ASTM_D_4075_-_06_2021.pdf

Designation:D407506(Reapproved 2021)Standard Test Methods forRubber Compounding MaterialsFlame Atomic AbsorptionAnalysisDetermination of Metals1This standard is issued under the fixed designation D4075;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 These test methods cover the determination of metals inrubber compounding materials by flame atomic absorption.1.2 The test methods include the following materials:SectionsZinc oxide11 201.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.(For a specific warning statement,see 6.1.)1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4004 Test Methods for RubberDetermination of MetalContent by Flame Atomic Absorption(AAS)AnalysisD4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesE300 Practice for Sampling Industrial Chemicals2.2 Other Documents:2.2.1 Literature pertinent to the particular atomic absorptionspectrophotometric equipment used for the analysis espe-cially the manufacturers recommendations for optimumperformance.Standard texts on atomic absorption byflame technique are also helpful.3.Summary of Test Methods3.1 The compounding material is suitably sampled,pre-pared according to the appropriate sections of these testmethods,and examined by flame absorption spectrophotom-etry for metals.3.2 Sample preparation,procedures,calculations,and pre-cision statements will be found in each section dealing with aparticular compounding material.3.3 The analysis of metals in compounding materials de-pends on the skill of the operator in the use of the flame atomicabsorption equipment.It is,therefore,assumed that the opera-tor is familiar with all aspects of this analytical technique.Nodetails are given here for the proper operation of the equipmentor interpretation of results obtained.3.4 These test methods do not cover the determination ofmetals in raw rubbers or finished products.See Test MethodsD4004 for these methods.4.Significance and Use4.1 These test methods are suitable for process control,forproduct acceptance,and for research and development.5.Apparatus5.1 Balances,capable of weighing accurately to 60.1 mg or60.1 g,depending on sample mass required.5.2 Hot Plate.5.3 Common Borosilicate Glassware,especially 10,100,200 and 500-cm3volumetric flasks.5.4 Pipets,of 1,2,5,and 10-cm3capacity.One cubiccentimetre pipets graduated in tenths and hundredths areespecially useful.1These test methods are under the jurisdiction of ASTM Committee D11 onRubber and Rubber-like Materials and are the direct responsibility of SubcommitteeD11.11 on Chemical Analysis.Current edition approved Nov.1,2021.Published December 2021.Originallyapproved in 1981.Last previous edition approved in 2017 as D4075 06(2017).DOI:10.1520/D4075-06R21.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1?5.5 Microlitre Syringes,1 and 10 mm3(L)are recom-mended.5.6 Plastic Bottles,suitable for storage of standard solu-tions.5.7 Atomic Absorption Spectrophotometer,operating in theflame mode.The instrument must be operated according to themanufacturers directions for optimum performance for flameoperation.6.Reagents6.1 Standard solution for metals to be determined in eachcompounding material may be prepared from pure metals,metallic compounds,or purchased from a chemical supplyhouse as standard solutions.The usual concentrations ofsolutions is 1000