1、Designation:D562794(Reapproved 2009)1Standard Test Method forWater Extractable Residue from Particulate Ion-ExchangeResins1This standard is issued under the fixed designation D5627;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the
2、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.1NOTEAdded research report information to Section 13 editorially in November 2010.1.Scope1.1 This test method covers the measu
3、rement of watersoluble extractable residue from particulate ion-exchange res-ins based on elevated temperature extraction and gravimetricdetermination of residue.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standa
4、rd 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.2.Referenced Documents2.1 ASTM St
5、andards:2D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD2187 Test Methods for Physical and Chemical Propertiesof Particulate Ion-Exchange ResinsD2687 Practices for Sampling Particulate Ion-Exchange Ma-terialsD2777 Practice for Determination of Precision and Bias ofApplicabl
6、e Test Methods of Committee D19 on Water3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology D1129.4.Summary of Test Method4.1 A sample of particulate ion exchange material is con-tacted with water at an elevated temperature.After a specifiedcontact time,
7、the concentration of soluble material in theaqueous phase is measured gravimetrically after filtration.5.Significance and Use5.1 The presence of water extractables in ion-exchangeresins can cause fouling of other materials downstream andcontamination of process water.The quantity of water extract-ab
8、les is sometimes used as a specification to indicate resinquality,and typical values are 0.01 to 0.1%.5.2 It is recognized that this test method may not remove allpotential sloughage products and does not measure volatilecompounds.More extensive extraction and identification ofcompounds may be neede
9、d in specific cases.6.Interferences6.1 The hygroscopic nature of some extracted compoundscan make it difficult to obtain a constant weight.Otherextraction times and temperatures may give results that are notcomparable to these.7.Apparatus7.1 Funnel,60 mL with coarse frit.7.2 Filtration assembly.7.3
10、Glass fiber filters,without binder,pre-rinsed with wa-ter.37.4 Weighing vesselPlatinum,nickel,or aluminum may beused so long as there is no attack by the sample and constantweight can be achieved.7.5 Water bath,for use at 60 6 1C.8.Reagents8.1 Purity of ReagentsReagent grade chemicals shall beused i
11、n all tests.Unless otherwise indicated,it is intended thatall reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Society,1This test method is under the jurisdiction of ASTM Committee D19 on Waterand is the direct responsibility of Subcommit
12、tee D19.08 on Membranes and IonExchange Materials.Current edition approved May 1,2009.Published June 2009.Originallyapproved in 1994.Last previous edition approved in 2004 as D5627 94(2004).DOI:10.1520/D5627-94R09E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM C
13、ustomer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Gelman Type A/E,Millipore Type AP40,Whatman GF/C,or equivalent,havebeen found suitable for this purpose.Copyright ASTM International,100 Barr Harbor
14、 Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 where such specifications are available.4Other grades may beused,provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.8.2 Purity of WaterU
15、nless otherwise indicated,referencesto water shall be understood to mean reagent water conformingto Specification D1193,Type I or lI.9.Sampling9.1 Collect the sample in accordance with Practices D2687.In-service resins are taken after regeneration and rinse.10.Procedure10.1 Drain the sample,if neces
16、sary,with the drainingapparatus described in the draining apparatus section of TestMethods D2187 to remove free water.Do not wash.10.2 Weigh(to the nearest 0.1 g)two 50-g portions of thedrained sample into clean,dry,250-mL Erlenmeyer flasks(with stoppers)or BOD bottles.Also weigh(to the nearest 5mg)a 5-g portion of the drained sample for percent waterretention capacity according to Test Methods D2187,TestMethod B.10.3 Transfer 200 mL of water by graduate to each of thetwo flasks containing sampl
