ASTM D7938 - 15 - Standard Practice for Sampling of C-14 in Gaseous Effluents

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ASTM D7938 - 15

Standard Practice for Sampling of C-14 in Gaseous Effluents

Status : Current   Published : December 2015



1.1 The intended use of this practice is for sampling of gasses containing 14C in inorganic, organic or particulate forms. This sampling practice captures the 14C in a media that can be submitted to a laboratory for analysis, typically by liquid scintillation counting (LSC)

1.2 This practice does not include the needed steps for the liberation of 14C from the media on which it was adsorbed or those for the preparation for LSC sample preparation in the laboratory prior to liquid scintillation analysis. This practice does not include the methodology used to analyze the prepared samples by LSC.

1.3 The overall 14C analytical detection capability is impacted by a number of factors including the volume sampled, the method used to desorb the 14C from the media, and the analytical method used the measure 14C from the media. This practice only directly addresses the volume of the gas stream from which any present 14C would be adsorbed.

1.4 The values stated in pCi units are to be regarded as standard given the reporting requirements of the U.S. NRC Regulatory Guide 1.21. The Bq values given in parenthesis are mathematical conversions to SI units that are provided for information only and are not considered standard. Other values stated in SI units are to be regarded as standard.

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

Standard NumberASTM D7938 - 15
TitleStandard Practice for Sampling of C-14 in Gaseous Effluents
Publication Date15 December 2015
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors C-14, Gaseous effluents, Inorganic sup14/supC, Organic sup14/supC
File Size144 KB

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