Researchers use calcium materials to reduce arsenic availability in agricultural soil

Of all the heavy metals appearing as pollutants in agricultural soil, arsenic (As) poses the greatest threat to human health. As is a common pollutant in upland arable soils, which account for nearly 90% of the world’s agricultural soil. In its pentavalent form, known as arsenate [As(V)], As is easily absorbed by crops grown in these soils and, through them, enter the human body.  Read More