ASTM D7203-06

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D 7203 – 06
Standard Test Method for
Screening Trichloroethylene (TCE)-Contaminated Media
1
Using a Heated Diode Sensor
This standard is issued under the fixed designation D 7203; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope D 4547 Guide for Sampling Waste and Soils for Volatile
Organic Compounds
1.1 This test method describes procedures for screening
D 5681 Terminology for Waste and Waste Management
media known to contain the halogenated volatile organic
compound (HVOC), trichloroethylene (TCE). Procedure A is
3. Terminology
to be used for screening soil known to contain TCE and
3.1 Definitions—Fordefinitionsoftermsusedinthisscreen-
ProcedureBistobeusedforscreeningwaterknowntocontain
ing test method, refer to Terminology D 5681.
TCE.
1.1.1 Both Procedures A and B involve measuring the TCE
4. Summary of Test Method
concentration in the headspace above a sample using a heated
4.1 Procedure A—To estimate the concentration of TCE in
diode sensor device. From this measurement, an estimated
a soil known to contain TCE contamination, a sample of the
concentration of TCE in the sample can be determined. Any
soil is added to a glass jar having an open-top cap with a
TCE remaining in the sample is not measured. Any other
PTFE-bonded silicone septum. At the time of screening, the
HVOC present in the sample will be reported as TCE.
temperature of the soil in the jar should be approximately 50 to
1.2 Procedure A can also be used for screening the head-
120 ºF (10 to 49 ºC). The soil in the jar is shaken and allowed
space above a soil suspected of containing HVOC contamina-
tosettlefor10min,sotheTCEcanpartitionintotheheadspace
tion to indicate the presence or absence of HVOC contamina-
above the soil. After 10 min, the TCE concentration in the
tion in the soil. Procedure B can also be used for screening the
headspace is measured using a heated diode sensor device,
headspace above a water suspected of containing HVOC
which gives a numerical voltage reading. The voltage reading
contamination to indicate the presence or absence of HVOC
3
from the device is converted to a mg/m value of TCE in the
contamination in the water. For both procedures, any HVOC
headspace in the container. Using this value, an estimated
contamination remaining in the soil or water is not detected by
concentration of TCE in the soil in mg/Kg can be calculated.
this test method.
Any TCE remaining in the soil sample is not measured by this
1.3 This standard does not purport to address all of the
test method. Any other HVOC present in the soil will be
safety concerns, if any, associated with its use. It is the
reported as TCE.
responsibility of the user of this standard to establish appro-
4.1.1 To use Procedure A to screen a soil suspected of
priate safety and health practices and determine the applica-
containing HVOC contamination, a sample of the soil is added
tion of regulatory limitations prior to use.
to a glass jar having an open-top cap with a PTFE-bonded
NOTE 1—The diode sensor is heated to temperatures ranging between
silicone septum. At the time of screening, the temperature of
approximately 600 and 1000 ºC (see 6.1.5) and as a result could be a
the soil in the jar should be approximately 50 to 120 ºF (10 to
source of ignition.
49 ºC).The soil in the jar is shaken and allowed to settle for 10
min, so the HVOC can partition into the headspace above the
2. Referenced Documents
soil. After 10 min, the heated diode sensor device is used to
2
2.1 ASTM Standards:
screen the headspace in the container. The numerical voltage
reading from the device indicates the presence or absence of
HVOC contamination in the soil. Any HVOC contamination
1
This test method is under the jurisdiction of ASTM Committee D34 on Waste
remaining in the soil is not detected by this procedure.
Management and is the direct responsibility of Subcommittee D34.01.05 on
4.2 Procedure B—To estimate the concentration of TCE in
Screening Methods.
water known to contain TCE contamination, a sample of the
Current edition approved Oct. 1, 2006. Published November 2006. Originally
approved in 2005. Last previous edition approved in 2005 as D 7203-05.
water is added to a glass jar having an open-top cap with a
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
PTFE-bonded silicone septum. At the time of screening, the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
temperature of the water in the jar should be approximately 50
Standards volume information, refer to the standard’s Document Summary page on
t
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