Impact of effects of acid precipitation on toxicity of metals.

摘要: Acid precipitation may increase human exposure to several potentially toxic metals by increasing metal concentrations in major pathways man, particularly food and water, some instances enhancing the conversion of species more forms. Human exposures methylmercury are almost entirely way consumption fish seafood. In countries, intakes this route approach levels that can give rise adverse health effects for population groups with a high these items. A possible from lakes affected acid thus be concern selected groups. lead reach near those associated certain sensitive segments general countries. The possibility exists increased caused through mobilization soils into crops. possibly influenced is an deterioration surface materials containing subsequent ingestion small children. similar situation regard uptake cadmium (at least countries). via drinking water precipitation. Decreasing pH increases corrosiveness salts soil; metallic compounds mobilized minerals, which eventually water. Also, dissolution (Pb, Cd, Cu) piping systems soft acidic waters corrosivity Exposures have occasionally reached range where expected otherwise healthy persons. Dissolution prevented neutralizing before distribution. Increased aluminum result mainly occurrence Al acidified natural use chemicals purification. If such used dialysis patients chronic renal failure, it cases dementia other disorders. influence on persons normal function (e.g., causing Alzheimer's disease) uncertain requires further investigation.(ABSTRACT TRUNCATED AT 400 WORDS)