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.
Metric units of mass. Mass is measured in grams (g), kilograms (kg) and tonnes. These are known as metric units of mass. 1 kg = 1000 g. 1 tonne = 1000 kg. Remember when estimating mass: 100g is about the mass of a small apple.1 kg is the mass of a bag of sugar or a litre of water.etric units of mass. Mass is measured in grams (g), kilograms (kg) and tonnes. These are known as metric units of mass. 1 kg = 1000 g. 1 tonne = 1000 kg. Remember when estimating mass: 100g is about the mass of a small apple.