ASTM_D_5184_-_12.pdf

Designation:D518412Standard Test Methods forDetermination of Aluminum and Silicon in Fuel Oils byAshing,Fusion,Inductively Coupled Plasma AtomicEmission Spectrometry,and Atomic AbsorptionSpectrometry1This standard is issued under the fixed designation D5184;the number immediately following 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.Scope*1.1 These test methods cover the determination of alumi-num and silicon in fuel oils at concentrations between 5 and150 mg/kg for aluminum and 10 and 250 mg/kg for silicon.1.2 Test Method AInductively coupled plasma atomicemission spectrometry is used in this test method to quantita-tively determine aluminum and silicon.1.3 Test Method BFlame atomic absorption spectrometryis used in this test method to quantitatively determine alumi-num and silicon.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 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 limitations prior to use.Specific warningstatements are given in Sections 7.6,10.1,and 11.5.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD6792 Practice for Quality System in Petroleum Productsand Lubricants Testing LaboratoriesD7260 Practice for Optimization,Calibration,and Valida-tion of Inductively Coupled Plasma-Atomic EmissionSpectrometry(ICP-AES)for Elemental Analysis of Petro-leum Products and LubricantsD7740 Practice for Optimization,Calibration,and Valida-tion of Atomic Absorption Spectrometry for Metal Analy-sis of Petroleum Products and LubricantsE135 Terminology Relating to Analytical Chemistry forMetals,Ores,and Related Materials3.Terminology3.1 Definitions:3.1.1 emission spectroscopy,nRefer to TerminologyE135.3.2 Definitions of Terms Specific to This Standard:3.2.1 calibration,nthe process by which the relationshipbetween signal intensity and elemental concentration is deter-mined for a specific element analysis.3.2.2 check standard,nin calibration,an artifact measuredperiodically,the results of which typically are plotted on acontrol chart to evaluate the measurement process.4.Summary of Test Methods4.1 A weighed quantity of homogenized sample is heated ina clean platinum dish,the combustible material is removed byburning and the carbon finally removed by heating in a mufflefurnace at a temperature of 550 6 25C.The residue is fusedwith a lithium tetraborate/lithium fluoride flux.The fusedmixture is digested in a solution of tartaric acid and hydrochlo-ric acid and diluted to volume with water.The resultingsolution is aspirated into an inductively-coupled plasma andthe emission intensities of aluminum and silicon lines aremeasured.Standard calibration solutions are also aspirated andaluminum and silicon intensities are measured for comparison.1These test methods are under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and are the direct responsibility of Subcommit-tee D02.03 on Elemental Analysis.Current edition approved June 1,2012.Published August 2012.Originallyapproved in 1991.Last previous edition approved in 2006 as D5184 01(2006).DOI:10.1520/D5184-12.2For 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 ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Alternatively,the resulting solution is aspirated into the flameof an atomic absorption spectrometer and the absorptions of theresonance radiation of aluminum and silicon are measured.Standard calibration solutions are also aspirated and aluminumand silicon absorption intensities are measured for comparison.4.2 Information on proper protocols for conducting atomicabsorption spectrometry can be found in Practice D7740.4.3 Information on Proper protocols for conducting induc-tively coupled plasma-atomic absorption spectrometry can befound in Practice D7260.5.Significance and Use5.1 Catalyst fines in fuel oils can cause abnormal enginewear.These test methods provide a means of determiningsilicon and aluminum,the major constituents of the cat