https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Opposed flame spread in narrow channel apparatus to assist in suppression studies https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13407 Wed 11 Apr 2018 15:01:06 AEST ]]> Friction factors for pipe flow of Xanthan: based concentrates of fire fighting foams https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13405 Wed 11 Apr 2018 13:26:13 AEST ]]> Formation of dioxin during smoldering of cca treated wood char https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13404 Wed 11 Apr 2018 13:23:44 AEST ]]> Dynamic surface and interfacial tension of afff and fluorine-free class B foam solutions https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13406 Wed 11 Apr 2018 12:25:47 AEST ]]> Fire properties of refuse-derived fuels: measurements of temperature profiles and mass loss https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13307 Wed 11 Apr 2018 12:25:04 AEST ]]> PCDD/F formation from heterogeneous oxidation of wood pyrolysates https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13308 Wed 11 Apr 2018 10:22:30 AEST ]]> Linseed oil and its tendency to self-heat https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13198 Mon 19 Aug 2024 10:40:23 AEST ]]> Formation of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans and their precursors in fires of pyrethroid pesticide alpha-cypermethrin https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13196 -1 and 384 pg ΣTEQ-WHO2005 g-1 of alpha-cypermethrin. 1-monochlorodibenzofuran was ranked as the most abundant congener. We also conducted the analyses of volatile organic compounds (VOC) attempting to identify the PCDD/F precursors by means of HRGCquadrupole mass spectrometry (QMS). The results of VOC revealed chlorobenzene, diphenyl ether, benzaldehyde, chlorotoluene, dichlorotoluene as important PCDD/F precursors.]]> Mon 19 Aug 2024 10:40:21 AEST ]]> Toxicants formed in fires of captafol pesticide https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13197 2CHCl2) group bonded to a tetrahydrophthalimide (C6H8(CO)2N-) moiety. The experiments were performed on a bench type apparatus, under conditions representing both under and well-ventilated non-flaming fires. The analyses of gaseous species relied on Fourier transform infra-red spectroscopy (FTIR) and micro gas chromatography (μGC), resulting in the identification and quantification of 11 gaseous products; among them, phosgene, thiophosgene and hydrogen cyanide. Gas chromatography - quadrupole mass spectrometry (GC-QMS) was employed to analyse the condensed products and volatile organic compounds (VOC), while a GC equipped with an ion trap mass spectrometer (GC-ITMS) was used to quantify polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F). The GC-QMS analysis determined several VOC toxicants; viz., trichloroethylene, tetrachloroethylene, benzonitrile and chlorinated benzenes. At higher temperature (600 °C), the oxidation of captafol led to the formation of mono- to hepta- CDD/F congeners including the most toxic 2,3,7,8-TCDD. In addition, the experimental results were compared to those of the other two sulfenimide fungicides, captan and folpet, both of which contain the thiotrichloromethyl (-SCCl3) moiety rather than the thiotetrachloroethyl group of captafol. It appears that the thiotetrachloroethyl group in captafol is responsible for the difference in the toxic pollutants formed, particularly influencing the distribution and yields of PCDD/F congeners. Combined with quantum chemical calculations, the results presented in this article provide an insightful understanding of fire chemistry of the sulfenimide fungicides, especially the pathways to the formation of major toxicants during the oxidative thermal decomposition of captafol.]]> Mon 19 Aug 2024 10:40:20 AEST ]]>