Utjecaj rudarskog otpada na okoliš i zdravlje ljudi, Otavi Mountainland, Namibija

master's thesis

• Title: Utjecaj rudarskog otpada na okoliš i zdravlje ljudi, Otavi Mountainland, Namibija : diplomski rad
• Title (english): Impact of mine waste on environment and human health, Otavi Mountainland, Namibia : master’s thesis
• Author: Ines Tomašek
• Mentor: Marta Mileusnić (mentor)
• Committee member: Marta Mileusnić
• Committee member: Goran Durn
• Committee member: Uroš Barudžija
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mineralogy, Petrology and Mineral Resources); Zagreb
• Defense date and country: 2013-09-19, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Geological Engineering

Abstract

Predmet istraživanja ovog diplomskog rada su jalovina i tlo onečišćeno rudarskim aktivnostima na području rudnika Berg Aukas i Tsumeb u Namibiji. Cilj istraživanja bio je utvrditi stupanj zagađenja, rizik za okoliš te biopristupačnost potencijalno toksičnih metala sa svrhom procjene utjecaja rudarskih aktivnosti na zdravlje djece. Uzorkovanje tala i jalovine obavili su prof.dr.sc. Marta Mileusnić i prof.dr.sc. Benjamin Mapani na lokacijama najučestalije aktivnosti djece u istraživanom području, tijekom srpnja 2012. godine. Laboratorijske analize uzoraka uključivale su ekstrakciju zlatotopkom, sekvencijsku ekstrakcijsku analizu te ekstrakciju u tjelesnim tekućinama (želučanom i crijevnom). Analiza potencijalno toksičnih metala u navedenim ekstraktima obavljena je primjenom atomske apsorpcijske spektrometrije, od kojih su najznačajniji izmjereni metali As, Cd, Cu, Hg, Pb i Zn. Rezultati istraživanja statistički su obrađeni te su izračunati indikatori stupnja zagađenja tla, stupanj rizika za okoliš te dnevni unos onečišćivala za djecu. Budući da su rezultati pokazali visok stupanj zagađenja i rizik za okoliš za istraživane metale u svim analiziranim uzorcima, tla u oba istraživana područja nisu prihvatljiva za korištenje u poljoprivredne i rezidencijalne svrhe. S obzirom na procijenjeni dnevni unos onečišćivala, djeca koja žive na području Berg Aukasa ugrožena su olovom, kadmijem i cinkom, a djeca na području Tsumeba potencijalno su ugrožena radi količina unesenog arsena i olova.

Abstract (english)

Abstract: The subject of this thesis are tailings and soils contaminated by mining activities in the area of the mines Berg Aukas and Tsumeb in Namibia. The aim of this study was to determine the degree of pollution, environmental risk and bioaccessibility of potentially toxic metals in order to estimate the impact of mining activities on the health of children. Soil and tailings sampling was performed in July 2012 by prof. Marta Mileusnić and prof. Benjamin Mapani, at locations where children spend most of their time. Laboratory analysis of samples included aqua regia extraction, sequential extraction and body fluids (gastric and intestinal) extraction. Potentially toxic metals (As, Cd, Cu, Hg, Pb and Zn) in extracts were analyzed using atomic absorption spectrometry. Indicators of soil contamination, environmental risk and daily intake of contaminants for children were calculated. Considering high level of pollution and environmental risk for the studied metals in all samples, soils from both study areas are not acceptable for agricultural and residential use. Given the estimated daily intake of contaminants, children living in the Berg Aukas are threatened by lead, cadmium and zinc, whereas children in Nomtsob township of Tsumeb are potentially threatened by intake of arsenic and lead.

• Keywords: onečišćenje/zagađenje; rudarska aktivnost; biopristupačnost; Otavi Mountainland; Namibija
• Keywords (english): contamination/pollution; mine activity; bioavailability; Otavi Mountainland; Namibia
• Language: croatian
• URN:NBN: urn:nbn:hr:169:131980
• Study programme: Title: Geological Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka geološkog inženjerstva (magistar/magistra inženjer/inženjerka geološkog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2016-01-20 08:34:23