1、Designation:D218794(Reapproved 2009)1Standard Test Methods forPhysical and Chemical Properties of Particulate Ion-Exchange Resins1This standard is issued under the fixed designation D2187;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revisi
2、on,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.1NOTEA typo was editorially corrected in Section 47.7 in March 2010.1.Scope1.1 These test methods cover the determinati
3、on of thephysical and chemical properties of ion-exchange resins whenused for the treatment of water.They are intended for use intesting both new and used materials.The following thirteen testmethods are included:SectionsTest Method APretreatment6 10Test Method BWater Retention Capacity11 17Test Met
4、hod CBackwashed and Settled Density18 24Test Method DParticle Size Distribution25 32Test Method ESalt-Splitting Capacity of Cation-Exchange Resins33 41Test Method FTotal Capacity of Cation-ExchangeResins42 50Test Method GPercent Regeneration of Hydrogen-Form Cation-Exchange Resins51 58Test Method HT
5、otal and Salt-Splitting Capacity ofAnion-Exchange Resins59 66Test Method IPercent Regeneration of AnionExchange Resins67 75Test Method JIonic Chloride Content of Anion-Exchange Resins76 83Test Method KCarbonate Content of Anion-Exchange Resins84 91Test Method LSulfate Content of Anion ExchangeResins
6、92 99Test Method MTotal Anion Capacity of Anion-Exchange Resins100 1081.2 The values stated in SI units are to be regarded as thestandard.The inch-pound units given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with i
7、ts 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 precau-tionary statements are given in Section 10.8.2.Referenced Documents2.1 ASTM Standards:2D1129 Termi
8、nology Relating to WaterD1193 Specification for Reagent WaterD1293 Test Methods for pH of WaterD2687 Practices for Sampling Particulate Ion-Exchange Ma-terialsD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterE11 Specification for Woven Wire Te
9、st Sieve Cloth and TestSieves3.Terminology3.1 DefenitionsFor definitions of terms used in these testmethods refer to Terminology D1129.3.2 Definitions of Terms Specific to This Standard:3.2.1 anion-exchange materialan ion-exchange materialcapable of the reversible exchange of negatively charged ions
10、.3.2.2 cation-exchange materialan ion-exchange materialcapable of the reversible exchange of positively charged ions.3.2.3 ion-exchange resina synthetic organic ion-exchangematerial.3.2.4 mixed beda physical mixture of anion-exchangematerial and cation-exchange material.4.Reagents4.1 Purity of Reage
11、ntsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended that1These test methods are under the jurisdiction of ASTM Committee D19 onWater and are the direct responsibility of Subcommittee D19.08 on Membranes andIon Exchange Materials.Current edition approved May
12、 1,2009.Published June 2009.Originallyapproved in 1963.Last previous edition approved in 2004 as D2187 94(2004).DOI:10.1520/D2187-94R09E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume inf
13、ormation,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 States1 all reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical So
14、ciety,where such specifications are available.3Other 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.4.2 Purity of WaterUnless otherwise indicated,referencesto water shall be unders
15、tood to mean Type IV reagent waterdescribed in Specification D1193.5.Sampling5.1 Obtain a representative sample of the ion-exchangeresin in accordance with Practices D2687.5.2 A minimum sample size of 1 L is recommended for acomplete testing program.TEST METHOD APRETREATMENT6.Scope6.1 This test meth
16、od covers the conversion of ion-exchangeresins to a known ionic form and is intended for application toboth new and used material.7.Significance and Use7.1 The ionic form of an ion-exchange material affects bothits equivalent mass and its equilibrium water content.These inturn influence the numerical values obtained in exchangecapacity determinations,in density measurements,and in thesize of the particles.To provide a uniform basis forcomparison,therefore,the sample should be converted to aknown