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Titolo:
EFFECT OF CONCENTRATION ON SORPTION OF DISSOLVED ORGANICS BY PVC, PTFE, AND STAINLESS-STEEL WELL CASINGS
Autore:
PARKER LV; RANNEY TA;
Indirizzi:
USA,COLD REG RES & ENGN LAB,72 LYME RD HANOVER NH 03755
Titolo Testata:
Ground water monitoring & remediation
fascicolo: 3, volume: 14, anno: 1994,
pagine: 139 - 149
SICI:
1069-3629(1994)14:3<139:EOCOSO>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
L.V. Parker e T.A. Ranney, "EFFECT OF CONCENTRATION ON SORPTION OF DISSOLVED ORGANICS BY PVC, PTFE, AND STAINLESS-STEEL WELL CASINGS", Ground water monitoring & remediation, 14(3), 1994, pp. 139-149

Abstract

This report examines sorption of low ppb levels of organic solutions by polytetrafluoroethylene (PTFE), rigid polyvinyl chloride (PVC), andstainless 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 similarstudy 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 PFTE 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 07:39:40