Effect of concentration on sorption of dissolved organics by PVC, PTFE, and stainless steel well casings

Journal Article · · Ground Water Monitoring and Remediation; (United States)

DOI:https://doi.org/10.1111/j.1745-6592.1994.tb00475.x· OSTI ID:7079367

Parker, L V; Ranney, T A

This report examines sorption of low ppb levels of organic solutions by polytetra-fluoroethylene (PTFE), rigid polyvinyl chloride (PVC), and stainless steel 304 and 316 well casings. Nineteen organics were selected, including several munitions and chlorinated solvents. Compounds were selected to offer a range of physical properties, such as solubility in water, octanol/water partition coefficient, and molecular structure. When these results were compared with the results from a similar study conducted at ppm levels, the rate and extent of sorption by PTFE and PVC were the same as seen previously for almost all analytes. There were no losses of any compounds associated with stainless steel. At these low levels (ppm and ppb), the rate of diffusion within the polymer (PVC and PTFE) is independent of concentration. Only with PTFE are the rates rapid enough to be of concern when monitoring for some contaminants in ground water. Tetrachloroethylene was the compound PTFE sorbed the most rapidly. The study showed that PVC well casings are suitable for monitoring low levels (ppm and ppb) of organics.

• OSTI ID: 7079367
• Journal Information: Ground Water Monitoring and Remediation; (United States), Vol. 14:3; ISSN 1069-3629
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CHLORINATED ALIPHATIC HYDROCARBONS
SORPTIVE PROPERTIES
ORGANIC COMPOUNDS
SORPTION
PVC
WATER POLLUTION
WATER WELLS
HALOGENATED ALIPHATIC HYDROCARBONS
ORGANIC CHLORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
POLLUTION
POLYMERS
POLYVINYLS
SURFACE PROPERTIES
WELLS
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)