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Title: In situ measurement of volatile organic compounds in groundwater by methods coupled to the cone penetrometer

Abstract

The objective of this investigation was to interface an in situ, on-line sparging system with a cone penetrometer to provide direct analysis of volatile organic compounds (VOCS) in groundwater by on-site analysis. Transfer lines (15 m x 0.160- to 0.216-cm ID) composed of stainless steel, nickel, aluminum and Teflon{reg_sign} PFA, PTFE, and FEP were evaluated for their ability to quantitatively transfer chloroform, 1,1,1-trichloroethane, carbon tetrachloride, tetrachloroethylene, n-hexane, benzene, toluene, and o-xylene in the gas phase at 25 C. The water content of the gas stream had an insignificant effect on the quantitative transfer of VOCs through Teflon{reg_sign} tubing but was critical to efficiently transfer the compounds through metal tubing, particularly nickel. Transfer efficiencies for all eight analytes in moist gas streams through stainless steel tubing were greater than 95%. Toluene, tetrachloroethylene, and o-xylene were transferred with 93, 81, and 80% efficiency, respectively, when they were drawn through Teflon{reg_sign} PFA tubing at 25 C. The sorption of these VOCs by Teflon{reg_sign} tubing was reversible, and their transfer efficiencies improved to 94% when the tubing was flushed with 16 equivalent volumes of air. In general, the retention of the VOCs by Teflon{reg_sign} increased with decreasing aqueous solubility of the analyte. The efficienciesmore » at which VOCs were sparged from aqueous standards in Teflon{reg_sign} PFA, Type 304 stainless steel, and glass vessels were similar.« less

Authors:
; ; ; ;  [1]
  1. Argonne National Lab., IL (United States). Environmental Research Division
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
230958
Report Number(s):
CONF-950209-
TRN: IM9623%%268
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 4. international symposium on field screening methods for hazardous wastes and toxic chemicals, Las Vegas, NV (United States), 22-24 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of Field screening methods for hazardous wastes and toxic chemicals. VIP-47, Volume 1; PB: 733 p.
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; WATER POLLUTION; CHLORINATED ALIPHATIC HYDROCARBONS; MONITORING; HEXANE; BENZENE; TOLUENE; XYLENES; MEASURING INSTRUMENTS; PERFORMANCE; VOLATILE MATTER; CHLOROFORM; CARBON TETRACHLORIDE; TECHNOLOGY ASSESSMENT

Citation Formats

Doskey, P V, Aldstadt, J H, Kuo, J M, Costanza, M S, and Erickson, M D. In situ measurement of volatile organic compounds in groundwater by methods coupled to the cone penetrometer. United States: N. p., 1995. Web.
Doskey, P V, Aldstadt, J H, Kuo, J M, Costanza, M S, & Erickson, M D. In situ measurement of volatile organic compounds in groundwater by methods coupled to the cone penetrometer. United States.
Doskey, P V, Aldstadt, J H, Kuo, J M, Costanza, M S, and Erickson, M D. Sun . "In situ measurement of volatile organic compounds in groundwater by methods coupled to the cone penetrometer". United States.
@article{osti_230958,
title = {In situ measurement of volatile organic compounds in groundwater by methods coupled to the cone penetrometer},
author = {Doskey, P V and Aldstadt, J H and Kuo, J M and Costanza, M S and Erickson, M D},
abstractNote = {The objective of this investigation was to interface an in situ, on-line sparging system with a cone penetrometer to provide direct analysis of volatile organic compounds (VOCS) in groundwater by on-site analysis. Transfer lines (15 m x 0.160- to 0.216-cm ID) composed of stainless steel, nickel, aluminum and Teflon{reg_sign} PFA, PTFE, and FEP were evaluated for their ability to quantitatively transfer chloroform, 1,1,1-trichloroethane, carbon tetrachloride, tetrachloroethylene, n-hexane, benzene, toluene, and o-xylene in the gas phase at 25 C. The water content of the gas stream had an insignificant effect on the quantitative transfer of VOCs through Teflon{reg_sign} tubing but was critical to efficiently transfer the compounds through metal tubing, particularly nickel. Transfer efficiencies for all eight analytes in moist gas streams through stainless steel tubing were greater than 95%. Toluene, tetrachloroethylene, and o-xylene were transferred with 93, 81, and 80% efficiency, respectively, when they were drawn through Teflon{reg_sign} PFA tubing at 25 C. The sorption of these VOCs by Teflon{reg_sign} tubing was reversible, and their transfer efficiencies improved to 94% when the tubing was flushed with 16 equivalent volumes of air. In general, the retention of the VOCs by Teflon{reg_sign} increased with decreasing aqueous solubility of the analyte. The efficiencies at which VOCs were sparged from aqueous standards in Teflon{reg_sign} PFA, Type 304 stainless steel, and glass vessels were similar.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {12}
}

Conference:
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