prikaz prve stranice dokumenta Opterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu
  Download
PDF 6.83 MB
master's thesis
Opterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu
Zagreb: University of Zagreb, Faculty of Science, 2023. urn:nbn:hr:217:980382
Lakuš, Ivan
University of Zagreb
Faculty of Science
Department of Biology
University of Zagreb
Faculty of Science
Department of Geology

Institutional repository: Repository of the Faculty of Science

Cite this document

Lakuš, I. (2023). Opterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu (Master's thesis). Zagreb: University of Zagreb, Faculty of Science; Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:980382

Lakuš, Ivan. "Opterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu." Master's thesis, University of Zagreb, Faculty of Science; University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:980382

Lakuš, Ivan. "Opterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu." Master's thesis, University of Zagreb, Faculty of Science; University of Zagreb, Faculty of Science, 2023. https://urn.nsk.hr/urn:nbn:hr:217:980382

Lakuš, I. (2023). 'Opterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu', Master's thesis, University of Zagreb, Faculty of Science; University of Zagreb, Faculty of Science, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:980382

Lakuš I. Opterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; Zagreb: University of Zagreb, Faculty of Science; 2023 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:217:980382

I. Lakuš, "Opterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu", Master's thesis, University of Zagreb, Faculty of Science, Zagreb; University of Zagreb, Faculty of Science, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:217:980382

Metadata
TitleOpterećenje plastike i sedimenta bakterijama i metalima u tragovima na otoku Lastovu
Title (english)Bacterial and trace metal load of plastic debris and sediment on the Lastovo Island
AuthorIvan Lakuš
MentorKristina Pikelj (mentor)
MentorVlado Cuculić (komentor)
Committee memberKristina Pikelj (predsjednik povjerenstva)
Committee memberHana Fajković (član povjerenstva)
Committee memberZrinka Ljubešić (član povjerenstva)
Committee memberIvan Čanjevac (član povjerenstva)
Committee memberMladen Maradin (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
GranterUniversity of Zagreb
Faculty of Science
(Department of Geology)
Zagreb
Defense date and country2023-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Plastični otpad i sediment mediji su za transport metala u tragovima te patogenih bakterija u morskom okolišu, što ih čini prijetnjom za organizme i morske ekosustave, a na koncu i za čovjeka. Cilj rada bio je odrediti opterećenje plastike i sedimenta metalima u tragovima te bakterijama prije i poslije turističke sezone na Lastovu. Prvo su određene litološke značajke sedimenata, a potom su FTIR-ATR metodom identificirani tipovi uzorkovanih polimera. Sediment u uvali Uska šljunkoviti je pijesak s visokim udjelom karbonata (80% CaCO3), dok je sediment u uvali Zace pijesak u kojem je najzastupljeniji kvarc (42% CaCO3). Najzastupljeniji tip polimera u obje uvale je polipropilen (39%), a slijede ga polistiren (17%), polietilen niske gustoće (17%), polietilen nepoznate gustoće (16%), te polietilen visoke gustoće (11%). Voltammetrijom su određeni maseni udjeli metala u tragovima na plastici, odnosno u sedimentu. U sedimentu su zabilježene veće vrijednosti ukupnih metala, ali unutar dopuštenih granica. Maseni udjeli metala na plastici u rangu su neonečišćenih sedimenata. Primijećen je sljedeći trend masenih udjela metala na plastici i u sedimentu: Zn > Pb > Cu > Cd. Afinitet vezanja metala s obzirom na tip polimera je: LDPE > PS > PP > HDPE. Mikrobiološkom analizom je ustanovljeno veće opterećenje heterotrofnim bakterijama na plastici i u sedimentu u post-sezoni. To bi mogao biti rezultat turističke sezone. Sediment je pokazao veće opterećenje od plastike. U post-sezoni su u sedimentu zabilježene i veće vrijednosti indikatora fekalnog onečišćenja, no unutar dopuštenih granica. U sedimentu su identificirane vrste Vibrio alginolyticus i V. harveyi koje mogu biti patogene za morske organizme i čovjeka. Polistiren se u ovom radu smatra bakterijama najopterećenijim polimerom budući da su jedino na njemu uvijek narasle kolonije pojedinih HPC bakterija.
Abstract (english)
Marine plastic litter and sediment are transport media for trace metals and pathogenic bacteria, which makes them a threat to living organisms and marine ecosystems, and ultimately to humans. This work aimed to determine the load of MPL and sediment with TM and bacteria before and after the tourist season on the island of Lastovo. Firstly, the lithological features of the sediments were determined, followed by the identification of types of polymers using the FTIRATR. The sediment in the Uska cove is gravelly sand with a high carbonate content (80% CaCO3), while the sediment in the Zace cove is sand with quartz being most abundant mineral (42% CaCO3). The most common type of polymer in both bays was polypropylene (39%), followed by polystyrene (17%), low density polyethylene (17%), unspecified polyethylene (16%), and high density polyethylene (11%). Mass fractions of TM on MPL and sediment were determined by voltammetry. The sediment showed higher values of total TM, but within the allowed limits. Mass fractions of TM on MPL are in the range of unpolluted sediments. The following trend of mass fractions of TM on MPL and in sediment was observed: Zn > Pb > Cu > Cd. Metal binding affinity with regard to the polymer type was: LDPE > PS > PP > HDPE. Microbiological analysis revealed a higher load of heterotrophic bacteria on MPL and in sediment in the post-season. This could be the result of an exceptional tourist season. Sediment showed a higher bacterial load than MPL. In the post-season, higher values of fecal pollution indicators were recorded in the sediment, but within the permissible limits. The species Vibrio alginolyticus and V. harveyi, which can be pathogenic for marine organisms and humans, were identified in the sediment. In this study, polystyrene is considered to be the polymer most loaded with bacteria.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:980382
ProjectNumber: IP-2019-04-5832
Title: Međudjelovanje morskog (mikro)plastičnog otpada i metala zagađivala: mogući put od morskog okoliša do čovjeka
Title: Marine (micro)plastic litter and pollutant metals interaction: a possible pathway from marine environment to human
Acronym: METALPATH
Leader: Vlado Cuculić
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: Enviromental Sciences
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra struke znanosti o okolišu (magistar/magistra struke znanosti o okolišu)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2024-09-22
Terms of useLicence In copyright icon
Created on2023-10-18 11:21:46