Marine sediment, lead emissions

Mining, smelting and refining of lead, as well as the production and use of lead-based products give rise to release of lead into the environment. This takes the form primarily of either lead-rich aqueous effluent streams, or emission of fume and dust into the air. A large part of the lead discharged into surface waters is rapidly incorporated into suspended and bottom sediments, and most of this lead wiU ultimately be found in marine sediments. Of greater concern, however, is the emission of lead into the atmosphere. The finer aerosol particles... 

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