St. Helens Chronicle. The St. Helens woman has been missing for two weeks. Her boyfriend, currently in the Lane County jail for other offenses, is now considered a person of interest. Police are currently searching for St. Helens woman, Cheryl Hart, who has been missing for nearly two weeks.
First, there are typically two varieties, or species, of arsenic in water: arsenic 3 and arsenic 5.. This is significant because arsenic 3 is very difficult to remove from water and must be changed or oxidized to arsenic 5 before it can be removed.
Trace amounts of arsenic naturally exist in food and water. Arsenic is found in air, soil and water throughout the world. Therefore, it can also found in grains, fruits, vegetables and seafood due to absorption through soil and water. Plants take up trace amounts of arsenic from the soil, and we have been ingesting these trace amounts for all of human history.