ASTM_D_3869_-_15.pdf

Designation:D386915Standard Test Methods forIodide and Bromide Ions in Brackish Water,Seawater,andBrines1This standard is issued under the fixed designation D3869;the number immediately following the designation indicates the year oforiginal adoption or,in 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.Scope*1.1 These test methods2cover the determination of solubleiodide and bromide ions,or both,in brackish water,seawater,and brines.Four test methods are given as follows:1.1.1 Test Method A for both Iodide and Bromide IonsVolumetric,for concentrations from 0.2 to 2000 mg/L iodideand from 5 to 6500 mg/L bromide(Sections 7 15).1.1.2 Test Method B for Iodide IonColorimetric,for con-centrations from 0.2 to 2000 mg/L iodide(Sections 16 25).1.1.3 Test Method C for Iodide IonSelective electrode,forconcentrations from 1 to 2000 mg/L iodide(Sections 26 34).1.1.4 Test Method D for Bromide IonColorimetric,forconcentrations from 40 to 6500 mg/L bromide(Sections 35 44).1.2 Test MethodAis intended for use on all brackish waters,seawaters,and brines that contain appreciable amounts ofiodide or bromide ions or both.Test Methods B,C,and D,because of their rapidity and sensitivity,are recommended forthe analysis of brackish waters,seawaters,and brines in thefield and in the laboratory.1.3 Samples containing from 0.2 to 2000 mg/L of iodide or5 to 6500 mg/L of bromide may be analyzed by these methods.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard 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.For specificprecautionary statements,see 20.2 and 39.2.2.Referenced Documents2.1 ASTM Standards:3D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD3370 Practices for Sampling Water from Closed ConduitsD5810 Guide for Spiking into Aqueous SamplesD5847 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Water AnalysisE60 Practice for Analysis of Metals,Ores,and RelatedMaterials by SpectrophotometryE200 Practice for Preparation,Standardization,and Storageof Standard and Reagent Solutions for Chemical AnalysisE275 Practice for Describing and Measuring Performance ofUltraviolet and Visible Spectrophotometers3.Terminology3.1 DefinitionsFor definitions of terms used in these testmethods,refer to Terminology D1129.4.Significance and Use4.1 Identification of a brackish water,seawater,or brine isdetermined by comparison of the concentrations of theirdissolved constituents.The results are used to evaluate theorigin of the water,determine if it is a possible pollutant ordetermine if it is a commercial source of a valuable constituentsuch as iodine or bromine.5.Reagents5.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents shall conform to the specification of the Committee1These test methods are under the jurisdiction of ASTM Committee D19 onWater and are the direct responsibility of Subcommittee D19.05 on InorganicConstituents in Water.Current edition approved March 15,2015.Published April 2015.Originallyapproved in 1979.Last previous edition approved in 2009 as D3869 09.DOI:10.1520/D3869-15.2Additional information is contained in the following references:Collins,A.G.,Geochemistry of Oilfield Waters,Elsevier,New York,N.Y.,1975,496 pp.AmericanPetroleum Institute,API Recommended Practice for Analysis of Oilfield Waters,Subcommittee onAnalysis of Oilfield Waters,API RP,45 2nd ed,1968,49 pp.Hoke,S.H,Fletcher,G.E.,and Collins,A.G.,“Fluoride and Iodide Selective ElectrodesApplied to Oilfield Brine Analysis,”US Department of Energy,Report ofInvestigations,BETC/RI-78/7,1978.3For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 on Analytical Reagents of the American Chemical Society,4where such specifications are available.Other 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.5.2 Purity of WaterUnless otherwise indicated,referenceto water shall be understood to mean reagent water conformingto Specification D