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ASTM D5012-01(2013)

Current Reaffirmation

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

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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 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 and health practices and determine the applicability of regulatory limitations prior to 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.

SDO ASTM: ASTM International
Document Number D5012
Publication Date Oct. 1, 2013
Language en - English
Page Count 5
Revision Level 01(2013)
Supercedes
Committee D22.03
Publish Date Document Id Type View
Sept. 1, 2020 D5012-20 Revision
Oct. 10, 2001 D5012-01 Revision
Oct. 1, 2013 D5012-01R13 Reaffirmation
April 1, 2008 D5012-01R08 Reaffirmation
Oct. 10, 2001 D5012-89R94E01 Reaffirmation