Accessing Potential Bioaccumulation of Heavy Metals in Selective Vegetables from Gujranwala District, Pakistan

摘要: Heavy metals, such as cadmium, copper, lead, chromium and mercury, are important environmental pollutants, particularly in areas with high anthropogenic pressure. Their presence the atmosphere, soil water, even traces can cause serious problems to all organisms, heavy metal bioaccumulation food chain especially be highly dangerous human health. metals enter body mainly through two routes namely: inhalation ingestion, ingestion being main route of exposure these elements population. intake by populations has been reported many countries. Soil threshold for toxicity is an factor affecting capacity determines cumulative loading limits. For soil-plant system, highest permissible content (total or bioavailable concentration) that does not pose any phytotoxic effects edible parts crops exceed hygiene standards. Factors thresholds dietary soil-crop system include: type which includes pH, organic matter content, clay mineral other chemical biochemical properties; crop species cultivars regulated genetic basis transport accumulation plants. In addition, interactions root-microbes play roles regulating movement from crops. Agronomic practices fertilizer water managements well rotation affect bioavailability thus influencing assessing chain. This paper reviews vegetables assesses potential toxicity.