Određivanje koncentracija metala u uzorcima sedimenta i tla tehnikom spektrometrije masa uz induktivno spregnutu plazmu i rendgenskom fluorescencijom

master's thesis

• Title (english): Determination of metal concentrations in sediment and soil samples by inductively coupled mass spectrometry and X ray fluorescence
• Author: Sarah Silvija Štimac
• Mentor: Željka Fiket (mentor)
• Committee member: Iva Juranović Cindrić (predsjednik povjerenstva)
• Committee member: Ivica Đilović (član povjerenstva)
• Committee member: Ivana Biljan (član povjerenstva)
• Committee member: Adriana Kenđel (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2021-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

Maseni udjeli metala u sedimentu i tlu određeni su tehnikama spektrometrije masa uz
induktivno spregnutu plazmu (ICP‒MS) i rendgenske fluorescencije (XRF). Istraživanje je
provedeno na certificiranim referentnim materijalima i realnim uzorcima s područja
Novigradskog mora, a analizirani su maseni udjeli 27 elemenata (Ag, Al, As, Ba, Bi, Ca, Cd,
Co, Cr, Cs, Cu, Fe, K, Mg, Mn, Mo, Ni, Pb, Rb, Sb, Sc, Sn, Sr, Ti, U, V i Zn). Priprema
uzoraka za tehniku ICP‒MS temeljila se na razaranju uzorka... More u prisutnosti dušične,
klorovodične, fluorovodične i borne kiseline pomoću sustava za mikrovalnu razgradnju, dok
je priprema uzoraka za analizu tehnikom XRF uključivala prešanje uzoraka u pelete. Kontrola
točnosti analitičkih postupaka provedena je uz pomoć certificiranih referentnih materijala
potočnog, morskog i riječnog sedimenta, a određena je na temelju analitičkog povrata.
Analiza certificiranih referentnih materijala dokazala je da su tehnike usporedive za
određivanje masenih udjela As, Ca, Cu, Fe, K, Mn, Mo, Pb, Rb, Sr, Ti, V i Zn, dok je analiza
realnih uzoraka dokazala da su tehnike usporedive za određivanje masenih udjela As, Fe, Mn,
Pb, Rb, Sr i V. Less

Abstract (english)

Determination of metal concentration in sediment and soil samples was performed by
high‒resolution inductively coupled plasma mass spectrometry (ICP‒MS) and X‒ray
fluorescence (XRF). The study included certified reference materials and samples from the
Novigrad Sea area. In all samples, total concentrations of 27 elements (Ag, Al, As, Ba, Bi, Ca,
Cd, Co, Cr, Cs, Cu, Fe, K, Mg, Mn, Mo, Ni, Pb, Rb, Sb, Sc, Sn, Sr, Ti, U, V and Zn) were
analyzed. Sample preparation for ICP‒MS analysis was... More performed by digestion of samples in
the presence of nitric, hydrochloric, hydrofluoric and boric acids using a microwave digestion
system, while preparation of samples for XRF analysis involved pressing the samples into
pellets. Accuracy of analytical procedures was controled by the certified reference materials
(CRM) of stream, offshore marine and river sediments, and was determined based on
analytical recovery. The analysis of CRM proved that the techniques are comparable for
determining the concentrations of As, Ca, Cu, Fe, K, Mn, Mo, Pb, Rb, Sr, Ti, V and Zn, while
the analysis of real samples proved that the techniques are comparable for determining the
concentrations of As, Fe, Mn, Pb, Rb, Sr and V. Less

• Keywords: ICP‒MS; sediment; tlo; usporedba metoda; XRF
• Keywords (english): ICP‒MS; method comparison; sediment; soil; XRF
• Language: croatian
• URN:NBN: urn:nbn:hr:217:458661
• Project: Number: IP-2019-04-9354; Title: Transport, sudbina i toksičnost metal(oid)a otpuštenih iz ležišta industrijskog otpada; Title: Transport, fate and toxicity of metal(loid)s released from industrial waste deposits; Acronym: FORtIS; Leader: Željka Fiket; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2023-02-25
• Created on: 2021-03-29 12:41:04