ASTM E872-82(2013)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: E872 − 82 (Reapproved 2013)
Standard Test Method for
Volatile Matter in the Analysis of Particulate Wood Fuels
This standard is issued under the fixed designation E872; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method determines the percentage of gaseous 4.1 The test procedures described in this test method can be
products,exclusiveofmoisturevapor,intheanalysissampleof used to determine the percentage of gaseous products, exclu-
particulate wood fuel that is released under the specific sive of moisture vapor, of any particulate wood fuel meeting
conditions of the test. The particulate wood fuel may be the requirements specified in this test method.
sanderdust, sawdust, pellets, green tree chips, hogged fuel, or
5. Apparatus
other type particulate wood fuel having a maximum particle
3 3
volume of 16.39 cm (1 in. ).Volatile matter, when determined
5.1 Platinum Crucible, with closely fitting cover, or a
as herein described, may be used to indicate yields on
nickel-chromium crucible, with closely fitting cover, pre-fired
processes to provide the basis for purchasing and selling or to
to oxidize and stabilize the weight. The crucible shall be of not
establish burning characteristics.
less than 10 or more than 20-mL capacity, not less than 25 or
more than 35 mm in diameter, and not less than 30 or more
1.2 The values stated in SI units are to be regarded as the
than 35 mm in height.
standard. The values given in parentheses are for information
only.
5.2 Vertical Electric Tube Furnace—The furnace may be of
the form shown in Fig. 1. It shall be regulated to maintain a
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the temperature of 950 6 20°C in the crucible, as measured by a
thermocouple positioned in the furnace.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6. Procedure
bility of regulatory limitations prior to use.
6.1 Sampling:
2. Referenced Documents
6.1.1 PlaceofSampling—Take sample where wood is being
2.1 ASTM Standards:
loaded into or unloaded from means of transportation or when
D346 Practice for Collection and Preparation of Coke
discharged from storage bins or conveyors.
Samples for Laboratory Analysis
NOTE 1—Samples collected from the surface of piles are, in general,
D2013 Practice for Preparing Coal Samples for Analysis
unreliable because of the exposure to the environment. If necessary,
E871 Test Method for Moisture Analysis of Particulate
collect nine increments from a foot or more below the surface at nine
Wood Fuels
points covering the pile.
6.1.2 Collection of Gross Sample:
3. Summary of Test Method
6.1.2.1 Collect increments regularly, systematically, and
3.1 Volatile matter is determined by establishing the loss in
with such frequency that the entire quantity of wood sampled
weight resulting from heating wood under rigidly controlled
will be represented proportionally in the gross sample.
conditions. The measured weight loss, corrected for moisture
6.1.2.2 The quantity of the sample shall be large enough to
as determined in Method E871, establishes the volatile matter
be representative but not less than 10 kg (22 lb).
content.
6.1.2.3 Place samples in an airtight container immediately
after collection. Maintain samples in the airtight container
This test method is under the jurisdiction of ASTM Committee E48 on
whenever possible to prevent gains or losses in moisture from
Bioenergy and Industrial Chemicals from Biomass and is the direct responsibility of
the atmosphere.
Subcommittee E48.05 on Biomass Conversion.
6.1.3 Sample reduction may be done by two methods, a
Current edition approved Aug. 15, 2013. Published November 2013. Originally
coning and dividing process, or by using a riffle. Mixing,
approved in 1982. Last previous edition approved in 2006 as E872 – 82 (2006).
DOI: 10.1520/E0872-82R13.
coning, and quartering are described and illustrated in Practice
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
D346.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.1.3.1 Coning and dividing reduction is accomplished by
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. placing the gross sample on a sheet of rubber or oil cloth.
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