XRF in ICP-QQQ
Nika Močnik (Author), Lidija Slemenik Perše (Mentor)

Abstract

V zraku je vse več trdnih delcev, ki lahko negativno vplivajo na zdravje ljudi. Delci so lahko različnega vira, najpogosteje izhajajo iz izpuhov prevoznih sredstev ter z izgorevanjem lesa kot virom ogrevanja. Vsi ti delci, ki se nahajajo v ozračju imajo tudi značilno elementno sestavo, ki pa je odvisna od izvora. Namen diplomske naloge je bil ugotoviti multi elementno sestavo delcev zajetih na eni lokaciji. V predstavljeni nalogi sem analizirala sestavo delcev v zraku in s pomočjo meritev v različnih obdobjih leta ugotavljala, kako je koncentracija delcev odvisna od letnega časa. Za ta namen sem uporabila vzorčevalnik, ki je prečrpaval zrak na vnešene filtre. Med črpanjem so se na filter naložili delci iz zraka, ki jih je vzorčevalnik zajel. Multielementna sestava delcev s filtov je bila analizirana z uporabo masnega spektrometra z induktivno sklopljeno plazmo (ICP-QQQ). Vsi filtri pa so bili analizirani tudi s pomočjo merjenja rentgenske fluorescence (XRF), kar je omogočilo primerjavo rezultatov obeh analiz. Vir onesnaženja sem določila na podlagi ocene okolice, v kateri se je nahajal vzorčevalnik.

Keywords

delci v zraku;multielementna sestava;analizne metode;masni spektrometer;induktivno sklopljena plazma s trojnim kvadrupolom;ICP-QQQ;rentgenska fluorescenčna spektrometrija;XRF;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [N. Močnik]
UDC: 543.42(043.2)
COBISS: 67499779 Link will open in a new window
Views: 263
Downloads: 60
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Other data

Secondary language: English
Secondary title: Comparison of two methods for determining multi-elemental composition of particulate matter in air: XRF and ICP-QQQ
Secondary abstract: There a high number of solid particles in the air that can negatively affect human health. Particles can come from a variety of sources, most commonly from vehicle exhausts and by burning wood as a heating source. All these particles, which are located in the atmosphere, have a characteristic elemental composition, which, however, depends on the origin. Therefore, the aim of the diploma thesis was to determine the multi-element composition of the particles captured at one location. The measurements were performed at different times of the year. Therefore we were able to determine the concentration of particles depended on the time of year. We used a sampler which pumped air onto the inserted filters. During pumping, air particles were deposited on the filter and captured by the sampler. Multielemental analyses were done by using an inductively coupled plasma mass spectrometer (ICP-QQQ). All of the filters were also analyzed by measuring X-ray fluorescence (XRF), which allowed the results of both analyzes to be compared. I determined the source of contamination based on the environmental assessment in which the sampler was located.
Secondary keywords: airborne particles;multielement composition;XRF;ICP-QQQ;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000372
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo
Pages: 33 str.
ID: 12982311