ASTM D2797/D2797M-2011a
通过反射光对制备的煤样品的显微分析标准操作规程
Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
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- 标准号
- ASTM D2797/D2797M-2011a
- 发布日期
- 2011年
- 实施日期
- 废止日期
- 无
- 中国标准分类号
- D21
- 国际标准分类号
- 73.040 (Coals)
- 发布单位
- US-ASTM
- 适用范围
Briquets of granular bituminous coals and anthracite prepared in accordance with the laboratory procedures of this practice will have flat, scratch-free surfaces suitable for examination with a microscope using reflected light illumination. The polished surfaces of briquettes prepared by this practice will contain particles representative of the original gross sample.
Samples prepared by this practice are used for microscopical determination of the reflectance of the organic components in a polished specimen of coal (Test Method D2798) and for microscopical determination of the volume percent of physical components of coal (Test Method D2799).
1.1 This practice covers laboratory procedures for the preparation of granular samples of bituminous coal and anthracite samples for examination with a microscope using reflected light illumination. It does not apply to the preparation of oriented blocks of coal.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 This standard does not purport to address the safety concerns 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.