ASTM E2295-21 通过熔渣和杯中银的测定分析含金属矿石、精矿和相关冶金材料时火试金银校正的标准实施规程.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:E2295-21 INTERNATIONAL Standard Practice for Fire Assay Silver Corrections in Analysis of Metal Bearing Ores Concentrates and Related Metallurgical Materials by Silver Determination in Slags and Cupels This standard is issued under the fixed designation E2295: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 (e)indicates an editorial change since the last revision or reapproval. 1.Scope E50 Practices for Apparatus Reagents and Safety Consid- 1.1 This practice covers the determination of silver correc- erations for Chemical Analysis of Metals Ores and tions for fire assay of metal bearing ores concentrates and Related Materials related metallurgical materials using the spent slags and cupels E135 Terminology Relating to Analytical Chemistry for from the fire assay process by gravimetry and atomic absorp- Metals Ores and Related Materials tion spectrophotometry. E882 Guide for Accountability and Quality Control in the Chemical Analysis Laboratory 1.2 The test methods appear in the f...