ASTM D2973-22
(Test Method)Standard Test Method for Total Nitrogen in Peat Materials
Standard Test Method for Total Nitrogen in Peat Materials
SIGNIFICANCE AND USE
5.1 Nitrogen content is important as it is one of the primary plant food elements necessary for plant growth. Nitrogen content of peat is necessary to make sure an adequate, but not excessive amount of fertility is supplied to the target plant. Nitrogen is present in peat as organic nitrogen, and therefore, does not release nitrogen to plants as quickly as chemical fertilizers. However, nitrogen from peat continues to be released for several years as the organic matter decomposes.
5.2 This information is particularly useful to people working in industries where plant health, sustainability, and viability are important.
Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself ensure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.
SCOPE
1.1 This test method covers a chemical test method for the determination of the mass percent of nitrogen in peat material.
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.
1.3.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.
1.4 Warning—Mercury has been designated by many regulatory agencies as a hazardous material that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable Safety Data Sheet (SDS) for additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D2973 − 22
Standard Test Method for
1
Total Nitrogen in Peat Materials
This standard is issued under the fixed designation D2973; 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* ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This test method covers a chemical test method for the
mendations issued by the World Trade Organization Technical
determination of the mass percent of nitrogen in peat material.
Barriers to Trade (TBT) Committee.
1.2 Units—The values stated in SI units are to be regarded
as standard. No other units of measurement are included in this 2. Referenced Documents
standard. 2
2.1 ASTM Standards:
1.3 All observed and calculated values shall conform to the D653 Terminology Relating to Soil, Rock, and Contained
guidelines for significant digits and rounding established in
Fluids
Practice D6026. D1193 Specification for Reagent Water
1.3.1 Theproceduresusedtospecifyhowdataarecollected/ D2974 Test Methods for Determining the Water (Moisture)
recorded or calculated in this standard are regarded as the Content, Ash Content, and Organic Material of Peat and
industry standard. In addition, they are representative of the Other Organic Soils
significant digits that generally should be retained. The proce- D3740 Practice for Minimum Requirements for Agencies
dures used do not consider material variation, purpose for Engaged in Testing and/or Inspection of Soil and Rock as
obtaining the data, special purpose studies, or any consider- Used in Engineering Design and Construction
ations for the user’s objectives; and it is common practice to D4753 Guide for Evaluating, Selecting, and Specifying Bal-
increase or reduce significant digits of reported data to be ances and Standard Masses for Use in Soil, Rock, and
commensuratewiththeseconsiderations.Itisbeyondthescope Construction Materials Testing
of this standard to consider significant digits used in analysis D6026 Practice for Using Significant Digits and Data Re-
methods for engineering design. cords in Geotechnical Data
1.4 Warning—Mercury has been designated by many regu-
3. Terminology
latory agencies as a hazardous material that can cause serious
3.1 Definitions:
medical issues. Mercury, or its vapor, has been demonstrated to
3.1.1 For definitions of common technical terms used in this
be hazardous to health and corrosive to materials. Caution
standard, refer to Terminology D653.
should be taken when handling mercury and mercury contain-
ing products. See the applicable Safety Data Sheet (SDS) for
4. Summary of Test Method
additional information. Users should be aware that selling
4.1 In general terms, the nitrogen is converted into ammo-
mercury and/or mercury containing products into your state or
nium salts by destructive digestion of the specimen with a hot,
country may be prohibited by law.
catalyzed mixture of concentrated sulfuric acid and potassium
1.5 This standard does not purport to address all of the
sulfate. These salts are subsequently decomposed in a hot
safety concerns, if any, associated with its use. It is the
alkaline solution from which the ammonia is recovered by
responsibility of the user of this standard to establish appro-
distillation and finally determined by acidimetric titration.
priate safety, health, and environmental practices and deter-
4.2 Specifically, a representative specimen is obtained from
mine the applicability of regulatory limitations prior to use.
a representative sample and is air dried following Method B of
1.6 This international standard was developed in accor-
D2974. A portion of the air dried specimen is put in a flask
dance with internationally recognized principles on standard-
alongwithmercuricoxide,potassiumsulfate,andsulfuricacid.
The flask is gradually heated to a boil. After boiling and
1
This test method is under the jurisdiction ofASTM Committee D18 on Soil and
Rock and is the direct responsibility of Subcommittee D18.22 on Media for Plant
2
Growth. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 15, 2022. Published June 2022. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1971. Last previous edition approved in 2016 as D2973–16. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D2973-22. the ASTM website.
*
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2973 − 16 D2973 − 22
Standard Test Method for
1
Total Nitrogen in Peat Materials
This standard is issued under the fixed designation D2973; 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*
1.1 This test method covers a chemical test method for the determination of the mass percent of nitrogen in peat material.
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.3 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice
D6026.
1.3.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as the industry
standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not
consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives;
and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations.
