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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 is 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 line materials (15 m {times} 0.160--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. 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 quantitative transfer of the compounds through metal tubing, particularly for nickel. Transfer efficiencies for all 7 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 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 efficiency at which VOCs were spargedmore » 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 Div.
Publication Date:
Research Org.:
Argonne National Lab., IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
28297
Report Number(s):
ANL/ER/CP-83078; CONF-950209-2
ON: DE95008269; TRN: AHC29510%%102
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]
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; CONTAMINATION; HEXANE; MONITORING; BENZENE; TOLUENE; XYLENES; CHLORINATED ALIPHATIC HYDROCARBONS; SAMPLERS; ACCURACY; WATER POLLUTION; MEASURING METHODS; 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. Wed . "In situ measurement of volatile organic compounds in groundwater by methods coupled to the cone penetrometer". United States. https://www.osti.gov/servlets/purl/28297.
@article{osti_28297,
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 is 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 line materials (15 m {times} 0.160--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. 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 quantitative transfer of the compounds through metal tubing, particularly for nickel. Transfer efficiencies for all 7 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 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 efficiency 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 = {3}
}

Conference:
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