GB/T 35816-2018Standard method for analysis of forestry biomass－Determination of extractives content (English PDF)
林业生物质原料分析方法 抽提物含量的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 6, 2018
Implementation date
September 1, 2018
Scope
GB/T 35816-2018 is the English-translated version of 林业生物质原料分析方法 抽提物含量的测定.
GB/T 35816-2018 sets out how to determine the content of extractives in forestry biomass raw materials. It applies to wood, bamboo, rattan, crop straw and other plant raw materials.
The document defines forestry biomass and three kinds of extractives - cold water extracts, hot water extracts and organic solvent extracts - and then describes how the powder samples are prepared, after sorting the raw material by source and form into wood, non-wood raw materials and other forestry biomass.
It refers to the papermaking raw material methods of GB/T 2677.2, GB/T 2677.4, GB/T 2677.5 and GB/T 2677.6 for moisture, water extractives, 1% sodium hydroxide extract and organic solvent extractives.
Biomass testing laboratories use it. It was issued on 6 February 2018 and has applied since 1 September 2018.
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Document preview — GB/T 35816-2018
National Standard of the People's Republic of China
- ICS
- 65.020.01
- Classification
- B 60
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Preparation of Forestry Biomass Powder Samples
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
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 document. 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
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
Extract extracted forest biomass from cold water.
3.3 Hot water extracts
The extracted biomass was extracted with hot water from forestry biomass.
3.4 Organic solvent extracts
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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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 2677.2-2011Determination of moisture content in fibrous raw material
- GB/T 2677.4-1993Fibrous raw material. Determination of water solubility
- GB/T 2677.5-1993Fibrous raw material. Determinationof one percent sodium hydroxide solubility
- GB/T 2677.6-1994Fibrous raw material. Determination of solvent extractives
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Related Standards
GB/T 2677.2-2011 — Determination of moisture content in fibrous raw material
GB/T 2677.4-1993 — Fibrous raw material. Determination of water solubility
GB/T 2677.5-1993 — Fibrous raw material. Determinationof one percent sodium hydroxide solubility
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GB/T 35816-2018
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