ASTM_D_7262_-_10.pdf

Designation:D726210Standard Test Method forEstimating the Permanganate Natural Oxidant Demand ofSoil and Aquifer Solids1This standard is issued under the fixed designation D7262;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 This test method covers the estimation of the perman-ganate natural oxidant demand(PNOD)through the determi-nation of the quantity of potassium permanganate(KMnO4)that organic matter and other naturally occurring oxidizablespecies present in soil or aquifer solids will consume underspecified conditions as a function of time.Oxidizable speciesmay include organic constituents and oxidizable inorganicions,such as ferrous iron and sulfides.The following testmethods are included:Test Method A48-hour Permanganate Natural OxidantDemandTest Method BPermanganate Natural Oxidant DemandKinetics1.2 This test method is limited by the reagents employed toa permanganate natural oxidant demand(PNOD)of 60 gKMnO4 per kg soil or aquifer solids after a period of 48 hours(Method A)or two weeks(Method B).1.3 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.4 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to interpret the results ofthe data.It is the responsibility of the user of this standard tointerpret the results obtained and to determine the applicabilityof these results prior to use.1.6 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.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD1193 Specification for Reagent WaterD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials TestingD6026 Practice for Using Significant Digits in GeotechnicalDataD6051 Guide for Composite Sampling and Field Subsam-pling for Environmental Waste Management ActivitiesD6169 Guide for Selection of Soil and Rock SamplingDevices Used With Drill Rigs for Environmental Investi-gationsD6282 Guide for Direct Push Soil Sampling for Environ-mental Site CharacterizationsD6286 Guide for Selection of Drilling Methods for Environ-mental Site Characterization2.2 Other Standards:3Method 4500KMnO4Standard Methods for the Examina-tion of Water and Wastewater,20th Ed.1998ANSI/AWWA B603-03 Standard for Permanganates3.Terminology3.1 For common definitions of technical terms in thisstandard,refer to Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.2.1 permanganate natural oxidant demand(PNODt)themass of potassium permanganate consumed per mass of soil oraquifer solids as a function of time.1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone Investigations.Current edition approved July 1,2010.Published August 2010.Originallyapproved in 2007.Last previous edition approved in 2007 as D726207.DOI:10.1520/D7262-10.2For 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.3Available from American Water Works Association(AWWA),6666 W.QuincyAve.,Denver,CO 80235,http:/www.awwa.org.*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 3.2.2 maximum permanganate natural oxidant demand(PNODmax)the maximum mass of potassium permanganateconsumed per mass of soil or aquifer solids over time.3.2.3 permanganate natural oxidant demand kineticstherate at which potassium permanganate is consumed by soil oraquifer solids.4.Summary of Test Method4.1 Many organic and reduced inorganic substances presentin soil and aquifer solids can be oxidized by permanganate.Astandard potassium permanganate solution is added to aspecific amount of soil or aquifer solids and allowed to reactfor a period of 48 hours(MethodA)or two weeks(Method B).The residual permanganate concentration is measured at pre-scribed sampling times and the difference in concentration isused to calculate the PNODtat that time.4.2 Many organic and