It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.
1.4 Warning—Mercury has been designated by many regulatory agencies as a hazardous material that can cause serious medical
issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Caution should be taken
when handling mercury and mercury containing products. See the applicable Safety Data Sheet (SDS) for additional information.
Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by
law.
1.5 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D653 Terminology Relating to Soil, Rock, and Contained Fluids
1
This test method is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.22 on Soil as a Medium Media
for Plant Growth.
Current edition approved July 1, 2016June 15, 2022. Published July 2016June 2022. Originally approved in 1971. Last previous edition approved in 20102016 as
ɛ1
D2973–10–16. . DOI: 10.1520/D2973-16.10.1520/D2973-22.
2
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2973 − 22
D1193 Specification for Reagent Water
D2974 Test Methods for Determining the Water (Moisture) Content, Ash Content, and Organic Material of Peat and Other
Organic Soils
D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in
Engineering Design and Construction
D4753 Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction
Materials Testing
D6026 Practice for Using Significant Digits and Data Records in Geotechnical Data
E145 Specification for Gravity-Convection and Forced-Ventilation Ovens
3. Terminology
3.1 Definitions:
3.1.1 For definitions of common technical terms used in this standard, refer to Terminology D653.
4. Summary of Test Method
4.1 In this method,general terms, the nitrogen is converted into ammonium salts by destructive digestion of the specimen with a
ho
...
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2973 − 22
Standard Test Method for
1
Total Nitrogen in Peat Materials
This standard is issued under the fixed designation D2973; 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* ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This test method covers a chemical test method for the
mendations issued by the World Trade Organization Technical
determination of the mass percent of nitrogen in peat material.
Barriers to Trade (TBT) Committee.
1.2 Units—The values stated in SI units are to be regarded
as standard. No other units of measurement are included in this
2. Referenced Documents
standard. 2
2.1 ASTM Standards:
1.3 All observed and calculated values shall conform to the
D653 Terminology Relating to Soil, Rock, and Contained
guidelines for significant digits and rounding established in Fluids
Practice D6026.
D1193 Specification for Reagent Water
1.3.1 The procedures used to specify how data are collected/ D2974 Test Methods for Determining the Water (Moisture)
recorded or calculated in this standard are regarded as the Content, Ash Content, and Organic Material of Peat and
industry standard. In addition, they are representative of the Other Organic Soils
significant digits that generally should be retained. The proce- D3740 Practice for Minimum Requirements for Agencies
dures used do not consider material variation, purpose for Engaged in Testing and/or Inspection of Soil and Rock as
obtaining the data, special purpose studies, or any consider- Used in Engineering Design and Construction
ations for the user’s objectives; and it is common practice to D4753 Guide for Evaluating, Selecting, and Specifying Bal-
increase or reduce significant digits of reported data to be ances and Standard Masses for Use in Soil, Rock, and
commensurate with these considerations. It is beyond the scope Construction Materials Testing
of this standard to consider significant digits used in analysis D6026 Practice for Using Significant Digits and Data Re-
methods for engineering design. cords in Geotechnical Data
1.4 Warning—Mercury has been designated by many regu-
3. Terminology
latory agencies as a hazardous material that can cause serious
3.1 Definitions:
medical issues. Mercury, or its vapor, has been demonstrated to
3.1.1 For definitions of common technical terms used in this
be hazardous to health and corrosive to materials. Caution
standard, refer to Terminology D653.
should be taken when handling mercury and mercury contain-
ing products. See the applicable Safety Data Sheet (SDS) for
4. Summary of Test Method
additional information. Users should be aware that selling
4.1 In general terms, the nitrogen is converted into ammo-
mercury and/or mercury containing products into your state or
nium salts by destructive digestion of the specimen with a hot,
country may be prohibited by law.
catalyzed mixture of concentrated sulfuric acid and potassium
1.5 This standard does not purport to address all of the
sulfate. These salts are subsequently decomposed in a hot
safety concerns, if any, associated with its use. It is the
alkaline solution from which the ammonia is recovered by
responsibility of the user of this standard to establish appro-
distillation and finally determined by acidimetric titration.
priate safety, health, and environmental practices and deter-
4.2 Specifically, a representative specimen is obtained from
mine the applicability of regulatory limitations prior to use.
a representative sample and is air dried following Method B of
1.6 This international standard was developed in accor-
D2974. A portion of the air dried specimen is put in a flask
dance with internationally recognized principles on standard-
along with mercuric oxide, potassium sulfate, and sulfuric acid.
The flask is gradually heated to a boil. After boiling and
1
This test method is under the jurisdiction of ASTM Committee D18 on Soil and
Rock and is the direct responsibility of Subcommittee D18.22 on Media for Plant
2
Growth. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 15, 2022. Published June 2022. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1971. Last previous edition approved in 2016 as D2973–16. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D2973-22. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive,
...
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