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.
Arsenic is present in the environment as a naturally occurring substance or as a result of contamination from human activity. It is found in water, air, food and soil. There are two general types of arsenic: organic and inorganic.ome scientific studies have shown that two forms of organic arsenic found in apple juice, dimethylarsinic acid (DMA) and monomethylarsonic acid (MMA), may also be a health concern, and because of this, the FDA is considering how any possible health risk from these two forms of organic arsenic should be evaluated.