1、Designation:D 5368 93(Reapproved 2001)Standard Test Methods forGravimetric Determination of Total Solvent ExtractableContent(TSEC)of Solid Waste Samples1This standard is issued under the fixed designation D 5368;the number immediately following the designation indicates the year oforiginal adoption
2、or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods describe standard procedures forgravimetrically determining the
3、total nonvolatile and semi-volatile organic content of solvent extracts from soils or solidwastes.The following methods are included:SectionMethod AMicro-Determination of TSEC11-13Method BEvaporating Dish Procedure14-16Method CBoiling Flask Procedure17-191.2 These methods are used after a solvent ex
4、tract isobtained from a soil or solid waste.For these methods to beapplicable,the extraction solvent must have a boiling point lessthan that of water at ambient pressure.1.3 The total solvent extractable content(TSEC)of a soil,sediment,sludge,or solid waste depends upon the solvent andmethod used fo
5、r the extraction procedure.2.Referenced Documents2.1 ASTM Standards:D 2109 Test Methods for Nonvolatile Matter in Haloge-nated Organic Solvents and Their Admixtures2D 2910 Practice for Concentration and Recovery of OrganicMatter from Water by Activated Carbon3D 3086 Test Method for Organochlorine Pe
6、sticides in Wa-ter3D 3445 Test Method for Nonvolatile Matter in Trichlorot-rifluoroethane4D 3694 Practices for Preparation of Sample Containers andfor Preservation of Organic Constituents3D 4281 Test Method for Oil and Grease(FluorocarbonExtractable Substances)by Gravimetric Determination3D 5369 Pra
7、ctice for the Extraction of Solid Waste Samplesfor Chemical Analysis Using Soxhlet Extraction53.Terminology3.1 Definition:3.1.1 total solvent extractable content(TSEC)the totalconcentration by weight(w/w)of organic materials that isextractable from a soil or solid waste by the selected solvent.4.Sum
8、mary of Methods4.1 The sample is extracted with an organic solvent using aprocedure such as described in Practices D 5369(SoxhletExtraction)or Test Method D 4281.The quantity of materialextracted into the solvent is determined as the residue weightafter solvent evaporation.Similar ASTM methods are T
9、estMethods D 2109 and D 3445,and Practice D 2910.4.1.1 Method A,Micro-Determination MethodThe resi-due weight after solvent evaporation is determined for 200 Lof solvent extract evaporated on an aluminum weighing dish.Aheat lamp is used to effect evaporation.4.1.2 Method B,Evaporating Dish Procedure
10、The residueweight after solvent evaporation is determined for 1.0 to 75.0mL of solvent extract.Solvent is evaporated in an evaporatingdish by heating at 5C below the solvent boiling point.Astream of nitrogen over the surface of the solvent is used toaccelerate evaporation.4.1.3 Method C,Boiling Flas
11、k MethodThe residue weightafter solvent evaporation is determined for 100 to 300 mL ofsolvent evaporated in a boiling flask.Solvent is evaporated ina water bath at the solvent boiling point.5.Significance and Use5.1 The TSEC provides a quantitative measure of the totalsolvent extractable organic con
12、tent of the solid waste inquestion.Based upon the TSEC,the extract may be analyzed orfurther processed(that is,further cleanup or solvent concen-tration)in preparation for analysis.Thus,the TSEC provides aquantitative measure for optimizing the extractable organicconcentration prior to chemical anal
13、ysis.5.2 The TSEC of soil or waste material may be used as aquantitative measure for the screening and selection of samplesfor chemical analysis.5.3 The TSEC may be useful as a simple and relativelyinexpensive quantitative indicator of changes occurring in thetotal extractable organic content of soi
14、l or waste materials.5.4 The detection limit of the TSEC depends upon thespecific procedures employed.Typical detection limits insolvent extracts(that is,without solvent pre-concentration)forMethod A are more than 1000 g/g.For Method B typical1These test methods are under the jurisdiction of ASTM Co
15、mmittee D34 onWaste Management and are the direct responsibility of Subcommittee D34.01.06 onAnalytical Methods.Current edition approved Feb.15,1993.Published April 1993.2Annual Book of ASTM Standards,Vol 15.05.3Annual Book of ASTM Standards,Vol 11.02.4Discontinued 1991;Replaced by Test Methods D 21
16、09,Annual Book of ASTMStandards,Vol 15.05.5Annual Book of ASTM Standards,Vol 11.04.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.detection limits are 20 to 100 g/g in the solvent extract.ForMethod C the typical detection limits are 3 to 20 g/g forsolutes in the solvent extract.5.5 The sensitivity of the methods can be adjusted byvarying the volume of solvent extract prior to gravimetricresidue determination.6.Interferences6.1 Solvents,reagents,glassware,and
