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Title: Influence of well casing composition on trace metals in ground water
Authors: U.S. Army Toxic and Hazardous Materials Agency
Hewitt, Alan D. (Alan Dole)
Keywords: Ground water monitoring
Well casing
Ground water testing
Water pollution
Inorganic pollutants
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 89-9.
Description: Special Report
Abstract: These experinlents determined the concentration dependence of trace inorganic priority pollutants (As, Cd, Cr and Pb) in ground water solutions exposed to polyvinylchloride (PVC), polytetrafluoroethylene (PIFE) and two types of stainless steel (55304 and 55316). The test design used a factorial screening matrix with two concentrations of metals (As-Cr-Pb, 50 and 10 ~g/L; Cd, 10 and 2 ~g/L), pH (5.8 and 7.7), and total organic carbon (natural and natural plus 5 mg/L humic acid) as variables. Samples containing well casings and controls without pipe sections were run as duplicates. Aliquots were removed from all of the solutions after 0.5, 4, 8, 24 and 72 hours. Aqueous metal concentrations were determined by graphite furnace atomic absorption spectroscopy. The results showed PIFE to have no significant influence on the metals monitored under any of the groundwater conditions. Metal concentrations in ground water exposed to 55316 and 55304 had large random variances believed to be caused by surface oxidation of the stainless steel. PVC had a more active surface than PIFE in terms of both sorption of Pb and release of Cd. Note: Certain scientific symbols could not be rendered by the character set of this program. ~ has been used to indicated a missing symbol. The file will contain the missing symbols.
Rights: Approved for Public Release. Distribution is Unlimited.
Appears in Collections:Special Report

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