diplomsko delo
Špela Hren (Author), Gabriela Kalčíková (Mentor)

Abstract

Zaradi vedno pogostejše proizvodnje in uporabe plastike, jo vedno več najdemo tudi v okolju. Eden izmed večjih problemov je mikroplastika. To so plastični delci, ki so manjši od 1 mm. V okolje pridejo po različnih poteh, največkat pa je to zaradi nepravilnega ravnanja z odpadki ali pa izpuščanja odpadnih vod v morja in površinske vode. Problem pa niso samo delci in njihov mehanski vpliv, ampak tudi snovi, ki se iz mikroplastike izlužujejo. Te snovi so lahko sestavni del plastike, lahko pa so snovi/onesnaževala, ki so se adsorbirala na mikroplastiko po vstopu v okolje. Namen raziskave je bilo ugotoviti ali se iz različnih tipov mikroplastike izlužujejo snovi, ki vplivajo na hitrost rasti male vodne leče, dolžino korenin in vsebnost klorofila v listih. Imeli smo pet različnih tipov mikroplastike (mikroplastika ekstrahirana iz kozmetike, sintetična vlakna, plastična vrečka, zmlet bakelit in delce plastenke) ter naravne delce – bukov prah. Rezultati so pokazali, da izlužki iz različnih vrst mikroplastik nimajo vpliva na hitrost rasti in vsebnost klorofilov male vodne leče, le izlužki iz bakelita so povzročili zmanjšanje dolžine korenin.

Keywords

mikroplastika;izluževanje;izlužki;izluževalni test;mala vodna leča;Lemna minor;test strupenosti;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [Š. Hren]
UDC: 504.5(043.2)
COBISS: 31571971 Link will open in a new window
Views: 418
Downloads: 113
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: The effect of microplastics leachates on growth of duckweed
Secondary abstract: Due to increasing production and usage of plastic, the amount of plastic in the environment grows every year. One of the biggest problems connected to plastic waste is generation of microplastics. This are plastic particles, smaller than 1 mm. They can enter the environment through a variety of pathways, however the most common are inappropriate waste treatment or discharging wastewaters into oceans and freshwaters. The problem is not just microplastic particles and their mechanical effect, but also substances that can be leached out from microplastics. These are different chemicals, that are part of plastic structure or substances that have been adsorbed on them. The aim of this study was to evaluate the effect of microplastics leachates on growth of duckweed Lemna minor, length of their roots and content of chlorophyll. Five different microplastics (microplastics from personal care product, synthetic fibre, plastic bag, ground bakelite and plastic bottle) as well as natural particles (beech saw dust) were tested. None of the microplastics leachates had impact on specific growth rate and chlorophyll content, however leachates from bakelite had impact on the length of the roots.
Secondary keywords: duckweed;leachates;leaching;microplastics;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000372
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo
Pages: 18 str.
ID: 12031361