• 中文主题词：氧化铬 ; 铬矿石 ; 氧化物 ; 铬 ; 金属 ; 化学分析和试验 ; 试验 ; 分析 ; 金属矿物
• 标准号：ASTM E342-2004
• 发布日期：2004
• 英文题名：Standard Test Method for Determination of Chromium Oxide in Chrome Ores by Permanganate Titrimetry
• 英文主题词：chromium ores ; chromium oxide content
• 标准状态：现行
• 发布单位：US-ASTM
• 国际标准分类号：73.060.30 (Chromium ores)
• 载体形态：3P.;A4
• 中国标准分类号：D33
• 国别：美国材料与试验协会

This test method is intended to be used for compliance with compositional specifications for chromium oxide content. It is assumed that all who use these procedures will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices must be followed such as those described in Guide E 882.

1.1 This test method covers the determination of chromium oxide (Cr₂O₃) in chrome ores in the concentration range from 25 to 60 %.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.