GB/T 35816-2018 English PDF

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GB/T 35816-2018: Standard method for analysis of forestry biomass -- Determination of extractives content
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Basic data

Standard ID: GB/T 35816-2018 (GB/T35816-2018)
Description (Translated English): Standard method for analysis of forestry biomass -- Determination of extractives content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B60
Classification of International Standard: 65.020.01
Word Count Estimation: 10,180
Date of Issue: 2018-02-06
Date of Implementation: 2018-09-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 35816-2018: Standard method for analysis of forestry biomass -- Determination of extractives content

---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.
Standard method for analysis of forestry biomass-Determination of extractives content ICS 65.020.01 B60 National Standards of People's Republic of China Forestry biomass raw material analysis method Determination of extractive content Published on.2018-02-06 2018-09-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the State Forestry Administration. This standard is under the jurisdiction of the National Forestry Biomass Standardization Technical Committee (SAC/TC416). This standard was drafted by. Northeast Forestry University. The main drafters of this standard. Wang Weihong, Lan Yongqiang, Ren Shixue, Wang Qingwen, Hao Xiaolong. Forestry biomass raw material analysis method Determination of extractive content

1 Scope

This standard specifies the method for determining the content of extractives from forestry biomass raw materials. This standard applies to the determination of the extractive content of wood, bamboo, rattan, crop straw and other plant raw materials.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 2677.2-2011 Determination of moisture in papermaking raw materials GB/T 2677.4-1993 Determination of extractables content of papermaking raw materials GB/T 2677.5-1993 Determination of 1% Sodium Hydroxide Extract Content in Papermaking Materials GB/T 2677.6-1994 Determination of extractables content of organic solvent in papermaking raw materials

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Forestry biomass forestrybiomass The natural organic matter produced by plant life activities such as photosynthesis, which consists of three main polymers. cellulose, hemicellulose and lignin. It is composed of starch, pectin, protein, extractives and other various components, mainly in various forms of wood, bamboo, rattan, straw, fruit shells, etc. The existence of the formula is a renewable natural plant fiber resource. 3.2 Cold water extracts coldwater-solubleextractives Extract extracted forest biomass from cold water. 3.3 Hot water extracts hotwater-soluble extractives The extracted biomass was extracted with hot water from forestry biomass. 3.4 Organic solvent extracts organicsolvent-soluble extractives Extracting forestry biomass with organic solvents.

4 Preparation of Forestry Biomass Powder Samples

4.1 General requirements Sample raw materials are divided into three categories according to their source and form. wood, non-wood raw materials, and other forestry biomass raw materials. ......

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