Toksičnost nakita od neplemenitih metala

master's thesis

• Title (english): Toxicity of non-precious metal jewellery
• Author: Uršula Apalović
• Mentor: Anita Štrkalj (mentor)
• Mentor: Zoran Glavaš (komentor)
• Committee member: Damir Hršak (predsjednik povjerenstva)
• Committee member: Anita Štrkalj (član povjerenstva)
• Committee member: Zoran Glavaš (član povjerenstva)
• Committee member: Ivan Brnardić (član povjerenstva)
• Committee member: Ljerka Slokar Benić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Metallurgy; Sisak
• Defense date and country: 2022-11-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy

Abstract

Ugljični čelik je materijal koji zbog svojih svojstava i cijene ima mnogo različitih namjena.
Nedostatak ovog materijala je taj što nema otpornost prema koroziji. Vrlo često se zbog toga
na ugljični čelik nanose različite prevlake.
U ovom radu praćena je migracija iona kroma, nikla i bakra iz prevlaka na ugljičnom čeliku
koji je korišten za izradu nakita. Nakit od čelika je stavljan u kontakt s modelnom otopinom
znoja da bi se simulirali uvjeti koji nastaju prilikom nošenja nakita uslijed interakcije kože
(znoja) i nakita. Dobiveni rezultati su pokazali da postoji značajna migracija navedenih iona u
otopinu znoja. Koncentracija migriranih iona ovisi o vremenu kontakta nakita i otopine, ali i o
debljini prevlake i eventualnim oštećenjima na nakitu. Za usporedbu rezultata provedena su
identična istraživanja na nakitu koji je napravljen od nehrđajućeg čelika.

Abstract (english)

Carbon steel is a material that is widely used for various purposes due to its properties and price.
However, it is not resistant to corrosion, which is one of the major drawbacks. Therefore,
different coatings are often applied to carbon steel. In this graduate thesis, the migration of
chromium, nickel and copper ions from coatings on carbon steel used for jewellery making was
monitored. Steel jewellery was placed in contact with a model solution of sweat to simulate the
conditions that occur during the interaction of jewellery and skin perspiration. The obtained
results showed that there is a significant migration of these ions into the perspiration solution.
The concentration of migrated ions depends on the contact time of the jewellery and the
solution, but also on the thickness of the coating and possible damage on the jewellery. To
compare the results, identical studies were performed on jewellery made of stainless steel.

• Keywords: čelik; nakit; teški metali; migracija iona
• Keywords (english): steel; jewellery; heavy metals; ion migration
• Language: croatian
• URN:NBN: urn:nbn:hr:115:283614
• Study programme: Title: Graduate study program Metallurgy; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka metalurgije (magistar/magistra inženjer/inženjerka metalurgije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-11-14 08:23:13