Ionska kromatografija kot metoda za določanje anionov v lebdečih (PM) delcih

Skube, Urša (author), Kolar, Mitja (mentor)

V sklopu diplomskega dela sem optimizirala in delno validirala analizno metodo za določanje 7 anionov v lebdečih delcih z uporabo ionske kromatografije s konduktometrično detekcijo za potrebe projekta Vpliv onesnaženja s trdnimi delci (PM) na kulturno dediščino. Optimizacijo sem izvedla s pomočjo pripravljenih standardnih raztopin in realnega vzorca. Metodo sem validirala preko določitve delovnega območja, linearnosti in meje določljivosti (LOD) za 7 anionov – fluorid, klorid, nitrit, nitrat, sulfat, oksalat in fosfat. Predhodno sem naredila ekstrakcijsko metodo za analizo realnih vzorcev lebdečih delcev iz zraka zajetih na kvarčnih filtrih, ki se je na koncu izkazala za zelo preprosto, hitro in učinkovito. Izvedla sem tudi analizo realnih vzorcev PM2,5. Z metodo sem uspešno kvalitativno in kvantitativno določila kloridne, nitratne, sulfatne in oksalatne ione. Fluoridnih, nitritnih in fosfatnih ionov v vzorcih nisem detektirala zaradi njihove koncentracije pod mejo določljivosti oz. njihove odsotnosti v analiziranih vzorcih.

• Language: Slovenian
• Keywords: ionska kromatografija, lebdeči delci, PM, anioni, optimizacija in validacija metode
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2021
• PID: 20.500.12556/RUL-130146
• COBISS.SI-ID: 82888707
• Publication date in RUL: 10.09.2021

Secondary language

• Language: English
• Title: Ion chromatography as a method for the determination of anions in atmospheric particulate matter

Abstract

As part of the diploma thesis optimization and validation of an analytical method for the determination of 7 anions in ambient particulate matter using ion chromatography with conductometric detection was carried out for the project Impacts of PM Pollution on Cultural Heritage. Optimization was performed with prepared standard solutions and a real sample. It was partially validated through the determination of a working range, linearity and limit of detection (LOD) of 7 anions – fluoride, chloride, nitrite, nitrate, sulfate, oxalate and phosphate. The extraction method for real samples of PM captured on a quartz filter was also developed. Ultimately it was proved as very simple, fast and efficient. Analysis of real PM2.5 samples was also performed. The method allowed to successfully qualitatively determine and quantify chloride, nitrate, sulphate and oxalate ions. Fluoride, nitrite and phosphate ions were not detected due to concentrations below the LOD or their absence in the samples.

• Keywords: ion chromatography, particulate matter, PM, anions, method optimization and validation