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Mikroplastika v vsakdanjem življenju [Elektronski vir] = Microplastics in everyday lifeKokalj, VivaV raziskovalni nalogi smo proučevali vsebnost mikroplastike v šamponih za lase. Mikroplastika ima negativen vpliv na naravo in zdravje ljudi, v zadnjih letih pa se v povečanem obsegu uporablja v ... izdelkih za vsakdanjo uporabo, med drugim tudi v kozmetiki. Raziskovalne metode, ki smo jih v okviru raziskovalne naloge uporabili, so filtriranje pod znižanim tlakom in skozi filtrne diske s pomočjo injekcijske brizgalke. Za ugotavljanje spremembe mase smo uporabili tehtanje z analitsko tehtnico, velikosti delcev v različnih raztopinah smo izmerili s pomočjo dinamičnega sipanja laserske svetlobe (DLS) z napravo Zetasizer. Uporabili smo tudi Fourierjevo infrardečo (FTIR) spektroskopijo z mikroskopom za štetje delcev na posameznem filtru in določali smo infrardeče (IR) spektre s tehniko oslabljenega popolnega odboja (ATR). Rezultati raziskave kažejo, da največ mikroplastičnih delcev vsebuje šampon Head & Shoulders classic clean, najmanj pa šampona L`Occitane en Provence in kamilični šampon proizvajalca Ilirija. Pri obeh nismo zaznali spremembe v masi filtra, kamilični šampon je imel le nekoliko več delcev, izmerjenih na filtru. Zanimivo je, da cena nima vpliva na vsebnost mikroplastike v šamponu.Source: Koraki v znanost [Elektronski vir] : revija za raziskovalno delo dijakov II. gimnazije Maribor. - ISSN 2670-6997 (Letn. IV, št. 1, 2023, str. 1-15)Type of material - e-articlePublish date - 2023Language - slovenianCOBISS.SI-ID - 159417347
Author
Kokalj, Viva
Topics
mikroplastika |
šampon za lase |
ATR-FTIR |
DLS |
kozmetika |
filtracija |
microplastics |
hair shampoo |
ATR-FTIR |
DLS |
cosmetics |
filtration
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