1、Designation:D262210Standard Test Method forSulfur in Petroleum Products by Wavelength DispersiveX-ray Fluorescence Spectrometry1This standard is issued under the fixed designation D2622;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers
3、the determination of total sulfurin petroleum and petroleum products that are single-phase andeither liquid at ambient conditions,liquefiable with moderateheat,or soluble in hydrocarbon solvents.These materials caninclude diesel fuel,jet fuel,kerosene,other distillate oil,naphtha,residual oil,lubric
4、ating base oil,hydraulic oil,crudeoil,unleaded gasoline,gasohol and biodiesel.1.2 The range of this test method is between the PLOQvalue(calculated by procedures consistent with PracticeD6259)of 3 mg/kg total sulfur and the highest level sample inthe round robin,4.6 wt.%total sulfur.NOTE1Instrumenta
5、tion covered by this test method can vary insensitivity.The applicability of the test method at sulfur concentrationsbelow 3 mg/kg may be determined on an individual basis for WDXRFinstruments capable of measuring lower levels,but precision in this testmethod does not apply.1.2.1 The values of the l
6、imit of quantitation(LOQ)andmethod precision for a specific laboratorys instrument dependson instrument source power(low or high power),sample type,and the practices established by the laboratory to perform themethod.1.3 Samples containing more than 4.6 mass%sulfur shouldbe diluted to bring the sulf
7、ur concentration of the dilutedmaterial within the scope of this test method.Samples that arediluted can have higher errors than indicated in Section 14 thannon-diluted samples.1.4 Volatile samples(such as high vapor pressure gasolinesor light hydrocarbons)may not meet the stated precisionbecause of
8、 selective loss of light materials during the analysis.1.5 Afundamental assumption in this test method is that thestandard and sample matrices are well matched,or that thematrix differences are accounted for(see 12.2).Matrix mis-match can be caused by C/H ratio differences between samplesand standar
9、ds or by the presence of other interfering heteroa-toms or species(see Table 1).1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with it
10、s 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.2.Referenced Documents2.1 ASTM Standards:2D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD417
11、7 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD4294 Test Method for Sulfur in Petroleum and PetroleumProducts by Energy Dispersive X-ray Fluorescence Spec-trometryD4927 Test Methods for Elemental Analysis of LubricantandAdditiveComponentsBarium,Calcium,Phosphorus,Sulfur,and Zin
12、c by Wavelength-DispersiveX-Ray Fluorescence SpectroscopyD6259 Practice for Determination of a Pooled Limit ofQuantitationD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD7343 Practice for Optimization,Sampl
13、e Handling,Calibration,and Validation of X-ray Fluorescence Spec-trometry Methods for Elemental Analysis of PetroleumProducts and LubricantsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications1This test method is under the jurisdiction of ASTM Committee
14、D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.03 on Elemental Analysis.Current edition approved Feb.15,2010.Published March 2010.Originallyapproved in 1967.Last previous edition approved in 2008 as D262208.DOI:10.1520/D2622-10.2For reference
15、d 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM
16、International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.Summary of Test Method3.1 The sample is placed in the X-ray beam,and the peakintensity of the sulfur K line at 0.5373 nm is measured.Thebackground intensity,measured at a recommended wavelengthof 0.5190 nm(0.5437 nm for a Rh target tube)is subtractedfrom the peak intensity.The resultant net counting rate is thencompared to a previously prepared calibration curve or equa-tion to obtain the concentrati
