1、Designation:D508521Standard Test Method forDetermination of Chloride,Nitrate,and Sulfate inAtmospheric Wet Deposition by Suppressed IonChromatography1This standard is issued under the fixed designation D5085;the number immediately following the designation indicates the year oforiginal adoption or,i
2、n 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.1.Scope1.1 This test method is applicable to the determination ofchloride,nitrate,and sulfate in at
3、mospheric wet depositionsamples(rain,snow,sleet,and hail)by suppressed ion chro-matography.For additional applications,see to Test MethodD4327.1.2 The concentration ranges for this test method are aslisted below.The range tested was confirmed using theinterlaboratory collaborative test(see Table 1 f
4、or statisticalsummary of the collaborative test).MethodDetectionL(mg/L)(1)Range ofMethod(mg/L)RangeTested(mg/L)Chloride0.030.092.00.151.36Nitrate0.030.095.00.154.92Sulfate0.030.098.00.156.521.3 The method detection limit(MDL)is based on singleoperator precision(1)2and may be higher or lower for othe
5、roperators and laboratories.The precision and bias data pre-sented are insufficient to justify use at this low level;however,it has been reported that this test method is reliable at lowerlevels than those that were tested.The MDLs listed above weredetermined following the guidance in 40 CFR Part 13
6、6Appendix B.Other approaches to the determination of MDLsmay yield different MDLs.1.4 Method Detection Limits will vary depending on thetype and length of column(s)used,the composition andstrength of eluent used,the bore size of the instrumentation(that is,microbore or standard bore),eluent flow rat
7、e and othervariables between instruments.The method detection limitslisted above are those used in determining the Precision andBias of this method as given in Table 1.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of th
8、e 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 precautionary statements are given in Section 9.1.6 This international standard was developed in accor-dance with international
9、ly 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:3D883 Terminology
10、Relating to PlasticsD1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD1356 Terminology Relating to Sampling and Analysis ofAtmospheresD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD3670 Guide for Determination of Prec
11、ision and Bias ofMethods of Committee D22D4210 Practice for Intralaboratory Quality Control Proce-dures and a Discussion on Reporting Low-Level Data(Withdrawn 2002)4D4327 Test Method for Anions in Water by Suppressed IonChromatographyD5012 Practice for Preparation of Materials Used for theCollection
12、 and Preservation of Atmospheric Wet Deposi-tionE694 Specification for Laboratory Glass Volumetric Appa-ratus1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Subcommittee D22.03 on AmbientAtmospheres and Source Emissions.Current edit
13、ion approved Sept.1,2021.Published April 2022.Originallyapproved in 1990.Last previous edition approved in 2013 as D5085 02(2013).DOI:10.1520/D5085-21.2The boldface numbers in parentheses refer to references at the end of this testmethod.3For referenced ASTM standards,visit the ASTM website,www.astm
14、.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.4The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor
15、 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 iss
16、ued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1E1154 Specification for Piston or Plunger Operated Volu-metric ApparatusIEEE/ASTM SI-10 Standard for Use of the InternationalSystem of Units(SI):The Modern Metric System2.2 Other Documents:40 CFR 136 Appendix B Definition and Procedure for theDetermination of the Method Detection Limit53.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminologies D883,D1129,and D1356 andTest Metho