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.
There are two general types of arsenic compounds in water, food, air and soil: organic and inorganic (these together are referred to as âtotal arsenicâ). The inorganic forms of arsenic are the forms that have been more closely associated with long-term health effects.here are two general types of arsenic compounds in water, food, air and soil: organic and inorganic (these together are referred to as âtotal arsenicâ). The inorganic forms of arsenic are the forms that have been more closely associated with long-term health effects.