The Science of the total environment
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Sci. Total Environ. · Apr 1979
ReviewPotential halogenated industrial carcinogenic and mutagenic chemicals. IV. Halogenated aryl derivatives.
A variety of halogenated aryl derivatives possess significant activity as solvents for pesticides, heat transfer agents, pesticide intermediates, additives for rubber products, intermediates in organic synthesis and as insect repellants and deodorants. Ortho- and para-dichlorobenzenes; 1,2,4-trichloro- and hexachlorobenzene, as well as bromobenzenes and benzylchloride were reviewed principally in terms of their synthesis, areas of utility, stability, distribution, reactivity, levels of exposure, populations at risk, metabolism, carcinogenicity and mutagenicity.
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Sci. Total Environ. · Sep 1978
EEG-responses caused by environmental noise during sleep their relationships to exogenic and endogenic influences.
At a certain level of intensity acoustical stimuli occurring during the night lead to sleep disorders. Whereas presumed after-effects (decrease of performance, functional and organic diseases) can as yet not be related to noise, it is evident that the primary effects which can be recorded immediately after stimulus onset are caused by noise. Because of the small number of experimental trials carried out in different investigations, the results of each single paper can only be tentative. ⋯ The results and influence of several exogenic and endogenic factos are demonstrated. Becuase of the different methods used only 10 out of 60 publications have been used. In spite of this restriction of data, at least as far as trends are concerned, they appear to be consistent; numerical results should at this stage only be regarded as tentative.