1、Designation:E186810(Reapproved 2015)Standard Test Methods forLoss-On-Drying by Thermogravimetry1This standard is issued under the fixed designation E1868;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A num
2、ber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods describe a procedure for determiningthe amount of volatile matter of any kind that is driven off froma test specimen under
3、a specific set of temperature and timeconditions.These test methods determine only the mass ofmaterial lost,not its identity.1.2 These test methods are applicable to a wide variety ofsolid or liquid materials,mixtures,or blends where the majorcomponent is stable at the test temperature.NOTE1These te
4、st methods can be applied to the analysis of volatileorganic compounds(VOC)content in metalworking fluids and directcontact lubricants subject to South CoastAir Quality Management District(SCAQMD)Rule 1144.1.3 The applicable temperature range for these test methodsare generally between ambient tempe
5、rature and 1000C.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 There is no ISO method equivalent to this test standard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its u
6、se.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D6 Test Method for Loss on Heating of Oil and AsphalticCompoundsD1475 Test M
7、ethod For Density of Liquid Coatings,Inks,and Related ProductsD1509 Test Methods for Carbon BlackHeating LossD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by MassD2288 Test Method for Weight Loss of Plasticizers onHeating(Withdrawn 2010)3D2595 Test Method
8、 for Evaporation Loss of LubricatingGreases Over Wide-Temperature RangeD2832 Guide for Determining Volatile and Nonvolatile Con-tent of Paint and Related CoatingsD3175 Test Method for Volatile Matter in the AnalysisSample of Coal and CokeD4017 Test Method for Water in Paints and Paint Materialsby Ka
9、rl Fischer MethodD4893 Test Method for Determination of Pitch VolatilityE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE359 Test Methods for Analysis of Soda Ash(SodiumCarbonate)E473 Terminology Relating to Thermal Analysis and Rhe-ologyE691 Practice for Conducting an Inter
10、laboratory Study toDetermine the Precision of a Test MethodE897 Test Method for Volatile Matter in theAnalysis Sampleof Refuse-Derived Fuel(Withdrawn 2011)3E1142 Terminology Relating to Thermophysical PropertiesE1582 Practice for Calibration of Temperature Scale forThermogravimetryE1860 Test Method
11、for Elapsed Time Calibration of Ther-mal AnalyzersE2040 Test Method for Mass Scale Calibration of Thermo-gravimetric Analyzers2.2 SCAQMD Documents:4Rule 1144 Metalworking Fluids and Direct-Contact Lubri-cants3.Terminology3.1 Definitions:3.1.1 Specific technical terms used in this test method aredefi
12、ned in Terminology E473 and Terminology E1142,includ-ingthermogravimetry,thermogravimetricanalyzer,repeatability,and reproducibility.1These test methods are under the jurisdiction of ASTM Committee E37 onThermal Measurements and is the direct responsibility of Subcommittee E37.01 onCalorimetry and M
13、ass Loss.Current edition approved May 1,2015.Published May 2015.Originallyapproved in 1997.Last previous edition approved in 2010 as E1868 10.DOI:10.1520/E1868-10R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer service at serviceastm.org.For Annual Book
14、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.4Available from South Coast Air Quality Management District(SCAQMD),21865 Copley Drive,Diamond Bar,CA,91765,http:/aq
15、md.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Summary of Test Method4.1 A specimen of known mass is heated at a constanttemperature while its mass is continuously measured as afunction of time.At the end of a pre-determined tim
16、e interval,or when the loss reaches a pre-determined rate,the mass loss ofthe specimen is recorded as a percent of the original mass.Thisvalue is identified as the loss-on-drying(LOD)value.TheLOD value is a function of both temperature and time.Therefore these values must be identified and reported.Atypical LOD value is reported as LOD=XX%(60 min at120C).The volatile content,V(g/L),or VOC content,VOC(g/L),may be calculated.NOTE2For SCAQMD Rule 1144 purposes,at the end of a pre-determined time in
