prikaz prve stranice dokumenta Metoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza
Embargo period 2025-09-28
master's thesis
Metoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza
Zagreb: University of Zagreb, Faculty of Science, 2023. urn:nbn:hr:217:671476
Krajina, Natko
University of Zagreb
Faculty of Science
Department of Chemistry

Institutional repository: Repository of the Faculty of Science

Cite this document

Krajina, N. (2023). Metoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:671476

Krajina, Natko. "Metoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza." Master's thesis, University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:671476

Krajina, Natko. "Metoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza." Master's thesis, University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:671476

Krajina, N. (2023). 'Metoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza', Master's thesis, University of Zagreb, Faculty of Science, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:671476

Krajina N. Metoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2023 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:217:671476

N. Krajina, "Metoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:217:671476

Metadata
TitleMetoda spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem u analizi nanočestica željeza
Title (english)Laser ablation-inductively coupled plasma-mass spectrometry method in iron nanoparticles analysis
AuthorNatko Krajina
MentorSanda Rončević (mentor)
MentorIvan Nemet (komentor)
Committee memberSanda Rončević (predsjednik povjerenstva)
Committee memberTomica Hrenar (član povjerenstva)
Committee memberIvan Kodrin (član povjerenstva)
Committee memberIvan Nemet (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Chemistry)
Zagreb
Defense date and country2023-09-28, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
U ovom radu sintetizirane su nanočestice neutralnog željeza (nZVI) za analizu sorpcije iona neodimija, europija, gadolinija, erbija i uranija iz vodene otopine na njihovu površinu. Sadržaj iona zaostao u vodenoj otopini određen je metodom spektrometrije masa uz induktivno spregnutu plazmu (ICP-MS), a sadržaj vezan na nanočestice željeza metodom spektrometrije masa uz induktivno spregnutu plazmu s laserskim otparavanjem (LA-ICP-MS). Ispitana je mogućnost uporabe polimliječne kiseline kao nosača čvrste faze za analizu metodom LA-ICP-MS. Zamijećena je loša reproducibilnost mjerenja te velika standardna odstupanja mjerenih signala. Za potrebe analize učinkovitosti sorpcije odabranih iona na nanočestice željeza metodom LA-ICP-MS načinjene su pastile uzoraka s mikrokristalnom celulozom. Pripravljena su tri kalibracijska standarda s mikrokristalnom celulozom i kalibracija je provedena uz željezo kao unutarnji standard. Pri analizi opažen je izvrstan linearni odziv te relativno nisko standardno odstupanje pri određivanju odabranih elemenata u tragovima. Analizom vodenih otopina lantanoida metodom ICP-MS nakon sorpcije, utvrđeno je da nZVI uklanjaju ione odabranih elemenata s vrlo visokom učinkovitošću.
Abstract (english)
In this experiment nanoparticles of zero-valent iron (nZVI) were synthesized and a sorption of neodymium, europium, gadolinium, erbium and uranium ions from aqueous solution onto their surface was analyzed. Amount of ions that had remained in aqueous solution after the sorption was determined by inductively coupled plasma-mass spectrometry (ICP-MS), and amount of ions adsorbed onto the surface of nZVI by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Applicability of polylactic acid as a solid carrier for LA-ICP-MS analysis was investigated, but poor measurement reproducibility and large standard deviation in measured signals were observed. Sample preparation for LA-ICP-MS analysis of bare nZVI included drying and homogenization by pressing nZVI with microcrystalline cellulose into pellets. Three calibration standards were prepared, and calibration was accomplished with iron as an internal standard. Highly linear response, and reasonably low standard deviations were observed during the analysis of the elements in ppm range. ICP-MS analysis of aqueous solutions after the sorption experiment showed very high sorption efficiency for all elements.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:671476
Study programmeTitle: Graduate university studies in chemistry; specializations in: Research programme
Course: Research programme
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsEmbargoed access
Embargo expiration date: 2025-09-28
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Created on2023-10-18 11:49:20