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GB/T 6948-2008 English PDF

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GB/T 6948-2008: Method of determining microscopically the reflectance of vitrinite in coal
Status: Valid

GB/T 6948: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 6948-2008	English	299	Add to Cart	3 days [Need to translate]	Method of determining microscopically the reflectance of vitrinite in coal	Valid	GB/T 6948-2008
GB/T 6948-1998	English	639	Add to Cart	5 days [Need to translate]	Microscopical determination of the reflectance of vitrinite in coal	Obsolete	GB/T 6948-1998
GB/T 6948-1986	English	RFQ	ASK	3 days [Need to translate]	Method of determining microscopically the reflectance of vitrinite in coal	Obsolete	GB/T 6948-1986

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Basic data

Standard ID	GB/T 6948-2008 (GB/T6948-2008)
Description (Translated English)	Method of determining microscopically the reflectance of vitrinite in coal
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	D26
Classification of International Standard	73.040
Word Count Estimation	13,173
Date of Issue	2008-08-07
Date of Implementation	2009-03-01
Older Standard (superseded by this standard)	GB/T 6948-1998
Adopted Standard	ISO 7404-5-1994, MOD
Regulation (derived from)	National Standard Approval Announcement 2008 No.12 (Total No.125)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the method for the determination of the polished surface coal vitrinite maximum reflectance and random reflectance under a microscope oil immersion objective. This standard applies to the single- bituminous coal and anthracite coal blending or mixing of reflectance measurement. Lignite Reflectance, reflectivity measurement dispersed organic matter in sedimentary rocks can be referred to using. This standard is not interpreted by microscopic analysis by automated computer software vitrinite reflectance measured value methods. This standard does not apply to the determination of the composition of mixed blending ratio.

GB/T 6948-2008: Method of determining microscopically the reflectance of vitrinite in coal

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Method of determining microscopically the reflectance of vitrinite in coal ICS 73.040 D26 National Standards of People's Republic of China Replacing GB/T 6948-1998 Coal vitrinite reflectance microscopy determination (ISO 7404-5.1994, Methodsforthepetrographicanalysisof bituminouscoalandanthracite-Part 5. Methodof determiningmicroscopicalythereflectanceofvitrinite, MOD) Posted 2008-08-07 2009-03-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ISO 7404-5.1994 (E) "bituminous coal and anthracite coal and rock analysis methods --- Part 5. vitrinite reflectance Microscopic determination "rate (in English). This standard is based on ISO 7404-5. redraft 1994 (E). For ease of comparison, the information listed in Appendix A of this national standard List of international control and provision of standard terms and conditions. Because of legal requirements and the actual situation, the present standard in the use of international standards has been modified. These technical differences vertical single Line identification in which they are involved in terms of margin. Appendix B gives a list of the technical differences and their reasons, for reference. For ease of use, this standard also made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) use a decimal point instead of a decimal comma ",". ","; c) Remove the foreword and introduction of international standards. This standard replaces GB/T 6948-1998 "coal vitrinite reflectance microscopy determination." The main changes in the standard of GB/T 6948-1998 compared as follows. --- The GB/T 6948-1998 of the "instrument", "microscope photometer technical requirements" of the content included in MT/T 1053- 2008 "Determination of vitrinite reflectance microscope photometer technical conditions" in Chapter 6 and 8.2 of this standard references to the coal industry standard; --- Increased the determination of Coal Blending vitrinite reflectance (8.3.4 of this standard). The Standard Appendix A, Appendix B, Appendix C, Appendix D is an informative annex. The standard proposed by China Coal Industry Association. This standard coal by the National Standardization Technical Committee (SAC/TC42) centralized. This standard was drafted. Coal Research Institute, Xi'an Institute. The main drafters of this standard. Xiao Wen Zhao, Xiu instrument, Yedao Min. This standard replaces the standards previously issued as follows. --- GB 6948-1986, GB/T 6948-1998. Coal vitrinite reflectance microscopy determination

1 Scope

This standard specifies the method for the determination of the polished surface of coal vitrinite maximum reflectivity and the random reflectivity under a microscope, oil immersion objective. This standard applies to single seam of bituminous coal and anthracite coal blending or mixing the reflectivity measurement. Lignite reflectometry, carved rocks Reflectance measurement using bulk organic matter can be referred. This standard does not apply to explain vitrinite by a computer software by automating microscopic analysis The method of measuring the reflectance values. This standard does not apply to the determination of the composition of mixed blending ratio.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 12937 Rock term coal (GB/T 12937-2008, ISO 7404-1.1994, Methodsforthepetrographica- nalysisofbituminouscoalandanthracite-Part 1. Vocabulary, MOD) GB/T 16773-2008 analysis of coal sample preparation method (ISO 7404-2. 1985, Methodsforthepetrographica- nalysisofbituminouscoalandanthracite-Part 2. Methodofpreparingcoalsamples, MOD) MT/T 1053-2008 measuring microscope photometer technical conditions vitrinite reflectance

3 Terms and Definitions

Terms and definitions GB/T 12937 in established apply to this standard. Principle 4 Oil immersion objective under the microscope, the reflected light on the inner surface of the mirror polishing plastids defined area of \u200b\u200bvertical incident light (λ = 546nm) photoelectric Converters measured intensity, with a standard material of known reflectance intensity of reflected light under the same conditions for comparison. Because of minor differences between each single coal seam in the optical properties of vitrinite particles, the greater the difference in Coal Blending in, it must be different from the particles Obtain a sufficient number of measured values \u200b\u200bto ensure the representation of the results.

5 material

5.1 oil solution Should be easy to dry, non-corrosive, non-toxic substances in liquid oil, at which time refractive index Ne at 23 ℃ (λ = 546nm of light) Was 1.5180 ± 0.0004, the temperature coefficient of less than 0.0005K-1. Should regularly check the oil liquid refractive index. 5.2 calibration standard substance 5.2.1 reflectance standard substance It should be used in a range of biomass and coal reflectance standard reflectance similar. We should use the former State Quality and Technical Supervision approved Measuring instruments --- microscope photometer reflectance standard substance in Table 1. Coal can also be used with other similar reflectivity certified Standard material. So please keep the reflectance standard material surface finish. Polished surface of the microscope optical axis vertical.

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