ASTM_E_2242_-_13.pdf

Designation:E224213Standard Test Method forColumn Percolation Extraction of Mine Rock by theMeteoric Water Mobility Procedure1This standard is issued under the fixed designation E2242;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 provides a procedure for the columnpercolation extraction of mine rock in order to determine thepotential for dissolution and mobility of certain constituents bymeteoric water.1.2 This test method is intended to describe the procedurefor performing column percolation extractions only.It does notdescribe all types of sampling and analytical requirements thatmay be associated with its application.1.3 The values stated in SI units are to be regarded as thestandard.1.4 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:2D1193 Specification for Reagent WaterD1293 Test Methods for pH of WaterD6234 Test Method for Shake Extraction of Mining Wasteby the Synthetic Precipitation Leaching ProcedureD7237 Test Method for Free Cyanide with Flow InjectionAnalysis(FIA)Utilizing Gas Diffusion Separation andAmperometric DetectionE50 Practices for Apparatus,Reagents,and Safety Consid-erations for Chemical Analysis of Metals,Ores,andRelated MaterialsE135 Terminology Relating to Analytical Chemistry forMetals,Ores,and Related MaterialsE389 Test Method for Particle Size or ScreenAnalysis at No.4(4.75-mm)Sieve and Coarser for Metal-Bearing Oresand Related MaterialsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE877 Practice for Sampling and Sample Preparation of IronOres and Related Materials for Determination of Chemi-cal Composition and Physical PropertiesE882 Guide for Accountability and Quality Control in theChemical Analysis LaboratoryE1601 Practice for Conducting an Interlaboratory Study toEvaluate the Performance of an Analytical Method2.2 Other References:Meteoric Water Mobility Procedure,Bureau of MiningRegulation and Reclamation,Nevada Division of Envi-ronmental Protection,9/19/90Standard Methods for the Examination of Water and Waste-water,18th edition,APHA/AWWA/WEF,19923.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test method,seeTerminology E135.3.1.2 meteoric waterrainfall that has the potential tocontact materials and mobilize soluble constituents from minerock at a mining or mineral processing site.3.1.3 mine rockore,waste rock or overburden excavatedin order to recover metals or minerals during mining operationsor coarse processed ore such as heap leach spoils.4.Summary of Test Method4.1 The test material is placed in a plastic column andcontacted with water to produce an effluent containing an equalweight of solution to dry solids during a leaching period of upto 48 h.The extract is collected and preserved for analysis ofinorganic constituents.5.Significance and Use5.1 This test method is intended as a means for obtaining anextract from mine rock samples.The extract may be used toestimate the final pH and release of certain constituents of thetest sample under the laboratory conditions described in thistest method.1This test method is under the jurisdiction of ASTM Committee E01 onAnalytical Chemistry for Metals,Ores,and Related Materials and is the directresponsibility of Subcommittee E01.02 on Ores,Concentrates,and Related Metal-lurgical Materials.Current edition approved Oct.1,2013.Published November 2013.Originallyapproved in 2002.Last previous edition approved in 2012 as E2242 12a.DOI:10.1520/E2242-13.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2 The pH of the extraction fluid used in this test methodshould reflect the pH of precipitation in the geographic regionin which the mine rock is being evaluated.5.3 This test method is designed to mobilize potentialcontaminants present in the solids,so that the resulting extractcan be used to assess leachate that could potentially beproduced from mine rock in the field.5.4 This test method has not been demonstrated to simulateactual site leaching conditions.5.5 This test method produces extracts that are amenable tothe determination of both major and minor(trace)constituents.When minor constituents are being determined,it is especiallyimp