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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 18 (1994), S. 193-199 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper identifies those fire conditions most often present when smoke toxicity is the cause of death. It begins with a review of the evidence that smoke-inhalation deaths are in the majority in fire fatalities in the United States. Next, there is an analysis of the evidence from the national fire experience showing the connection between post-flashover fires and smoke-inhalation deaths. Third is a presentation of real-scale fire test results demonstrating that post-flashover conditions are necessary to produce enough smoke to cause smoke-inhalation deaths in the cases where they actually occur. The fourth component is a sampling of results from computer simulations of fires, affirming and broadening the results from the fire tests. It is concluded that smoke-inhalation deaths occur predominantly after fires have progressed beyond flashover. This conclusion then provides a focus for smoke toxicity measurement in particular and fire hazard mitigation in general.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The infrared and Raman spectra (4000-50 cm-1) of polycrystalline K3N(SO3)3·2H2O have been recorded at 77K. Spectra of the 15N derivative, the anhydrous salt, an aqueous solution of the soluble sodium salt and K3N(SO3)3·2D2O have also been recorded. A normal coordinate analysis was applied to predict the 14N/15N isotopic frequency shifts. The potential energy distribution indicated extensive mixing of the normal modes. The N—S symmetric stretch is predicted to occur at 276 cm-1 (kN—S = 3.1 mdynes Å-1) and a Raman band at 293 cm-1 in the solid state spectrum is assigned to this mode. N—S antisymmetric stretching occurs at 912 and 887 cm-1 (888 and 861 cm-1 for 15N). The 14NS3 out-of-plane bending mode is mixed with NSO bending in features observed at 872 and 165 cm-1. The SO3 groups show characteristic group frequencies.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 11 (1981), S. 279-287 
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The polycrystalline IR and Raman spectra (4000-50 cm-1) of isoelectronic K2NH(SO3)2 and K2CH2(SO3)2 have been recorded at 77 K. These salts are isomorphous at ambient temperature (space group C2/c (C2h6)) but K2NH(SO3)2 undergoes a phase change on cooling to 77 K. Possible low-temperature structures for the latter are proposed and their predicted spectra are compared with the observed spectra. The phase change appears to be limited to an ordering of hydrogen atoms to give a structure with space symmetry P1(C11) with Z = 4. To assist with the band assignment, spectra of the 2H analogues of both salts and the 15N analogue of K2NH(SO3)2 have been recorded. Aqueous solution spectra, including qualitative Raman polarization data have also been obtained for the highly soluble salts (NH4)2NH(SO3)2 and Na2CH2(SO3)2·2.5H2O and their 2H analogues. For NH(SO3)22-, the skeletal modes are assigned frequencies of 858 cm-1 (νasymN—S), 842 cm-1 (νsymN—S) and c. 180 cm-1 (δNS2). The corresponding CH2(SO3)22- frequencies are 800 cm-1 (νasymC—S), 776 cm-1 (νsymC—S) and c. 180 cm-1 (δCS2). The SO3 groups show their characteristic frequencies which are very similar for both species.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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