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.
    'Weight' is a force due to gravity and, therefore, is  measured in newtons in SI. Weight is measured using a spring  balance, calibrated in newtons.Because weight is affected by  gravity, an object of given mass will have a different weight,  according to where it is measured.     'Mass', on the other hand, is measured in kilograms in SI.Mass is  measured by comparing an object of unknown mass with a known mass,  using a scales balance. kilogram is 2.2 lbs, so it is more useful for everyday objects. Things such as â¦ people, furniture, cars, etc. could be measured in kilograms while objects like paper, small amounts of gold, or mail could be measured in grams. 1 kilogram is equal to 1000 grams.