Določanje ocetne kisline v muzejski atmosferi

diplomsko delo

Zala Kopčavar (Author), Matija Strlič (Mentor)

Abstract

Hlapne organske spojine so pogosta onesnaževala v zaprtih prostorih in predstavljajo potencialno nevarnost za zbirke kulturnih dediščin. Ireverzibilno poškodbo na muzejskih predmetih povzročajo predvsem karboksilne kisline z nizko molekulsko maso, dušikov dioksid, žveplov dioksid, acetaldehid, formaldehid, ozon in vodikov sulfid. Spremljanje njihovih koncentracij je posledično v interesu institucij, ki se ukvarjajo s skladiščenjem in ohranjanjem predmetov kulturne dediščine. Diplomsko delo sestoji iz pregleda literature o ocetni kislini, kot hlapnem organskem onesnaževalu, ki pospešuje razgradnjo anorganskih in organskih materialov. Predstavljeni so načini njene zaznave in kvantifikacije. V okviru eksperimentalnega dela so določene koncentracije štirih hlapnih onesnaževal: ocetne kisline, mravljične kisline, dušikovega dioksida in žveplovega dioksida. Analiti so vzorčeni s pomočjo pasivnih vzorčevalnikov, na osnovi adsorpcije s trietanolaminom, v muzeju Vasa (Stockholm, Švedska) in kvantificirani z ionsko kromatografijo. Določene koncentracije so v območju mejnih vrednosti za splošne muzejske zbirke. Primerjani so rezultati dveh študij izvedenih na enakih lokacijah v razmiku štirih mesecev. Na podlagi rezultatov je zaznan vpliv prisotnosti adsorbenta, ki zniža koncentracije analitov v zraku. Torej je uporaba adsorbentov z namenom preventivnega ohranjanja predmetov kulturne dediščine smiselna.

Keywords

hlapne organske spojine;ocetna kislina;analizne metode;ionska kromatografija;kulturna dediščina;pasivno vzorčenje;diplomska dela;

Data

Language:	Slovenian
Year of publishing:	2021
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[Z. Kopčavar]
UDC:	543.544:547.292:7.025(043.2)
COBISS:	80169219
Views:	302
Downloads:	59
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Determination of acetic acid in museum atmosphere
Secondary abstract:	Volatile organic compounds are common pollutants in enclosed spaces and present a potential threat for cultural heritage collections. Irreversible damage on museum objects is caused mainly by low molecular weight carboxylic acids, nitrogen dioxide, sulphur dioxide, acetaldehyde, formaldehyde, ozone and hydrogen sulphide. Monitoring their concentrations is therefore in the interest of institutions that store and handle objects of cultural heritage. This bachelor’s thesis consists of a literature review of acetic acid as a volatile organic pollutant that accelerates the deterioration of inorganic and organic materials. The detection and quantification techniques of acetic acid are presented. As part of the experimental work, the concentrations of four pollutants (acetic acid, formic acid, nitrogen dioxide, sulphur dioxide) are determined. The analytes are sampled using passive samplers, based on adsorption with triethanolamine, in the museum Vasa (Stockholm, Sweden) and are quantified using ion chromatography. Their determined concentrations are in the range of concentration limits for general museum collections. The results of two studies, sampled at the same locations four months apart, are compared. Based on the results the lowering of analyte concentrations in the air is caused by the adsorbent. Therefore, the use of adsorbents for the purpose of preventative preservation of cultural heritage objects is reasonable.
Secondary keywords:	volatile organic compounds;acetic acid;ion chromatography;cultural heritage;passive sampling;
Type (COBISS):	Bachelor thesis/paper
Study programme:	1000373
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemija
Pages:	32 str.
ID:	13356490