ASTM D1997-91(2008)e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D1997 − 91 (Reapproved2008)
Standard Test Method for
Laboratory Determination of the Fiber Content of Peat
Samples by Dry Mass
This standard is issued under the fixed designation D1997; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
´ NOTE—Section references were editorially corrected in Section 9.2 in July 2009.
1. Scope retained on a 100-mesh sieve (openings 150 µm). Plant
materials larger than 20 mm in smallest dimension are not
1.1 This test method covers the laboratory determination of
considered fibers.
thefibercontentofsamplesofpeat(asdefinedinClassification
D4427) by dry mass. It also may be used for non-peat organic 3
4. Summary of Test Method
soil materials.
4.1 Aknown mass of undisturbed, undried peat is soaked in
1.2 Because this test method is simple and requires no
a dispersing agent (5% sodium hexametaphosphate) for ap-
sophisticated equipment to perform, it is especially recom-
proximately 15 h. The material is then washed through a
mended for routine reconnaissance work, where large numbers
100-mesh (150 µm) sieve (see Specification E11) by applica-
of samples need to be tested and mineral contents are low.
tion of a gentle flow of tap water. The fibrous material left on
1.3 The values stated in SI units are to be regarded as the sieve is oven-dried (at 105°C) until a constant mass is
standard. No other units of measurement are included in this achieved.The mass of fiber is expressed as a percentage of the
standard. oven-dried mass of the original sample.
1.4 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
5.1 The purpose of this test method is to standardize the
responsibility of the user of this standard to establish appro-
procedure for determining fiber content of peat samples by dry
priate safety and health practices and determine the applica-
mass.
bility of regulatory limitations prior to use.
5.2 A standard test method for determining the quantity of
2. Referenced Documents
fibers in a peat sample is necessary not only for classifying
2.1 ASTM Standards:
samples (as in Classification D4427), but is also a significant
D2974Test Methods for Moisture,Ash, and Organic Matter parameter in predicting or defining the many end uses of peat.
of Peat and Other Organic Soils
In this regard, fiber content has been related to agricultural and
D4427Classification of Peat Samples by LaboratoryTesting horticulturalenduses(suchasmulching,soilenrichment,etc.),
E11Specification forWovenWireTest Sieve Cloth andTest
geotechnical measurements (such as strength, compressibility,
Sieves permeability, etc.), industrial chemical uses (such as produc-
tion of waxes, activated carbon, medicinals, etc.), and even
3. Terminology
energy uses (such as direct combustion, methanol production,
gas yields, etc.).
3.1 Definitions of Terms Specific to This Standard:
3.1.1 fiber—a fragment or piece of plant tissue that retains a
6. Apparatus
recognizable cellular structure and is large enough to be
6.1 Sieve, standard ASTM 100 mesh (150 µm) (see Speci-
fication E11).
ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoiland
Rock and is the direct responsibility of Subcommittee D18.22 on Soil as a Medium 6.2 Drying Oven, capable of being set at 105°C 6 5°C.
for Plant Growth.
6.3 Balance, capable of measuring at least to the nearest
Current edition approved Jan. 1, 2008. Published February 2008. Originally
approved in 1991. Last previous edition approved in 2001 as D1997–91 (2001). milligram.
DOI: 10.1520/D1997-91R08E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM This test method is a modified version of one described in: Riley, J. L.,
Standards volume information, refer to the standard’s Document Summary page on “LaboratoryMethodsforTestingPeat,”OntarioPeatlandInventoryProject,Ontario
the ASTM website. Geological Survey Open File Report 5572, 1986, p. 21–22.
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D1997 − 91
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