Standard Guide for Preparation of Materials Used for the Collection and Preservation of Atmospheric Wet Deposition

SCOPE
1.1 This guide presents recommendations for the cleaning of plastic or glass materials used for collection of atmospheric wet deposition (AWD). This guide 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 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.

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Historical
Publication Date
09-Oct-2001
Current Stage
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ASTM D5012-01 - Standard Guide for Preparation of Materials Used for the Collection and Preservation of Atmospheric Wet Deposition
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Designation:D5012–01
Standard Guide for
Preparation of Materials Used for the Collection and
1
Preservation of Atmospheric Wet Deposition
This standard is issued under the fixed designation D 5012; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
3.1 Definitions:
1.1 This guide presents recommendations for the cleaning
of plastic or glass materials used for collection of atmospheric 3.1.1 For definitions of terms used in this guide, refer to
wet deposition (AWD). This guide also presents recommenda- Terminology D 1129.
tions for the preservation of samples collected for chemical 3.1.2 For definition of plastic refer to Terminology D 1695
analysis. and Terminology D 883.
1.2 ThematerialsusedtocollectAWDfortheanalysisofits 3.1.3 For definition of AWD (precipitation, meteorologi-
inorganic constituents and trace elements should be plastic. cal) refer to Terminology D 1356.
High density polyethylene (HDPE) is most widely used and is
4. Significance and Use
acceptable for most samples including samples for the deter-
4.1 Some chemical constituents of AWD are not stable and
mination of the anions of acetic, citric, and formic acids.
Borosilicate glass is a collection alternative for the determina- must be preserved before chemical analysis. Without sample
preservation, it is possible that analytes can be lost through
tion of the anions from acetic, citric, and formic acid; it is
recommended for samples for the determination of other decomposition or sorption to the storage bottles.
4.2 Contamination of AWD samples can occur during both
organic compounds.
1.3 This standard does not purport to address all of the sample preservation and sample storage. Proper selection and
cleaning of sampling containers are required to reduce the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- possibility of contamination of AWD samples.
4.3 The natural sponge and talc-free plastic gloves used in
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. the following procedures should be recognized as potential
sources of contamination. Individual experience should be
2. Referenced Documents
used to select products that minimize contamination.
2
2.1 ASTM Standards:
5. Apparatus
D 883 Terminology Relating to Plastics
5.1 Instruments shall be selected in accordance with an
D 1125 Test Methods for Electrical Conductivity and Re-
sistivity of Water applicable test method given in Test Methods D 1125.
5.2 The conductivity cell shall be pipet or dip type with a
D 1129 Terminology Relating to Water
D 1193 Specification for Reagent Water cell constant (K) of 0.1 .
D 1356 Terminology Relating to Sampling and Analysis of
6. Reagents and Materials
Atmospheres
6.1 Purity of Reagents—Reagent grade acids and other
D 1695 TerminologyofCelluloseandCelluloseDerivatives
chemicals shall be used to reduce the risk of contaminating the
D 2914 Test Methods for Sulfur Dioxide Content of the
AWD samples. Unless otherwise indicated, it is intended that
Atmosphere (West-Gaeke Method)
all reagents conform to the specifications of the Committee on
D 4453 Practice for Handling of Ultra-Pure Water Samples
Analytical Reagents of the American Chemical Society where
3
such specifications are available.
1
This guide 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.
3
Current edition approved Ocotober 10, 2001. Published December 2001. Reagent Chemicals, American Chemical Society Specifications, American
Originally published as D 5012 – 89. Last previous edition D 5012 – 94. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmaceutical Convention, Inc. (USPC), Rockville,
the ASTM website. MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5012–01
TABLE 1 Preservation of AWD Samples Collected for Inorganic Cation and Anion Determinations
Prese
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