Processing nutrient imbalance

Metal contamination is a dangerous cause of water pollution, and it constitutes a major health hazard (An et al, 2001 Molinari et al, 2004). Some metal ions play an essential role in many biological processes, and their deficiency, unusual accumulation or imbalance, may lead to biological problems. For example, Cu + ion is an essential nutrient, but when people are exposed to Cu levels of above 1.3 mg L for short periods of time, stomach and intestinal problems can occur. Long-term exposure to Cu + leads to kidney and liver damage. 

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