Smoking trials with mercury contaminated cigarettes. Studies of attempted poisoning]

In the context with an attempted poisoning it was investigated, to which extent an intoxication can be caused by smoking cigarettes, which contain elementary mercury. With a smoking apparatus the effect of the amount (9 mg to 1.4 g) and of the distribution of the Hg within the cigarette on its concentration in the mainstream and sidestream smoke as well as in the ash and the filter was analytically determined. It follows from these experiments, that at a good distribution almost independently of the amount involved only up to 2 mg Hg per cigarette are inhalated with the mainstream smoke, whereas up to 97% are found in the sidestream smoke. In the ash and the filter only small amounts are detected. By comparison with cases described in literature it is shown, that a poisoning by such cigarettes is possible only after frequent smoking or by passive smoking via the sidestream smoke in small and badly aerated rooms.