Calcium-disodium EDTA and DMSA are only approved for the removal of lead by the Food and Drug Administration while DMPS and TTFD are not approved by the FDA. These drugs bind to heavy metals in the body and prevent them from binding to other agents.
The kilogram is the SI unit of mass and it the almost universally used standard mass unit. The associated SI unit of force and weight is the Newton, with 1 kilogram weighing 9.8 Newtons under standard conditions on the Earth's surface.
http://www.scienceforce.org/ Â© 2006 Science Expeditionary Force Mass and weight are two different ways to measure matter. Mass is a measure of the amount of matter (âstuffâ) in an object. Mass does not change. Weight is dependent on location and can vary depending on where it is measured.