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Green leafy vegetables irrigated with wastewater may contain high levels of toxic heavy metals

A study published in the IOSR Journal of Environmental Science, Toxicology and Food Technology showed that irrigating agricultural fields and green leafy vegetables  with wastewater may result in potentially hazardous buildup of heavy metals including copper, lead and zinc, as well as nickel, chromium and cadmium.  “On the survey of study area, it was found that continuous irrigation of agricultural land with sewage and wastewater may be possible reasons of heavy metal accumulation in the soil and vegetables. The pesticides, agrochemical and chemical fertilizers used in the agricultural field are also known to be major sources of heavy metal pollution in study areas,” the researchers said.  Read more...

 

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