Bring the water to a boil, then turn the heat to medium-low and cover the pot with a lid. Steam the tamales for up to 2 hours or until the masa dough is firm. Check the level of water from time to time and do not let it run dry. Allow the tamales to cool for at least 5 minutes before unwrapping them for serving.
Arsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. Arsenic is a metalloid. It can exist in various allotropes, although only the gray form has important use in industry.he most common oxidation states for arsenic are: â3 in the arsenides, such as alloy-like intermetallic compounds; and +3 in the arsenites, arsenates(III), and most organoarsenic compounds. Arsenic also bonds readily to itself as seen in the square As 3â 4 ions in the mineral skutterudite.
Click links below for information: Arsenic occurs naturally in the earthâs crust. Most arsenic in drinking water comes from natural rock formations. As water flows through these formations, it can dissolve arsenic and carry it into underground aquifers, streams, or rivers that may become drinking water supplies. Arsenic also can come from human activities, such as mining or smelting ores that contain arsenic. Read more... View Arsenic Detections in Washington Public Water Supplies