ASTM D5012-20
(Practice)Standard Practice for Preparation of Materials Used for the Collection and Preservation of Atmospheric Wet Deposition
Standard Practice for Preparation of Materials Used for the Collection and Preservation of Atmospheric Wet Deposition
SIGNIFICANCE AND USE
4.1 Some chemical constituents of AWD are not stable and must be preserved before chemical analysis. Without sample preservation, it is possible that analytes can be lost through decomposition or sorption to the storage bottles.
4.2 Contamination of AWD samples can occur during both sample preservation and sample storage. Proper selection and cleaning of sampling containers are required to reduce the possibility of contamination of AWD samples.
4.3 The natural sponge and talc-free plastic gloves used in the following procedures should be recognized as potential sources of contamination. Individual experience should be used to select products that minimize contamination.
SCOPE
1.1 This practice presents recommendations for the cleaning of plastic or glass materials used for collection of atmospheric wet deposition (AWD). This practice also presents recommendations for the preservation of samples collected for chemical analysis.
1.2 The materials used to collect AWD for the analysis of its inorganic constituents and trace elements should be plastic. High density polyethylene (HDPE) is most widely used and is acceptable for most samples including samples for the determination of the anions of acetic, citric, and formic acids. Borosilicate glass is a collection alternative for the determination of the anions from acetic, citric, and formic acid; it is recommended for samples for the determination of other organic compounds.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
1.5 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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Standards Content (Sample)
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: D5012 − 20
Standard Practice for
Preparation of Materials Used for the Collection and
1
Preservation of Atmospheric Wet Deposition
This standard is issued under the fixed designation D5012; 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 D1125 Test Methods for Electrical Conductivity and Resis-
tivity of Water
1.1 Thispracticepresentsrecommendationsforthecleaning
D1129 Terminology Relating to Water
of plastic or glass materials used for collection of atmospheric
D1193 Specification for Reagent Water
wet deposition (AWD). This practice also presents recommen-
D1356 Terminology Relating to Sampling and Analysis of
dations for the preservation of samples collected for chemical
Atmospheres
analysis.
D1695 Terminology of Cellulose and Cellulose Derivatives
1.2 ThematerialsusedtocollectAWDfortheanalysisofits
inorganic constituents and trace elements should be plastic.
3. Terminology
High density polyethylene (HDPE) is most widely used and is
3.1 Definitions:
acceptable for most samples including samples for the deter-
3.1.1 For definitions of terms used in this practice, refer to
mination of the anions of acetic, citric, and formic acids.
Terminology D1129.
Borosilicate glass is a collection alternative for the determina-
3.1.2 For definition of plastic, refer to Terminology D1695
tion of the anions from acetic, citric, and formic acid; it is
and Terminology D883.
recommended for samples for the determination of other
3.1.3 FordefinitionofAWD(precipitation,meteorological),
organic compounds.
refer to Terminology D1356.
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
4. Significance and Use
standard.
4.1 Some chemical constituents of AWD are not stable and
1.4 This standard does not purport to address all of the
must be preserved before chemical analysis. Without sample
safety concerns, if any, associated with its use. It is the
preservation, it is possible that analytes can be lost through
responsibility of the user of this standard to establish appro-
decomposition or sorption to the storage bottles.
priate safety, health, and environmental practices and deter-
4.2 Contamination of AWD samples can occur during both
mine the applicability of regulatory limitations prior to use.
sample preservation and sample storage. Proper selection and
1.5 This international standard was developed in accor-
cleaning of sampling containers are required to reduce the
dance with internationally recognized principles on standard-
possibility of contamination of AWD samples.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 4.3 The natural sponge and talc-free plastic gloves used in
mendations issued by the World Trade Organization Technical
the following procedures should be recognized as potential
Barriers to Trade (TBT) Committee. sources of contamination. Individual experience should be
used to select products that minimize contamination.
2. Referenced Documents
2
2.1 ASTM Standards:
5. Apparatus
D883 Terminology Relating to Plastics
5.1 Instruments shall be selected in accordance with an
applicable test method given in Test Methods D1125.
1
This practice is under the jurisdiction ofASTM Committee D22 on Air Quality
and is the direct responsibility of Subcommittee D22.03 on Ambient Atmospheres
5.2 The conductivity cell shall be pipet or dip type with a
and Source Emissions.
cell constant (K) of 0.1.
Current edition approved Sept. 1, 2020. Published September 2020. Originally
approved in 1989. Last previous edition approved in 2013 as D5012 – 01 (2013).
6. Reagents and Materials
DOI: 10.1520/D5012-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Purity of Reagents—Reagent grade acids and other
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
chemicals shall be used to reduce the risk of contaminating the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. AWD samples. Unless otherwise indicated, it is intended that
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5012 − 20
TABLE 1 Preservation of AWD Samples Collected for Inorganic Cation and Anion Determinations
Preservation Technique Speci
...
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: D5012 − 01 (Reapproved 2013) D5012 − 20
Standard GuidePractice for
Preparation of Materials Used for the Collection and
1
Preservation of Atmospheric Wet Deposition
This standard is issued under the fixed designation D5012; 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 guidepractice presents recommendations for the cleaning of plastic or glass materials used for collection of atmospheric
wet deposition (AWD). This guidepractice also presents recommendations for the preservation of samples collected for chemical
analysis.
1.2 The materials used to collect AWD for the analysis of its inorganic constituents and trace elements should be plastic. High
density polyethylene (HDPE) is most widely used and is acceptable for most samples including samples for the determination of
the anions of acetic, citric, and formic acids. Borosilicate glass is a collection alternative for the determination of the anions from
acetic, citric, and formic acid; it is recommended for samples for the determination of other organic compounds.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
1.5 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:
D883 Terminology Relating to Plastics
D1125 Test Methods for Electrical Conductivity and Resistivity of Water
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D1695 Terminology of Cellulose and Cellulose Derivatives
D2914 Test Methods for Sulfur Dioxide Content of the Atmosphere (West-Gaeke Method)
D4453 Practice for Handling of High Purity Water Samples
1
This guidepractice is under the jurisdiction of ASTM Committee D22 on Air Quality and is the direct responsibility of Subcommittee D22.03 on Ambient Atmospheres
and Source Emissions.
Current edition approved Oct. 1, 2013Sept. 1, 2020. Published October 2013September 2020. Originally approved in 1989. Last previous edition approved in 20082013
as D5012 – 01 (2008).(2013). DOI: 10.1520/D5012-01R13.10.1520/D5012-20.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5012 − 20
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this guide,practice, refer to Terminology D1129.
3.1.2 For definition of plastic, refer to Terminology D1695 and Terminology D883.
3.1.3 For definition of AWD ( (precipitation, meteorological),precipitation, meteorological), refer to Terminology D1356.
4. Significance and Use
4.1 Some chemical constituents of AWD are not stable and must be preserved before chemical analysis. Without sample
preservation, it is possible that analytes can be lost through decomposition or sorption to the storage bottles.
4.2 Contamination of AWD samples can occur during both sample preservation and sample storage. Proper selection and cleaning
of sampling containers are required to reduce the possibility of contamination of AWD samples.
4.3 The natural sponge and talc-free plastic gloves used in the following procedures should be recognized as potential sources of
contamination. Individual experience should be used to select products that minimize contamination.
5. Apparatus
5.1 Instruments shall be selected in accordance with an applicable test method given in Test Me
...
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