Tips & Warnings. Steam the tamales in a specified steamer basket. If you have a steamer pot or basket that does not use a stove top for heating, you will need to pour boiling water into the base of the pot and cover with a lid for 1 to 2 hours. Make reference to the instruction manual provided for your particular model to verify.
Arsenic is a trace element that occurs naturally in very small amounts in the diet. Its exact functions are not known. The estimated adult daily intake of arsenic from a typical diet is 12-50 mcg. A dietary requirement of 12-25 mcg/day has been suggested.
1 Arsenic is an element and is a naturally occurring mineral found widely in the environment. 2  Arsenic exists in four common valence states. 3  Arsenic is widely used commercially, a fact that increases the risk of overexposure.rsenic is an element and a naturally occurring mineral found widely in the environment. Arsenic mineral ores, orpiment (left) and realgar (right). Environmental sources of arsenic exposure are. Because it is an element, arsenic persists in the environment and does not deteriorate. 1  food, 2  water,