ASTM_D_3921_-_96_2011.pdf

Designation:D392196(Reapproved 2011)Standard Test Method forOil and Grease and Petroleum Hydrocarbons in Water1This standard is issued under the fixed designation D3921;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 Thistestmethodcoversthedeterminationoffluorocarbon-extractable substances as an estimation of thecombined oil and grease and the petroleum hydrocarboncontents of a sample of water or waste water in the range from0.5 to 100 mg/L.It is the users responsibility to assume thevalidity of the standard for untested types of water.1.2 This test method defines oil and grease in water andwaste water as that matter which is extractable in the testmethod and measured by infrared absorption.Similarly,thistest method defines petroleum hydrocarbons in water and wastewater as that oil and grease which is not adsorbed by silica gelin the test method and that is measured by infrared absorption.1.3 Low-boiling organic materials are lost by evaporationduring the manipulative transfers.However,these evaporativelosses are generally much lower than those experienced withgravimetric procedures that require solvent evaporation beforethe residue is weighed.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.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD3325 Practice for Preservation of Waterborne Oil SamplesD3370 Practices for Sampling Water from Closed ConduitsD3856 Guide for Management Systems in LaboratoriesEngaged in Analysis of WaterD5847 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Water AnalysisE168 Practices for General Techniques of Infrared Quanti-tative Analysis3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology D1129 and Practices E168.3.2 Definitions of Terms Specific to This Standard:3.2.1 oil and greasethe organic matter extracted fromwater or waste water and measured by this test method.3.2.2 petroleum hydrocarbonsthe oil and grease remain-ing in solution after contact with silica gel and measured bythis test method.4.Summary of Test Method4.1 The acidified sample of water or waste water is ex-tracted serially with three 30-mLvolumes of 1,1,2-trichloro-1,2,2-trifluoroethane(referred to in this test method as sol-vent).3The extract is diluted to 100 mL and a portion isexamined by infrared spectroscopy4to measure the amount ofoil and grease removed from the original sample.A majorportion of the remaining extract is contacted with silica gel toremove polar substances,thereby providing a solution ofpetroleum hydrocarbons.This treated extract is then similarlyexamined by infrared spectroscopy.5.Significance and Use5.1 The presence of oil and grease in domestic and indus-trial waste water is of concern to the public because of its1This test method is under the jurisdiction of ASTM Committee D19 on Waterand is the direct responsibility of Subcommittee D19.06 on Methods forAnalysis forOrganic Substances in Water.Current edition approved May 1,2011.Published June 2011.Originallyapproved in 1980.Last previous edition approved in 2003 as D3921 96(2003)1.DOI:10.1520/D3921-96R11.2For 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.3Gruenfeld,M.,“Extraction of Dispersed Oils from Water for QuantitativeAnalysis by Infrared Spectrophotometry,”Environmental Science and Technology,Vol 7,1973,pp.636639.4Consult the manufacturers operation manual for the specific instructionsrelated to the infrared spectrometer or analyzer to be used.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesNOTICE:This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International(www.astm.org)for the latest information1 Copyright by ASTM Intl(all rights reserved);Fri Feb 15 00:27:51 EST 2019Downloaded/printed byKongju National University(Kongju National University)pursuant to License Agreement.No further reproductions authorized.deleterious a