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The new RoHS directive requires more information and conformity checks than the first RoHS legislation. In order to issue the declaration of conformity for CE marking, the technical documentation must proof the device's compliance with the substance bans. According to the REACH regulation, suppliers of articles have to inform professional clients and consumers, the latter only on request, about substances...
Lead, cadmium, zinc, manganese, chromium, cobalt, copper, and molybdenum concentrations were measured in 50 samples of placenta tissues. The samples came from Tychy in the Upper Silesian Industrial District (Poland), where the population is exposed to enormously increased levels of heavy metals. GFAAS technique was used. Various methods of ashing samples were examined. Wet ashing under pressure in...
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