ASTM E1568-21 用火试金重量分析法测定活性炭中金的标准试验方法.pdf

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards Guides and Remendations issued by the World Trade Organization Technical Barriers to Trade (TBT)Committee. Designation:E1568-21 INTERNATIONAL Standard Test Method for Determination of Gold in Activated Carbon by Fire Assay Gravimetry This standard is issued under the fixed designation E1568:the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision.A number in parentheses indicates the year of last reapproval.A superseript epsilon (8)indicates an editorial change since the last revision or reapproval. 1.Scope erations for Chemical Analysis of Metals Ores and 1.1 This test method covers the determination of gold in Related Materials activated carbon by fire assay collection and gravimetric E135 Terminology Relating to Analytical Chemistry for measurement.It covers the range of 15 ug/g to 5000 ug/g gold. Metals Ores and Related Materials E173 Practice for Conducting Interlaboratory Studies of 1.2 Units-The values stated in SI units are to be regarded Methods for Chemical Analysis of Metals (Withdrawn as the standard.No other units of measurement are included in 1998)3 this standard. E276 Test Method for Particle Size or Screen Analysis at 1.3 This standard does not purport to address all of...