1、Designation:D641809Standard Practice forUsing the Disposable En Core Sampler for Sampling andStoring Soil for Volatile Organic Analysis1This standard is issued under the fixed designation D6418;the number immediately following the designation indicates the year oforiginal adoption or,in the case of
2、revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice is intended for application to soils that maycontain volatile waste constituents.1.2 Thi
3、s practice provides a procedure for using the dispos-able En Core2sampler to collect and store a soil sample forvolatile organic analysis.1.3 It is recommended that this standard be used in conjunc-tion with Guide D4547 and Guide D4687.1.4 The values stated in SI units are to be regarded asstandard.
4、No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bilit
5、y of regulatory limitations prior to use.NOTE1ASTM takes no position respecting the validity of any patentrights asserted in connection with any item mentioned in this standard.Users of this standard are expressly advised that determination of thevalidity of any such patent rights,and the risk of in
6、fringement of suchrights,are entirely their own responsibility.2.Referenced Documents2.1 ASTM Standards:3D2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD4547 Guide for Sampling Waste and Soils for VolatileOrganic CompoundsD4687 Guide for Gen
7、eral Planning of Waste SamplingD5792 Practice for Generation of Environmental Data Re-lated to Waste Management Activities:Development ofData Quality Objectives3.Summary of Practice3.1 This practice provides a procedure for using the dispos-able En Core sampler to collect and store a soil sample ofa
8、pproximately 5 or 25 g for volatile organic analysis.The EnCore sampler,which consists of a coring body/storagechamber,O-ring sealed plunger,and O-ring sealed cap,isdesigned to collect and hold a soil sample during shipment tothe laboratory for analysis.3.2 After the sample is collected in the En Co
9、re sampler,thecoring body/storage chamber is sealed with a slide-on cap andimmediately becomes a sample storage chamber.To minimizeloss of volatile compounds due to volatilization,orbiodegradation,or both,from the time of collection untilanalysis or chemical preservation in the laboratory(see GuideD
10、4547),sample storage options are specified at 4 6 2C for upto 48 h;at 7 to 21C for up to 14 days;or at 4 6 2C for upto 48 h followed by storage at 7 to 21C for up to five days(see Appendix X1 and reports referenced in footnotes 4,5,and6 for information on the performance of the En Core samplerunder
11、these storage conditions).4,5,6Storage of samples in theEn Core sampler at 4 6 2C or 7 to 21C for longer holdingtimes than those listed above is an option,provided it can beshown that the longer storage time used does not influence theconcentrations of the volatile organic compounds(VOCs)ofinterest
12、in the samples,or that the data generated by analysis ofthe samples meet the data quality objectives(DQOs)(seePractice D5792).This practice does not use methanol preser-vation or other chemical preservatives in the field.1This practice is under the jurisdiction of ASTM Committee D34 on WasteManageme
13、nt and is the direct responsibility of Subcommittee D34.01.03 onSampling Equipment.Current edition approved June 1,2009.Published July 2009.Originally approvedin 1999 as D6418 99.Last previous edition approved in 2004 as D6418 04.DOI:10.1520/D6418-09.2En Core is a registered trademark of En Novative
14、 Technologies,Inc.,GreenBay,WI.The En Core sampler is covered by a patent.Interested parties are invitedto submit information regarding the identification of an alternative(s)to thispatented item to the ASTM Headquarters.Your comments will receive carefulconsideration at a meeting of the responsible
15、 technical committee,which you mayattend.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Hewitt,A.D.,Frozen Stora
16、ge of Soil Samples for Volatile Organic CompoundAnalysis,Environmental Testing and Analysis,Vol 8,No.5,1999,pp.1825.5A copy of the research report describing the study performed to evaluate theprecision of the En Core sampler to store low VOC concentrations is available fromASTM Headquarters.Request RR:D34-1014.6A copy of the research report describing the study performed to evaluate theperformance of the En Core sampler at 7 6 1C and 21 6 2C is available fromASTM Headquarters.Request RR:D34-101
