ASTM_D_7575_-_11.pdf

Designation:D757511Standard Test Method forSolvent-Free Membrane Recoverable Oil and Grease byInfrared Determination1This standard is issued under the fixed designation D7575;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.Scope1.1 This test method covers the determination of oil andgrease in produced and waste water samples over the concen-tration range outlined in Table 1 that can be extracted with aninfrared-amenable membrane and measured by infrared trans-mission through the membrane.1.2 This method defines oil and grease in water as thatwhich is extractable in the test method and measured byinfrared transmission.1.3 The method detection limit(MDL)and recommendedreporting range are listed in Table 1.1.4 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 WaterD5847 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Water AnalysisE168 Practices for General Techniques of Infrared Quanti-tative AnalysisE178 Practice for Dealing With Outlying Observations2.2 EPA Standards3EPA Method 1664 Revision A:N-Hexane Extractable Ma-terial(HEM;Oil and Grease)and Silica Gel TreatedN-Hexane Extractable Material(SGT-HEM;Non-polarMaterial)By Extraction and Gravimetry40 CFR49 CFR3.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 grease,n“membrane-recoverable oil andgrease”is a method-defined analyte;that is,the definition ofmembrane-recoverable oil and grease is dependent on theprocedure used.3.2.1.1 DiscussionThe nature of the oils or greases(orboth),and the presence of recoverable non-oily matter in thesample will influence the material measured and interpretationof results.3.2.2 extractor,na device that contains an infrared-amenable oil-and-grease solid-phase-extraction-membrane anddirects water flow through the membrane under applied pres-sure.4.Summary of Test Method4.1 This is a performance-based method and modificationsare allowed to improve performance.4.2 A sample of water is processed through an extractor.4.3 The extractor is then sufficiently dried of water so as toallow infrared analysis.4.4 The extractor is examined by an infrared analyzer for anoil and grease measurement.4.5 Calibrations and data are processed manually or withappropriate software.1This 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 Nov.1,2011.Published November 2011.Originallyapproved 2010.Last current version approved in 2010 as D7575 101.DOI:10.1520/D7575-11.2For 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 United States Environmental Protection Agency(EPA),ArielRios 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.United States1 5.Significance and Use5.1 The presence and concentration of oil and grease indomestic and industrial wastewater is of concern to the publicbecause of its deleterious health,environmental,safety,andaesthetic effects.5.2 Regulations and standards have been established thatrequire monitoring of oil and grease in water and wastewater.4NOTE1Different oil and grease materials may have different infraredabsorptivities.Certain materials,such as synthetic silicone-based orperfluorinated oils,may have absoptivities inconsistent with those ofnaturally occurring oil and grease materials.Caution should be takenwhen testing matrices suspected of containing proportions of thesematerials.In such cases,laboratory spike samples,laboratory checksamples,equivalency testing,or combinations thereof,using these mate-rials in question may be appropriate.6.Interferences6.1 Method interferences may be caused by contaminants ininstrumentation,reagents,glassware and other apparatus pro-ducing artifacts.Routine laboratory