1、Designation:D745814Standard Test Method forDetermination of Beryllium in Soil,Rock,Sediment,and FlyAsh Using Ammonium Bifluoride Extraction andFluorescence Detection1This standard is issued under the fixed designation D7458;the number immediately following the designation indicates the year oforigin
2、al adoption or,in the case of 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.Scope*1.1 This test method is intended for use in the determinationof beryllium i
3、n samples of soil,rock,sediment,and fly ash.This test method can be used for purposes such as environ-mental remediation projects where beryllium is a contaminantof concern.It is also useful for characterization of levels ofberyllium in soil at sites where beryllium is in mining ormanufacturing appl
4、ications,and for determination of back-ground levels of beryllium in soil.1.2 This test method assumes that samples of soil,rock,sediment,or fly ash are collected using appropriate andapplicable ASTM International standard practices.1.3 This test method includes a procedure for extraction(dissolutio
5、n)of beryllium in dilute ammonium bifluoride,followed by analysis of aliquots of the extract solution using aberyllium-specific fluorescent dye.1.4 No detailed operating instructions are provided becauseof differences among various makes and models of suitablefluorometric instruments.Instead,the ana
6、lyst shall follow theinstructions provided by the manufacturer of the particularinstrument.This test method does not address comparativeaccuracy of different devices or the precision between instru-ments of the same make and model.1.5 The values stated in SI units are to be regarded asstandard.No ot
7、her units of measurement are included in thisstandard.1.6 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.6.1 The procedures used to specify how data are collected/recorded,or calculated,in this standard are regarde
8、d as theindustry standard.In addition,they are representative of thesignificant digits that generally should be retained.The proce-dures used do not consider material variation,purpose forobtaining the data,special purpose studies,or any consider-ations for the users objectives;and it is common prac
9、tice toincrease or reduce significant digits of reported data to becommensurate with these considerations.It is beyond the scopeof this standard to consider significant digits used in analyticalmethods for engineering design.1.7 This test method contains notes that are explanatory andnot part of man
10、datory requirements of the standard.1.8 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-bility of regulatory limitat
11、ions prior to use.Specific hazardsassociated with performance of this test method are describedin Section 9.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD1193 Specification for Reagent WaterD3740 Practice for Minimum Requirements for AgenciesEng
12、aged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4840 Guide for Sample Chain-of-Custody ProceduresD5730 Guide for Site Characterization for EnvironmentalPurposes With Emphasis on Soil,Rock,the Vadose Zoneand Groundwater(Withdrawn 2013)3D6026 Practice f
13、or Using Significant Digits in GeotechnicalDataD7202 Test Method for Determination of Beryllium in theWorkplace by Extraction and Optical Fluorescence Detec-tion1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.01 on
14、 Surface andSubsurface Characterization.Current edition approved May 1,2014.Published June 2014.Originallyapproved in 2008.Last previous edition approved in 2008 as D7458-08.DOI:10.1520/D7458-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at ser
15、viceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM Interna
16、tional,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 E177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE882 Guide for Accountability and Quality Control in theChemical Analysis Laboratory2.2 Other Standards:ISO 594-2 Conical Fittings with a 6%(Luer)Taper forSyringes,NeedlesandCertainOtherMedicalEquipmentPart 2:Lock FittingsEN ISO 8655-2 Piston-
