1、Designation:D736509a(Reapproved 2015)Standard Practice forSampling,Preservation and Mitigating Interferences inWater Samples for Analysis of Cyanide1This standard is issued under the fixed designation D7365;the number immediately following the designation indicates the year oforiginal adoption or,in
2、 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 practice is applicable for the collection and pres-ervation of water samples for the
3、 analysis of cyanide.Thispractice addresses the mitigation of known interferences priorto the analysis of cyanide.Responsibilities of field samplingpersonnel and the laboratory are indicated.1.2 The sampling,preservation and mitigation of interfer-ence procedures described in this practice are recom
4、mendedfor the analysis of total cyanide,available cyanide,weak aciddissociable cyanide,and free cyanide by Test Methods D2036,D4282,D4374,D6888,D6994,D7237,D7284,and D7511.The information supplied in this practice can also be applied toother analytical methods for cyanide,for example,EPAMethod 335.4
5、.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 of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-p
6、riate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD2036 Test Methods for Cyanides in WaterD3370 Practices for Sampling Water from
7、Closed ConduitsD3694 Practices for Preparation of Sample Containers andfor Preservation of Organic ConstituentsD3856 Guide for Management Systems in LaboratoriesEngaged in Analysis of WaterD4282 Test Method for Determination of Free Cyanide inWater and Wastewater by MicrodiffusionD4374 Test Methods
8、for Cyanides in WaterAutomatedMethods for Total Cyanide,Weak Acid DissociableCyanide,and Thiocyanate(Withdrawn 2012)3D4411 Guide for Sampling Fluvial Sediment in MotionD4840 Guide for Sample Chain-of-Custody ProceduresD4841 Practice for Estimation of Holding Time for WaterSamples Containing Organic
9、and Inorganic ConstituentsD5847 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Water AnalysisD6888 Test Method for Available Cyanide with LigandDisplacement and Flow InjectionAnalysis(FIA)UtilizingGas Diffusion Separation and Amperometric DetectionD6994 Test Method
10、for Determination of Metal CyanideComplexes in Wastewater,Surface Water,Groundwaterand Drinking Water Using Anion Exchange Chromatog-raphy with UV DetectionD6696 Guide for Understanding Cyanide SpeciesD7237 Test Method for Free Cyanide and Aquatic FreeCyanide with Flow InjectionAnalysis(FIA)Utilizin
11、g GasDiffusion Separation and Amperometric DetectionD7284 Test Method for Total Cyanide in Water by MicroDistillation followed by Flow Injection Analysis with GasDiffusion Separation and Amperometric DetectionD7511 Test Method for Total Cyanide by Segmented FlowInjection Analysis,In-Line Ultraviolet
12、 Digestion and Am-perometric Detection2.2 U.S.EPA Methods:4EPA Method OIA-1677 Available Cyanide by Flow Injec-tion with Ligand ExchangeEPA Method 335.2 Cyanide,Total(Titrimetric;Spectropho-tometric)EPA Method 335.4 Determination of Total Cyanide bySemi-Automated Colorimetry1This practice is under t
13、he jurisdiction of ASTM Committee D19 on Water andis the direct responsibility of Subcommittee D19.06 on Methods for Analysis forOrganic Substances in Water.Current edition approved July 15,2015.Published August 2015.Originallyapproved in 2007.Last previous edition approved in 2009 as D7365 09a.DOI:
14、10.1520/D7365-09AR15.2For 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.3The last approved version of this historical
15、 standard is referenced onwww.astm.org.4Available from United States Environmental ProtectionAgency(EPA),WilliamJefferson Clinton Bldg.,1200 Pennsylvania Ave.,NW,Washington,DC 20460,http:/www.epa.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.Unite
16、d States1 2.3 USGS Methods:5USGS I-3300-85USGS I-4302-853.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminology D1129 and Guide D6696.3.1.2 refrigeration,nstoring the sample between its freez-ing point and 6C.3.1.3 holding time,nthe time lapsed from sample collec-tion to sample analysis.4.Summary of Practice4.1 Samples are collected in appropriate containers andmitigated for known interferences either in the field duringsample collection or in the la
