1、Designation:F134908(Reapproved 2019)Standard Test Method forNonvolatile Ultraviolet(UV)Absorbing Extractables fromMicrowave Susceptors1This standard is issued under the fixed designation F1349;the number immediately following the designation indicates the year oforiginal adoption or,in the case of r
2、evision,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 test method covers the determination of nonpolarand relatively polar ultraviolet(UV)absorbing comp
3、onentsthat may migrate from microwave susceptor packaging intofood simulants,such as corn oil and Miglyol 812.1.2 This test method has been collaboratively studied usingbilaminate susceptors constructed of paperboard,adhesive,anda layer of polyethylene terephthalate polymer(PETE)suscep-tor.Adhesive
4、and PETE related compounds were quantitatedusing this test method.1.3 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 th
5、eresponsibility 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.Specific warning statements are given in 4.3.2.3.1.5 This international standard was developed in accor-dance with
6、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:2F874
7、 Test Method for Temperature Measurement and Pro-filing for Microwave SusceptorsF1317 Test Method for Calibration of Microwave Ovens3.Apparatus and Reagents3.1 Microwave Oven,700 6 35 W,calibrated.Refer to TestMethod F1317.3.2 High-Pressure Liquid Chromatograph(HPLC),consist-ing of:3.2.1 Pump,capabl
8、e of 1.5 mL/min with flow precision62%.3.2.2 Injector,loop-type,equipped with 20-L loop.3.2.3 Guard Column,C8,5 m.3.2.4 Analytical Column,C8,5 m,250 by 4.6 mm.3.2.5 Detector-UV Absorbance,set for 254 nm.Adjustsensitivity to give a 70 to 100%of full scale peak for the 5-ppm dimethylterephthalate DMT
9、standard.3.2.6 Gradient Program,4 to 60%Mobile Phase B in 8min;60 to 70%B in 9 min;70 to 100%B in 7 min;100%Bfor 11 min;100 to 4%B in 5 min;4%B for minimum of 5min.Where Mobile Phase A(v/v)is 85+15+0.25%water:acetonitrile:acetic acid,and Mobile Phase B(v/v)is15+85%water:acetonitrile.3.2.7 Peak Area
10、Integration SystemInitialize data acqui-sition or integration system,or both,from 5 to 35 min duringthe separation.3.3 Hexane,LC/UV grade.3.4 Acetonitrile,LC/UV grade.3.5 Corn OilObtain corn oil that is as pure and fresh aspossible to minimize peaks in nonvolatiles extractables chro-matogram.Alterna
11、tively,Miglyol 812(a fractionated coconutoil)or synthetic fat simulant HB 307 can be used as a substitutefor corn oil.3.6 Dimethylacetamide(DMAC),LC/UV grade.3.7 Conical Bottom Test Tubes,50 mL,graduated.3.8 Bishydroxyethyleneterephthalate(BHET).3.9 Diethylterephthalate(DET).3.10 Dimethylterephthala
12、te(DMT).3.11 Fluoroptic Thermometry System.3.12 Temperature Probes,four,high temperature.1This test method is under the jurisdiction of ASTM Committee F02 on PrimaryBarrier Packaging and is the direct responsibility of Subcommittee F02.15 onChemical/Safety Properties.Current edition approved March 1
13、,2019.Published May 2019.Originallyapproved in 1991.Last previous edition approved in 2014 as F1349 08(2014).DOI:10.1520/F1349-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,
14、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 establishe
15、d 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 3.13 Glass Beads,3 to 4 mm,clean thoroughly by rinsingwith methylene chloride followed by soaking for 30 min ina
16、cetonitrile.Dry thoroughly before using.3.14 Recommended Microwave Nonvolatile ExtractionCellWaldorf Polytetrafluoroethylene cell.3(See Figs.1-3).This cell must be constructed by a machine shop experiencedin working with polytetrafluoroethylene(PTFE).After micro-waving oil in the cell,the cell should be rinsed with methylenechloride to remove residual oil and prevent carry-over.3.15 Solvent Concentration ApparatusKuderna-Danishevaporative concentrator,rotory evaporator;or Zymark Tur-boVap at a n
