149:862301
• Study programme: Title: Applied Chemistry - Graduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry; Course: Advanced materials and technologies; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra primijenjene kemije (magistar/magistra primijenjene kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-04-05 12:16:08