1、Designation:D787613Standard Practice forPractice for Sample Decomposition Using MicrowaveHeating(With or Without Prior Ashing)for AtomicSpectroscopic Elemental Determination in PetroleumProducts and Lubricants1This standard is issued under the fixed designation D7876;the number immediately following
2、 the designation indicates the year oforiginal 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.Scope1.1 This practice covers the pro
3、cedure for use of microwaveradiation for sample decomposition prior to elemental deter-mination by atomic spectroscopy.1.1.1 Although this practice is based on the use of induc-tively coupled plasma atomic emission spectrometry(ICP-AES)and atomic absorption spectrometry(AAS)as theprimary measurement
4、 techniques,other atomic spectrometrictechniques may be used if lower detection limits are requiredand the analytical performance criteria are achieved.1.2 This practice is applicable to both petroleum productsand lubricants such as greases,additives,lubricating oils,gasolines,and diesels.1.3 Althou
5、gh not a part of Committee D02s jurisdiction,this practice is also applicable to other fossil fuel products suchas coal,fly ash,coal ash,coke,and oil shale.1.3.1 Some examples of actual use of microwave heating forelemental analysis of fossil fuel products and other materialsare given in Table 1.1.3
6、.2 Some additional examples of ASTM methods formicrowave assisted analysis in the non-fossil fuels area areincluded in Appendix X1.1.4 During the sample dissolution,the samples may bedecomposed with a variety of acid mixture(s).It is beyond thescope of this practice to specify appropriate acid mixtu
7、res forall possible combinations of elements present in all types ofsamples.But if the dissolution results in any visible insolublematerial,this practice may not be applicable for the type ofsample being analyzed,assuming the insoluble material con-tains some of the analytes of interest.1.5 It is po
8、ssible that this microwave-assisted decomposi-tion procedure may lead to a loss of“volatile”elements such asarsenic,boron,chromium,mercury,antimony,selenium,and/or tin from the samples.Chemical species of the elementsis also a concern in such dissolutions since some species maynot be digested and ha
9、ve a different sample introductionefficiency.1.6 A reference material or suitable NIST Standard Refer-ence Material should be used to confirm the recovery ofanalytes.If these are not available,the sample should be spikedwith a known concentration of analyte prior to microwavedigestion.1.7 Additional
10、 information on sample preparation proce-dures for elemental analysis of petroleum products and lubri-cants can be found in Practice D7455.1.8 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.9 This standard does not purport to
11、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 limitations prior to use.Specific warningstatements are given in Sections 6 and 7
12、.2.Referenced Documents2.1 ASTM Standards:2C1234 Practice for Preparation of Oils and Oily WasteSamples by High-Pressure,High-Temperature Digestionfor Trace Element DeterminationsC1347 Practice for Preparation and Dissolution of UraniumMaterials for AnalysisC1463 Practices for Dissolving Glass Conta
13、ining Radioac-tive and Mixed Waste for Chemical and RadiochemicalAnalysisD482 Test Method for Ash from Petroleum Products1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.03 onElemental Analysis.Cur
14、rent edition approved June 15,2013.Published August 2013.DOI:10.1520/D7876-13.2For 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 A
15、STM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D874 Test Method for Sulfated Ash from Lubricating Oilsand AdditivesD1193 Specification for Reagent WaterD1506 Test Methods for Carbon BlackAsh ContentD2216 Test Methods for Labo
16、ratory Determination of Water(Moisture)Content of Soil and Rock by MassD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD4309 Practice for Sample Digestion Using Closed VesselMicrowave Heating Technique for the Determination ofTotal Metals in WaterD4628 Test Method for Analysis of Barium,Calcium,Magnesium,and Zinc in Unused Lubricating Oils byAtomic Absorption SpectrometryD4643 Test Method for Determinati
