dissolved arsenic in groundwater caused by hydrocarbons
Arsenic has been observed in groundwater in association with petroleum-impacted aquifers at a variety of sites. During anaerobic biodegradation of hydrocarbons, Fe(III)-reducing microorganisms can couple the reduction of solid phase Fe(III)-oxides to soluble Fe(II) with the oxidation of petroleum compounds.he resulting mass loading is calculated to be 17.35 grams per year or 4.15 x 10 -5 grams per year per square foot. The associated predicted groundwater concentration is 1.8 Âµg/L. These results correlate well with the low concentrations of arsenic observed in groundwater across most of the refinery.