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… that the top 20 substances were the well-known suspects: heavy metals, polycyclic aromatic hydrocarbons (PAHs), … of associations of pollutants with mental health, such as heavy metals. Although the changing exposure patterns are … There is an oversupply of studies on old chemicals such as heavy metals and already banned POPs. There may be various …

… rivers. Examples of pollutants are agricultural chemicals, heavy metals and nuclear waste. Once in the marine …

… procedure (ASTM D 3613-92) of syringe-sampling and metal-cylinder-sampling could be followed for the sampling of … in the production and maintenance of electric equipment, heavy machinery, such as transformers, capacitors, circuit … the sectors of energy,transportation, transformation and heavy chemicals industries, have declared to hold about 1,400 …