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..?,:._ •,M,,, . <br />gnation: E 2242 - 07 <br />*U1 Desi <br />arrEanAt/rewu <br />Standard Test Method for <br />Column Percolation Extraction of Mine Rock by the <br />Meteoric Water Mobility Procedure' <br />This standard is issued under the fixed designation E 2242; the number immediately following the designation indicates the year of <br />original adoption or. in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A <br />superscript epsilon (e) indicates an editorial change since the last revision or reapproval. <br />1. Scope <br />1.1 This test method provides a procedure for the column <br />percolation extraction of mine rock in order to determine the <br />potential for dissolution and mobility of certain constituents by <br />meteoric water. <br />1.2 This test method is intended to describe the procedure <br />for performing column percolation extractions only. It does not <br />describe all types of sampling and analytical requirements that <br />may be associated with its application. <br />1.3 The values stated in SI units are to be regarded as the <br />standard. <br />1.4 This standard does not purport to address all of the <br />safety concerns, if any, associated with its use. It is the <br />responsibility of the user of this standard to establish appro- <br />priate safety and health practices and determine the applica- <br />bility of regulatory limitations prior to use. <br />2. Referenced Documents <br />2.1 ASTM Standards: 2 <br />D 1193 Specification for Reagent Water <br />D 1293 Test Methods for pH of Water <br />D 6234 Test Method for Shake Extraction of Mining Waste <br />by the Synthetic Precipitation Leaching Procedure <br />E 50 Practices for Apparatus, Reagents, and Safety Consid- <br />erations for Chemical Analysis of Metals, Ores, and <br />Related Materials <br />E 135 Terminology Relating to Analytical Chemistry for <br />Metals, Ores, and Related Materials <br />E 389 Test Method for Particle Size or Screen Analysis at <br />No. 4 (4.75-mm) Sieve and Coarser for Metal-Bearing <br />Ores and Related Materials <br />' This test method is under the jurisdiction of ASTM Committee E01 on <br />Analytical Chemistry for Metals, Ores and Related Materials and is the direct <br />responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal- <br />lurgical Materials. <br />Current edition approved June 1, 2007. Published June 2007. Originally <br />approved in 2002. Last previous edition approved in 2002 as E 2242 - 02. <br />2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or <br />contact ASTM Customer Service at service0astm.org. For Annual Book of ASTM <br />Standards volume information, refer to the standard's Document Summary page on <br />the ASTM website. <br />E 691 Practice for Conducting an Interlaboratory Study to <br />Determine the Precision of a Test Method <br />E 877 Practice for Sampling and Sample Preparation of Iron <br />Ores and Related Materials <br />E 882 Guide for Accountability and Quality Control in the <br />Chemical Analysis Laboratory <br />E 1601 Practice for Conducting an Interlaboratory Study to <br />Evaluate the Performance of an Analytical Method <br />2.2 Other References: <br />Meteoric Water Mobility Procedure, Bureau of Mining <br />Regulation and Reclamation, Nevada Division of Envi- <br />ronmental Protection, 9/19/90 <br />Standard Methods for the Examination of Water and <br />Wastewater, 18th edition, APHA/AWWA/WEF, 1992 <br />3. Terminology <br />3.1 Definitions--For definitions of terms used in this test <br />method, see Terminology E 135. <br />3.1.1 meteoric water-rainfall that has the potential to <br />contact materials and mobilize soluble constituents from mine <br />rock at a mining or mineral processing site. <br />3.1.2 mine rock--ore, waste rock or overburden excavated <br />in order to recover metals or minerals during mining operations <br />or coarse processed ore such as heap leach spoils. <br />4. Summary of T(mt Method <br />4.1 The test material is placed in a plastic column and <br />contacted with an equal weight of water during a 24 h leaching <br />period. The extract is collected and preserved for analysis of <br />inorganic constituents. <br />5. Significance and Use <br />5.1 This test method is intended as a means for obtaining an <br />extract from mine rock samples. The extract may be used to <br />estimate the final pH and release of certain constituents of the <br />test sample under the laboratory conditions described in this <br />test method. <br />5.2 The pH of the extraction fluid used in this test method <br />should reflect the pH of precipitation in the geographic region <br />in which the mine rock is being evaluated. <br />Copyright ® ASTM tntemational, 100 Ban Harbor Drive, PO Box C700, West Conshohocken, PA 19420.2959, United States. <br />LI <br />• <br /> <br />Copyright by ASTM Intl (all rights reserved); Thu Jun 26 15:52:01 EDT 2008 <br />Downloaded/printed by <br />Camp Dresser Me Kee pursuant to License Agreement. No further reproductions authorized.