ASTM D 2010/D2010M : 1998 : R2017
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Methods for Evaluation of Total Sulfation Activity in the Atmosphere by the Lead Dioxide Technique
Hardcopy , PDF
06-12-2024
English
01-05-2017
CONTAINED IN VOL. 11.03, 2017 Specifies the evaluation of the total sulfation activity in the atmosphere.
Committee |
D 22
|
DocumentType |
Test Method
|
Pages |
6
|
ProductNote |
Reconfirmed 2017
|
PublisherName |
American Society for Testing and Materials
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
1.1These test methods describe the evaluation of the total sulfation activity in the atmosphere. Because of its oxidizing power, lead dioxide (PbO2) converts not only sulfur dioxide (SO2), but other compounds, such as mercaptans and hydrogen sulfide, into sulfate. It fixes sulfur trioxide and sulfuric acid mist present in the atmosphere (see Note 1).
1.2Test Method A describes the use of a PbO2 candle, and Test Method B describes that of a PbO2 sulfation plate.2
1.3These test methods provide a weighted average effective SO2 level for a 30-day interval.
1.4The results of these test methods correlate approximately with volumetric SO2 concentrations, although the presence of dew or condensed moisture tends to enhance the capture of SO2 onto the candle or plate.
1.5The values stated in SI units shall be regarded as the standard. The values given in brackets are for information only and may be approximate.
Note 1:It has been shown that the rate constant of the chemical reaction between SO2 and PbO2 is independent of the concentration of SO2 up to levels of 1000 ppm(v), if 15 % or less of the PbO2 has been reduced (1).3 15 % of the PbO2 is equivalent to 11 to 12 mg of SO2/cm2 per day.
1.6This 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. For specific precautionary statements, see Section 8.
1.7This 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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