Zink- och Titanroek: Kemisk Sammansaettning och Fysikaliska Egenskaper (Zinc- and Titanium Smoke: Chemical Composition and Physical Characteristics)
(Englisch)
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Smoke was generated from zinc/hexachloroethane and titanium dioxide/hexachloroethane pyrotechnical mixtures in a closed space. The following parameters were investigated: smoke concentration, particle size distributions and chemical composition of the smoke. Zinc hydroxy acids, which are strong acids, are formed during combustion of the zinc munition. The titanium tetrachloride formed in smoke from the titanium dioxide munition will rapidly hydrolyze to hydrogen chloride and titanium dioxide. Several chlorinated organic substances are formed from both types of smoke munitions during combustion. Some of these substances have well documented toxic and mutagenic effects, for example hexachlorobenzene, hexachlorobutadiene and chlorinated dibenzofurans and dibenzodioxins. The amount of byproducts formed is higher from the titanium dioxide/hexachloroethane munition than from the zinc munition.