Influence of well casing composition on trace metals in ground water. Special report

Technical Report · Sat Apr 01 04:00:00 EST 1989

OSTI ID:5858741

Hewitt, A D

These experiments determined the concentration dependence of trace inorganic priority pollutants (As, Cd and Pb) in ground water solutions exposed to polyvinylchloride (PVC), polytetrafluoroethylene (PTFE) and two types of stainless steel (SS304 and SS316). The test design used a factorial screening matrix with two concentrations of metals (As-Cr-Pb, 50 and 10 micrograms/L; C/d, 10 and 2 micrograms/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 PTFE to have no significant influence on the metals monitored under any of the groundwater conditions. Metal concentrations in ground water exposed to SS316 and SS304 had large random variances believed to be caused by surface oxidation of the stainless steel. PVC had a more active surface than PTFE in terms of both sorption of Pb and of Cd.

• Research Organization: Cold Regions Research and Engineering Lab., Hanover, NH (USA)
• OSTI ID: 5858741
• Report Number(s): AD-A-208109/9/XAB; CRREL-SP-89-9
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ARSENIC
CADMIUM
CARBON COMPOUNDS
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
FLUORINATED ALIPHATIC HYDROCARBONS
GROUND WATER
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC COMPOUNDS
LEAD
METALS
MIXTURES
MONITORING
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
OXIDATION
OXYGEN COMPOUNDS
PIPES
POLLUTANTS
POLLUTION
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUOROETHYLENE
POLYVINYLS
PROGRESS REPORT
PVC
SEMIMETALS
SOLUTIONS
SORPTION
SPECTROSCOPY
SURFACES
WATER
WATER POLLUTION
WELL CASINGS