ASTM E2838-21

5.1?This is a performance-based method, and modifications are allowed to improve performance.

5.2?TDG is a Schedule 2 compound under the Chemical Weapons Convention (CWC).5.3?This method has been investigated for use on surface wipes. TDG is also a human metabolite resulting from sulfur mustard exposure but this method has not been investigated for such determinations.

1.1?This procedure details the determination of thiodiglycol (TDG), also known as 2,2-thiobis-ethanol, on wipes with 3,3-thiodipropanol (TDP) as the surrogate. This method is based upon solvent extraction of wipes by either sonication or a pressurized fluid extraction (PFE) technique as an alternative option. The extract is filtered, concentrated, and analyzed by liquid chromatography/tandem mass spectrometry (LC/MS/MS). TDG is qualitatively and quantitatively determined.

1.2?UnitsThe values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3?The method detection limit (MDL)2 and reporting range1.4?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.