Heavy metals naturally occur in the Earth's crust, but human activities can increase their concentration in the environment, ...

A child would need to eat 9,000 cookies in a day to approach harmful levels of pesticide or naturally occurring heavy metals.

"The toxicity of arsenic is based on this risk of confusion," says Lenny Winkel, Professor at the Institute of Biogeochemistry and Pollutant Dynamics at ETH Zurich, and the aquatic research ...

Heavy metal contamination in Yangshan Port raises concerns for seafood safety, with arsenic and mercury posing health risks.

Arsenic not only is a potent human carcinogen ... laboratory chief at the Division of the National Toxicology Program. He is one of the authors of a June 2012 report funded in part by the National ...

In late 2012 we released our original report on arsenic in rice, in which we found measurable levels in almost all of the 60 rice varieties and rice products we tested. Our most recent testing and ...

For information on how much arsenic constitutes a low risk, we referred to the Food Standards Agency’s Committee on Toxicity in Food. Our calculations also assumed that the rice contained ...

Using zinc and sulfuric acid to create arsine gas, this test is highly sensitive to even small levels of arsenic. The Marsh Test, as it was known, was the first use of toxicology in a jury trial.

Sickness has been common for years in Tsumeb, where Dundee Precious Metals was the biggest employer for more than a decade. Tests have now found the soil is contaminated with arsenic and other heavy m ...