20.500.12556/RUL-186512 Določanje celokupnih hlapnih organskih spojin v notranjem okolju The determination of total volatile organic compounds in indoor air Hlapne organske spojine (HOS) so tiste organske kemijske spojine, ki so pri sobni temperaturi z visokim parnim tlakom v plinastem stanju in se sproščajo iz gradbenih materialov, lakov, barv, dišav ter muzejskih eksponatov. Cilj eksperimentalnega dela je bil določiti koncentracije celokupnih HOS v različno velikih prostorih z različnimi materiali z različno starostjo. Hkrati je bil namen določiti vpliv dodanih parfumov in ljudi na spremembo koncentracij celokupnih HOS. Meritve so bile izvedene s prenosno napravo Honeywell ppbRAE 3000+, ki vsebuje fotoionizacijski detektor z UV svetilko z energijo 10,6 eV. Pri določitvi umeritvene krivulje je bil uporabljen plin toluen, ki je izhajal iz permeacijske naprave. Z meritvami koncentracije ogljikovega dioksida je bila ugotovljena hitrost izmenjave zraka v prostoru brez ventilacije ter z zaprtimi okni in vrati. Iz tega je bilo možno oceniti čas zadrževanja dodanega parfuma v prostoru. Iz rezultatov meritev v galerijskih, muzejskih in knjižničnih prostorih je mogoče oceniti količine emitiranih HOS in posledično kakovost zraka v notranjih prostorih. Volatile organic compounds (VOC) are organic chemical compounds that, due to their high vapour pressure, are present in the gaseous phase at room temperature and are released from sources such as building materials, varnishes, paints, fragrances, and museum exhibits. The aim of the experimental part was to determine the concentrations of total VOCs in spaces of different sizes containing various materials and objects of different ages. In addition, the purpose was to determine the influence of added fragrances and human presence on changes in total VOC concentrations. The measurements were performed using a portable Honeywell ppbRAE 3000+ instrument, which contains a photoionization detector equipped with a UV lamp with an energy of 10.6 eV. The calibration curve was established using toluene gas generated by a used permeation device. Measurements of carbon dioxide concentration were used to determine the air exchange rate in a room without ventilation and with closed windows and doors. Based on this, the retention time of the added fragrance in the room was estimated. The measurement results obtained in gallery, museum, and library spaces enabled the assessment of emitted VOC quantities and, consequently, the evaluation of indoor air quality. celokupne hlapne organske spojine fotoionizacijski detektor parfumi predmeti kulturne dediščine total volatile organic compounds photoionization detector parfumes objects of cultural heritage true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-02 14:05:09 2026-09-02 14:05:18 2026-09-18 10:01:45 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 25790 291566083 Gavric_Mark_-_Dolocanje_celokupnih_hlapnih_organskih_spojin_v_notranjem_okolju.pdf Gavric_Mark_-_Dolocanje_celokupnih_hlapnih_organskih_spojin_v_notranjem_okolju.pdf 1 A41867EE7C687F5966F8B786A75FF049 a06b97e70d9ef78bff76ecada9e2b7933920c00576fb7e66d0ddc3a2a842fae4 28a8dd6c-a6c6-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245783 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0