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ASTM E 1821 Document Information:
Title
Standard Test Method for Determination of Carbohydrates in Biomass by Gas Chromatography
ASTM International
Publication Date:
May 1, 2008
Scope:
This test method describes the determination of structural
carbohydrates present in a biomass sample, expressed as the percent
mass of an oven-dried sample basis of each anhydrosugar.
Sample materials suitable for this procedure include hard and
softwoods, herbaceous materials, such as sericea and switchgrass,
agricultural residues, such as corn stover, wheat straw, and
bagasse, wastepaper, such as boxboard, office waste, and newsprint,
acid or alkaline-pretreated biomass, washed free of any residual
acid or alkali, and the solid fraction of fermentation
residues.
The options for the types of samples to be analyzed in this
procedure are:
Prepared Biomass Samples:
Air Dried Material—Results are reported as the percent
by mass, based on the oven-dried mass of the air-dried sample.
45ºC Dried Material—Results are reported as the percent
by mass, based on the oven-dried mass of the 45ºC dried sample.
Freeze Dried Material—Results are reported as the
percent by mass, based on the oven-dried mass of the freeze dried
sample.
Extractives-Free Sample—Results are reported as the
percent by mass, based on the oven-dried mass of the extracted
sample.
This standard method is generally not suitable for samples that
contain soluble, nonstructural carbohydrates unless they are
removed prior to analysis.
The values stated in SI units are to be regarded as standard. No
other units of measurement are included in this standard.
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. See Section 8 for specific hazards
statements.
Keywords:
- agricultural residue
- biomass
- carbohydrates
- fermentation residue
- herbaceous
- monosaccharide
- wastepaper
- wood
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