Usporedba dviju metoda određivanja klorida u prirodnim i otpadnim vodama

undergraduate thesis

• Author: Nina Leto
• Mentor: Branka Vojnović (mentor)
• Committee member: Snježana Firšt Rogale (predsjednik povjerenstva)
• Committee member: Branka Vojnović (član povjerenstva)
• Committee member: Tanja Pušić (član povjerenstva)
• Committee member: Mario Cetina (član povjerenstva)
• Granter: University of Zagreb; Faculty of Textile Technology; Zagreb
• Defense date and country: 2023-09-12, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Textile Technology; Textile Chemistry

Abstract

Ioni klorida su jedni od najčešće prisutnih anorganskih aniona u prirodnim i otpadnim vodama. Prevelike koncentracije klorida u prirodnim vodama mogu imati negativne učinke na žive organizme, a isto tako mogu oštetiti i metalne dijelove uređaja u tehnološkim procesima zbog pojave korozije. Također, povećana koncentracija klorida u prirodnim vodama ukazuje na onečišćenje kemijskim tvarima. Stoga je odgovarajućim analitičkim metodama potrebno pratiti sadržaj klorida u vodi za ljudsku potrošnju, u prirodnim vodama ali i u tehnološkim te otpadnim vodama. U ovome radu uspoređene su se dvije brze volumetrijske metode za određivanje klorida u navedenim uzorcima voda: merkurimetrijska i agrentometrijska (Mohrova). Određene su izvedbene karakteristike obiju metoda koje su se statistički međusobno usporedile. Za određivanje klorida nižih koncentracija prikladnija je merkurimetrijska metoda dok se za veće koncentracije argentometrijska metoda pokazala točnijom, ali i okolišno prihvatljivijom.

Abstract (english)

Chloride ions are one of the most abundant inorganic anions in natural waters and waste waters. Excessive chloride concentrations in natural waters can have negative effects on living organisms and can also damage metal parts of equipment in technological processes through corrosion. In addition, increased chloride concentrations in natural waters indicate contamination with chemical substances. Therefore, it is necessary to monitor the chloride content in water for human consumption, in natural waters, but also in technological waters and waste waters using appropriate analytical methods. In this work, two rapid volumetric methods for the determination of chloride in the aforementioned water samples were compared: mercurimetric and agrentometric (Mohrova). The performance characteristics of the two methods were determined and statistically compared. For the determination of chloride at lower concentrations, the mercurimetric method is more suitable, while the argentometric method proved to be more accurate at higher concentrations, but also more environmentally friendly.

• Keywords: kloridi; prirodne vode; otpadne vode; merkurimetrija; argentometrija
• Keywords (english): chloride; natural waters; waste waters; mercurimetric titration; agrentometric titration
• Language: croatian
• URN:NBN: urn:nbn:hr:201:317918
• Study programme: Title: Textile Technology and Engineering; specializations in: Clothing Engineering, Textile Design and Management, Industrial Textile and Clothing Design, Textile Chemistry, Materials and Ecology, Textile Chemistry, Materials and Ecology; Course: Textile Chemistry; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka tekstilne tehnologije i inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka tekstilne tehnologije i inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-07-24 09:35:44