1、Designation:D651700(Reapproved 2012)1Standard Guide forField Preservation of Groundwater Samples1This standard is issued under the fixed designation D6517;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A nu
2、mber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorial changes were made throughout in May 2012.1.Scope1.1 This guide covers methods for field preservation ofgroundwater samples.Laboratory pre
3、servation methods are notdescribed in this guide.1.2 This standard may involve hazardous materials,operations,and equipment.This standard does not purport toaddress all of the safety concerns,if any,associated with itsuse.It is the responsibility of the user of this standard toestablish appropriate
4、safety and health practices and deter-mine the applicability of regulatory limitations prior to use.1.3 This guide offers an organized collection of informationor a series of options and does not recommend a specificcourse of action.This document cannot replace education orexperience and should be u
5、sed in conjunction with professionaljudgment.Not all aspects of this guide may be applicable in allcircumstances.This ASTM standard is not intended to repre-sent or replace the standard of care by which the adequacy ofa given professional service must be judged,nor should thisdocument be applied wit
6、hout consideration of a projects manyunique aspects.The word“Standard”in the title of thisdocument means only that the document has been approvedthrough the ASTM consensus process.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD3694 Practices for
7、Preparation of Sample Containers andfor Preservation of Organic ConstituentsD5903 Guide for Planning and Preparing for a GroundwaterSampling EventD6089 Guide for Documenting a Ground-Water SamplingEvent2.2 Other Documents:Standard Methods for the Examination of Water andWastewater,20th ed.,19993Inte
8、rnational Air Transport Association Dangerous GoodsRegulations4U.S.EPA,Office of Solid Waste,SW-846,3rd ed.U.S.EPA,Title 40,Code of Federal Regulations,Part 136U.S.DOT,Title 49,Code of Federal Regulations,Part 1723.Terminology3.1 Definitions:For definitions of common technical termsin this standard,
9、refer to Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.2.1 chemical preservationthe addition of acidic,alkalineor biologically toxic compounds,or combination thereof,to agroundwater sample to prevent changes in chemical propertiesof the sample that may occur after collection.
10、3.2.2 holding timethe maximum amount of time that maytranspire from the moment a sample container is filled to thetime the sample is extracted or analyzed.Holding times areparameter-specific,variable in length,and defined by labora-tory analytical methods.3.2.3 physical preservationmethods that are
11、implementedto protect the physical integrity of a groundwater sample fromthe time the sample is collected until the sample is analyzed.3.2.4 temperature blanka quality control sample that istransported with samples and is used by the laboratory per-forming sample analyses to verify that temperature-
12、sensitivesamples have been adequately cooled to 4C for shipment toand arrival at the laboratory(see Note 1).NOTE1Forms of temperature blank include:(1)using a commerciallyprepared,fluid-filled bottle containing a permanently fixed NationalInstitute of Standards and Technology(NIST)-certified(or NIST
13、-traceable)thermometer,the temperature of which is read directly by the laboratory;(2)submission of a designated sample container filled with water(forexample,groundwater,distilled water,or deionized water)that is openedby the laboratory and immediately measured for temperature of the water1This gui
14、de is under the jurisdiction ofASTM Committee D18 on Soil and Rockand is the direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone InvestigationsCurrent edition approved May 15,2012.Published December 2012.Originallyapproved in 2000.Last previous edition approved in 2005 as D651
15、7 00(2005).DOI:10.1520/D6517-00R12E1.2For 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.3Available from American Nati
16、onal Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.4Available from the Superintendent of Documents,US Government PrintingOffice,Washington,DC 20402.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 using a National Institute of Standards and Technology-certified(orNIST-traceable)thermometer;or(3)submission of a designated containerfilled with water(for example,groundwater,distilled water,or deionizedwater)on which
