diplomsko delo univerzitetnega študijskega programa
Vanja Gaber Krepša (Author), Darinka Brodnjak-Vončina (Mentor), Majda Rola (Co-mentor), Mitja Kolar (Co-mentor)

Abstract

Cilj diplomske naloge je določiti vsebnost težkih kovin v izlužkih in ovrednotiti natančnost rezultatov, dobljene rezultate pa vključiti v obstoječo validacijo metode in tako metodo, ki je v Talum Inštitut d.o.o, že vpeljana za odpadne vode, še razširiti na izlužke. Vsebnost kovin smo analizirali v vzorcih iz Taluma d.d in Impola d.d. Analizirali smo žlindro in filtrni prah iz livarne Talum d.o.o., ter filtrni prah iz livarne Impol. Laboratorijska vzorca filtrnega prahu iz Taluma d.o.o. in Impola d.o.o. smo pripravili po celotnem postopku, torej pripravili zatehto suhe snovi, izvedli izluževanje, filtriranje, razklop in na koncu izvedli meritev z indultivno sklopljeno plazmo in masno spektrometrijo (ICP – MS). Vzorec žlindre iz livarne Talum d.o.o. pa je v obliki izlužka, tako da smo naredili še razklop s HNO3 ali z zlatotopko in nato izvedli meritve. Preverjali smo ponovljivost luženja, ponovljivost razklopa in ponovljivost meritve z ICP – MS. Preverili smo tudi, če meritve opravljene po razklopu pri izlužku za posamezne elemente odstopajo od meritev, kjer razklopa nismo izvedli. Ugotovili smo, da obstaja signifikantna razlika med rezultati dobljenih meritev za vzorec žlindre z razklopom ali brez razklopa. Potrdili smo, da je metoda določanja težkih kovin v izlužkih filtrnega prahu in žlindre z induktivno sklopljeno plazmo in masno spektrometrijo natančna, točna in primerna za ovrednotenje vsebnosti izbranih kovin v navedenih vzorcih in s tem za ustrezno karakterizacijo odpadkov.

Keywords

izlužki;kovine;sklopljena plazma ICP-MS;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher: [V. Gaber Krepša]
UDC: 543.51:549.25(043.2)
COBISS: 18013206 Link will open in a new window
Views: 2069
Downloads: 256
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Other data

Secondary language: English
Secondary title: DETERMINATION OF HEAVY METALS IN LEACHINGS WITH INDUCTIVELY COUPLED PLASMA AND MASS SPECTROSCOPY
Secondary abstract: The goals of the thesis are to: determine the content of heavy metals in the leachates, evaluate the precision of the results, and include the results in the existing validation method. With the research, the waste water method, which is already introduced in Talum Institute waste water, can also be extended in leachates. We analyzed metal content in the samples from Talum d.d. and Impol d.d. We analyzed slag and filter dust from the Talum foundry and filter dust from the Impol foundry. Laboratory samples of filter dust from the Talum and Impol plants were prepared for analysis. We carried out the processes of leaching, filtration and separation. In the end, we measured all the material using the method of inductive coupled plasma and mass spectrometry (ICP - MS). The sample of slag from the Talum foundry was in the form of leachates, so we first did the separation with HNO3 or with HCL and then performed the measurements. We checked the repeatability of the leaching, separation and the ICP – MS measurements. We checked if the measurements made after the separation of leachates for individual elements deviate from the measurements where the separation was not performed. We found that there were significant differences between the results taken from the samples of slag. The results were different with separation and without separation. We confirmed that the inductive coupled plasma and mass spectrometry (ICP - MS) method is precise and suitable for determining the levels of heavy metals in leachates, filter dust and slag. We, thus, concluded that this method is suitable for evaluating the content of waste-metal material.
Secondary keywords: leachings;metals;inductively coupled plasma ICP;
URN: URN:SI:UM:
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages: X, 57 str.
ID: 8729266