1、Designation:D483903(Reapproved 2017)Standard Test Method forTotal Carbon and Organic Carbon in Water by Ultraviolet,orPersulfate Oxidation,or Both,and Infrared Detection1This standard is issued under the fixed designation D4839;the number immediately following the designation indicates the year ofor
2、iginal 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.Scope1.1 This test method covers the determination of totalcarbon(TC),inorgan
3、ic carbon(IC),and total organic carbon(TOC)in water,wastewater,and seawater in the range from 0.1mg/L to 4000 mg/L of carbon.1.2 This test method was used successfully with reagentwater spiked with sodium carbonate,acetic acid,and pyridine.It is the users responsibility to ensure the validity of thi
4、s testmethod for waters of untested matrices.1.3 This test method is applicable only to carbonaceousmatter in the sample that can be introduced into the reactionzone.The syringe needle or injector opening size generallylimit the maximum size of particles that can be so introduced.1.4 In addition to
5、laboratory analyses,this test method maybe applied to stream monitoring.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It
6、 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.1.7 This international standard was developed in accor-dance with internationally recognized principles on st
7、andard-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:2D1129 Terminology Relating to WaterD1192 Guide
8、for Equipment for Sampling Water and Steamin Closed Conduits(Withdrawn 2003)3D1193 Specification for Reagent WaterD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD3370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 ConduitsD4129 Test Method for Tot
9、al and Organic Carbon in Waterby High Temperature Oxidation and by CoulometricDetectionD5847 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Water Analysis3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminology D1129.3.2
10、Definitions of Terms Specific to This Standard:3.2.1 inorganic carbon(IC),ncarbon in the form ofcarbon dioxide,carbonate ion,or bicarbonate ion.3.2.2 refractory material,nthat which cannot be oxidizedcompletely under the test method conditions.3.2.3 total carbon(TC),nthe sum of IC and TOC.3.2.4 tota
11、l organic carbon(TOC),ncarbon in the form oforganic compounds.4.Summary of Test Method4.1 FundamentalsCarbon can occur in water as an inor-ganic and organic compound.This test method can be used to1This test method is under the jurisdiction of ASTM Committee D19 on Waterand is the direct responsibil
12、ity of Subcommittee D19.06 on Methods forAnalysis forOrganic Substances in Water.Current edition approved Dec.15,2017.Published December 2017.Originallyapproved in 1988.Last previous edition approved in 2011 as D4839 03(2011).DOI:10.1520/D4839-03R17.2For referenced ASTM standards,visit the ASTM webs
13、ite,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 standard is referenced onwww.astm.org.Copyright ASTM International,100
14、 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 Recomme
15、ndations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 make independent measurements of IC,TOC,and TC,and canalso determine IC by the difference of TC and TOC,and TOCas the difference of TC and IC.4.2 The essentials of this test method are:(a)removal of IC,if des
16、ired,by acidification of the sample and sparging bycarbon-free gas;(b)conversion of remaining carbon to CO2byaction of persulfate,aided either by elevated temperature orultraviolet(UV)radiation;(c)detection of CO2that is sweptout of the reactor by a gas stream;and(d)conversion ofdetector signal to a display of carbon concentration in mg/L.Adiagram of suitable apparatus is given in Fig.1.5.Significance and Use5.1 This test method is used for determination of the carboncontent of water from a vari
