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Titolo:
SAMPLING TRACE-LEVEL ORGANIC SOLUTES WITH POLYMERIC TUBING PART-2 - DYNAMIC STUDIES
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: 1, volume: 18, anno: 1998,
pagine: 148 - 155
SICI:
1069-3629(1998)18:1<148:STOSWP>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
L.V. Parker e T.A. Ranney, "SAMPLING TRACE-LEVEL ORGANIC SOLUTES WITH POLYMERIC TUBING PART-2 - DYNAMIC STUDIES", Ground water monitoring & remediation, 18(1), 1998, pp. 148-155

Abstract

This is the second part of a study conducted to determine whether polymeric sampling tubing can affect organic analyte concentrations during a sampling event. In this part of the study, we looked for sorption and desorption of trichloroethylene (TCE) and leaching of organic constituents in water pumped through five types of polymeric tubing. The materials tested were a rigid fluoropolymer, a flexible fluoropolymer, low-density polyethylene (LDPE), and two plasticized polypropylene tubings. The effects of tubing length and flow rate were examined. The least sorptive tubings, both initially and at equilibrium, were the fluoropolymers. However, in some instances the LDPE tubing had little effect on TCE concentrations. This was when a slow flow rate was used to sample relatively shallow wells (50 feet [15 m] or less) or when a faster flow rate (1 L/min) was used to sample wells that are less than 500feet (152 m). Further testing is recommended using more sorptive analytes. Using high performance liquid chromatography (HPLC), we were unable to detect any constituents leaching from any of the tubings used in these studies, even when a slow flow rate was used. However, desorption of Sorbed analytes is a concern for all the tubings tested, including the rigid fluoropolymer.

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Documento generato il 01/10/20 alle ore 06:55:37