diplomsko delo
Maja Kozole (Author), Gabriela Kalčíková (Mentor)

Abstract

Mikroplastika je delec, ki je majnši od 5 mm in se sprošča v okolje zgolj kot posledica človeškega delovanja. Eden izmed načinov, da pot mikroplastike v okolje preprečimo, je uporaba čistilnih naprav. Čistilne naprave imajo zelo visoko učinkovitost odstranjevanja mikroplastike, vendar pa se še veliko delcev sprosti v okolje. Največ mikroplastike pride v odpadno vodo iz izdelkov za osebno nego (mikrozrnca v pilingu, zobna pasta) in s pranjem sintetičnih oblačil. Ko je mikroplastika v vodnih ekosistemih, jo lahko zaužijejo različni organizmi in posledično na njih mikroplastika negativno vpliva. Mikroplastika se lahko tudi adsorbira na organizme, to je predvsem težava pri mikroplastiki z nizko gostoto, ki plava na vodi in lahko vpliva na plavajoče rastline. Ena izmed njih je tudi mala vodna leča (Lemna minor). Pri eksperimentalnem delu smo preverjali, kako prisotnost mikroplastike vpliva na rast listov in korenin male vodne leče. Uporabili smo vzorce iz treh različnih plastičnih izdelkov (koščki vrečke, mikroplastika iz kozmetike, zmlet bakelit) in jih skupaj s kontolnimi vzorci za sedem dni postavili v inkubator. S štetjem korenin in listov ter merjenjem dolžine korenin smo prišli do zaključka, da mikroplastika negativno vpliva na rast listov in korenin rastline.

Keywords

mikroplastika;negativni vpliv;vpliv na organizme;vpliv na zdravje ljudi;mala vodna leča;Lemna minor;čistilne naprave;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [M. Kozole]
UDC: 504.5:678(043.2)
COBISS: 1538478787 Link will open in a new window
Views: 853
Downloads: 280
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Other data

Secondary language: English
Secondary title: The impact of microplastics on leaves and roots growth of common duckweed
Secondary abstract: Microplastics are any type of plastic particle that is less than 5 millimeters in length and it is released into the environment only as a result of the human behaviour. One of the ways to prevent the microplastics entering freshwaters is the use of wastewater treatment plants. They are highly efficient, but a lot of particles are still released into the environment. Most of the microplastics released into wastewaters are from personal care products (microbeads in peeling, toothpaste) and washing of synthetic clothes. When microplastics enter aquatic ecosystems, it can be ingested by various organisms and have negative impact on them. Microplastics can be also adsorbed on organisms, which is the major issue for low-density microplastics floating on the water surface and affecting floating plants. One of them is also common duckweed (Lemna minor). In the experimental work, we examined how the presence of microplastics affects the growth of the leaves and roots of the common duckweed. We prepared samples from three different types of plastisc (plastic bag, microplastics from cosmetics, shredded bakelite) and placed them together with the control samples in the incubator for seven days. The counting of roots and leaves and the measuring of the roots has led to the conclusion that microplastics negatively affects growth of roots and leaves.
Secondary keywords: common duckweed;negative impacts;microplastics;sewage treatment;
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: 24 str.
ID: 11363444