ASTM_D_3325_-_90_2013.pdf

Designation:D332590(Reapproved 2013)Standard Practice forPreservation of Waterborne Oil Samples1This standard is issued under the fixed designation D3325;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 practice covers the preservation of waterborne oilsamples from the time of collection to the time of analysis.Information is provided to ensure sample integrity and to avoidcontamination and to minimize microbial degradation.1.2 The practice is for controlled field or laboratory condi-tions and specifies thorough preparation of equipment andprecise operation.Where these details must be compromised ina field emergency,nonstandard simplifications are recom-mended that will minimize or eliminate consequent errors.NOTE1Procedures for the analysis of oil spill samples are PracticesD3326,D3415,D3650,and D4489,and Test Methods D3327,D3328,andD3414.A guide to the use of ASTM test methods for the analysis of oilspill samples is found in Practice D3415.1.3 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 WaterD3326 Practice for Preparation of Samples for Identificationof Waterborne OilsD3327 Method for Analysis of Selected Elements in Wart-erborne Oils3D3328 Test Methods for Comparison of Waterborne Petro-leum Oils by Gas ChromatographyD3414 Test Method for Comparison of Waterborne Petro-leum Oils by Infrared SpectroscopyD3415 Practice for Identification of Waterborne OilsD3650 Test Method for Comparison of Waterborne Petro-leum Oils By Fluorescence AnalysisD4489 Practices for Sampling of Waterborne Oils3.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,refer to Terminology D1129.4.Summary of Practice4.1 Special types of sample containers and shipping con-tainers are recommended.Samples may be of several types:tarballs,collected oil,oil-water mixtures,emulsions,and oil andwater on collecting devices such as silanized glass cloth,TFE-fluorocarbon polymer,or other materials.Instructions aregiven for the care of samples to minimize changes due toautoxidation and microbial attack between the time of sam-pling and the time of analysis.Services available for transpor-tation of samples are described.5.Apparatus5.1 Sample ContainersBorosilicate glass containers thathave been thoroughly cleaned are preferable.All glasscontainers,new or used,must be thoroughly cleaned andwashed prior to use.The cleaning steps consist of an initialwash with a warm aqueous detergent mixture followed by sixhot tap water rinses,two rinses with reagent water,a rinse withreagent-grade acetone,and a final rinse with a solvent such aspentane,hexane,cyclohexane,dichloromethane,or chloroformfollowed by drying in a clean oven at 105C or hotter for 30min.If the glassware requires cleaning under field conditions,it should be washed with warm aqueous detergent followed byextensive water rinsing.Asolvent rinse with acetone should bemade,if possible,followed by lengthy air drying to removeresidual solvent.(WarningFor safety reasons,the use ofpentane,hexane,or cylcohexane is recommended over use ofdichloromethane or carbon tetrachloride.)NOTE2Hot reagent water rinses are advisable where hot tap watermight reintroduce contamination.5.1.1 Plastic containers are not acceptable since volatilehydrocarbons diffuse readily through many commercial plasticcontainers or may be absorbed into the plastic.In addition,theplasticizer may dissolve in the sample causing misleadingresults.1This practice is under the 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 Feb.15,2013.Published March 2013.Originallyapproved in 1974.Last previous edition approved in 2002 as D3325 90(2006).DOI:10.1520/D3325-90R13.2For 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.3Withdrawn.*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 5.1.2 Metal containers usually should be avoided becausethe nickel and vanadium determinations could be invalidatedby introduction of metal from the can.5.1.3 When field expedients must be employed,an emptycontainer of each type used should be included in the shipment