1、Designation:D114198(Reapproved 2021)Standard Practice forPreparation of Substitute Ocean Water1This standard is issued under the fixed designation D1141;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numb
2、er in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This practice covers the preparation of solutions con-tain
3、ing inorganic salts in proportions and concentrations rep-resentative of ocean water.2NOTE1Since the concentrations of ocean water varies with samplinglocation,the gross concentration employed herein is an average of manyreliable individual analyses.Trace elements,occurring naturally in con-centrati
4、ons below 0.005 mg/L,are not included.1.2 This practice provides three stock solutions,each rela-tively concentrated but stable in storage.For preparation ofsubstitute ocean water,aliquots of the first two stock solutionswith added salt are combined in larger volume.An addedrefinement in adjustment
5、of heavy metal concentration isprovided by the addition of a small aliquot of the third stocksolution to the previous solution.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
6、of thesafety concerns,if any,associated with its use.It is theresponsibility 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.1.5 This international standard was developed in accor
7、-dance with 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 Sta
8、ndards:3D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterE200 Practice for Preparation,Standardization,and Storageof Standard and Reagent Solutions for Chemical Analysis3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminology D1129.
9、3.2 Definitions of Terms Specific to This Standard:3.2.1 chlorinity,nthe weight of silver ion(g)required tocompletely precipitate the halides in 0.3285 kg of water(g/kg).4.Significance and Use4.1 This substitute ocean water may be used for laboratorytesting where a reproducible solution simulating s
10、ea water isrequired.Examples are for tests on oil contamination,deter-gency evaluation,and corrosion testing.NOTE2The lack of organic matter,suspended matter,and marine lifein this solution does not permit unqualified acceptance of test results asrepresenting performance in actual ocean water.Where
11、corrosion isinvolved,the results obtained from laboratory tests may not approximatethose secured under natural testing conditions that differ greatly from1This practice is under the jurisdiction of ASTM Committee D19 on Water andis the responsibility of Subcommittee D19.02 on Quality Systems,Specifi
12、cation,and Statistics.Current edition approved July 1,2021.Published July 2021.Originally approvedin 1950.Last previous edition approved in 2013 as D1141 98(2013).DOI:10.1520/D1141-98R21.2This practice is based upon the following studies:May,and Black,“Synthetic Ocean Water,”Naval Research Laborator
13、y ReportP-2909,August 1946.May,T.P.,and Alexander,A.L.,“Spray Testing with Natural and Synthetic SeaWater,Part I Corrosion Characteristics in the Testing of Metals,”Proceedings,ASTM,Vol 50,1950.Alexander,A.L.,and May,T.P.,“Spray Testing with Natural and Synthetic SeaWater,Part II A Study of Organic
14、Coatings,”Proceedings,ASTM,Vol 50,1950.3For 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.Copyright ASTM Internationa
15、l,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 established in the Decision on Principles for theDevelopment of International Standards,Guides and Re
16、commendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1those of the laboratory,and especially where effects of velocity,saltatmospheres,or organic constituents are involved.Also the rapid depletionof reacting elements present in low concentrations suggests caution indirect application of results.5.Reagents and Materials5.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents shall c
