ASTM_D_7083_-_04_2010e1.pdf

Designation:D708304(Reapproved 2010)1Standard Practice forDetermination of Monomeric Plasticizers in Poly(VinylChloride)(PVC)by Gas Chromatography1This standard is issued under the fixed designation D7083;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.1NOTEReapproved with editorial changes in July 2010.1.Scope*1.1 This practice provides for the separation and identifica-tion of monomeric plasticizers in poly(vinyl chloride)(PVC)compounds by gas chromatography(GC).1.2 The text of this practice references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in Tables and Figures)shall not be consideredas requirements of this standard.1.3 Test Method D2124 is an alternative infrared procedure.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.NOTE1There is no known ISO equivalent to this standard.2.Referenced Documents2.1 ASTM Standards:2D883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2124 Test Method for Analysis of Components in Poly(Vi-nyl Chloride)Compounds Using an Infrared Spectropho-tometric TechniqueD3465 Test Method for Purity of Monomeric Plasticizers byGas ChromatographyE355 Practice for Gas Chromatography Terms and Relation-shipsE594 Practice for Testing Flame Ionization Detectors Usedin Gas or Supercritical Fluid ChromatographyIEEE/ASTM SI-10 Practice for Use of the InternationalSystem of Units(SI),the Modernized Metric System3.Terminology3.1 Definitions:3.1.1 For definition of plastic terms used in this standard,see Terminologies D883 and D1600.3.2 For units,symbols,and abbreviations used in thisstandard refer to Practices E594,E355,or IEEE/ASTM SI-10.3.3 Abbreviations:3.3.1 DOABis(2-ethylhexyl)adipate3.3.2 DBPDibutyl phthalate3.3.3 DOPBis(2-ethylhexyl)phthalate3.3.4 FTIRFourier Transform Infrared Spectroscopy3.3.5 GCGas Chromatography3.3.6 GC/MSGas Chromatography/Mass Spectrometry3.3.7 GPCGel Permeation Chromatography3.3.8 HPLCHigh Performance Liquid Chromatography3.3.9 PVCPoly(Vinyl Chloride)3.3.10 TCPTricresyl phosphate3.3.11 TOPTris(2-ethylhexyl)phosphate3.3.12 TOTMTrioctyl trimellitate4.Summary of Test Method4.1 A PVC sample is extracted in accordance with TestMethod D2124 and the extract residue is re-dissolved in asolvent.The resulting solution is then analyzed by GC todetermine the identity of each plasticizer component.Theplasticizer components are identified by retention time,orchromatographic fingerprint,or both.5.Significance and Use5.1 Separation and identification of plasticizer componentsin PVC is necessary to correlate performance properties withpolymer composition.This test method provides a means ofdetermining monomeric plasticizers including adipates,azelates,benzoates,citrates,phthalates,sebacates,and trimel-litates.1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.70 on Analytical Methods.Current edition approved July 1,2010.Published October 2010.Originallyapproved in 2004.Last previous edition approved in 2004 as D7083-04.DOI:10.1520/D7083-04R10E01.2For 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 5.2 Other methods successfully used to analyze plasticizersare column chromatography,HPLC,GPC,FTIR,and GC/MS.5.3 This method is not applicable to plasticizers withmolecular weights over 700 g/mol including epoxidized soy-bean oil and polymeric plasticizers.6.Interferences6.1 Retention times for GC are dependent on several vari-ables and it is quite possible to have two or more componentswith identical retention times.The GC operator should take thenecessary steps to insure that adequate separation of theplasticizer components is achieved.6.2 A source of interference can be from solvent impurities.Run a solvent blank prior to analysis of an extract.7.Apparatus7.1 Gas chromatograph equipped with a flame ionizationdetector and capable of operating in the 250 to 350C range.7.2 A capillary or packed gas chromatographic columncapable of operating in the 250 to 350C range such