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ASTM D7365-07

Historical Revision

Standard Practice for Sampling, Preservation and Mitigating Interferences in Water Samples for Analysis of Cyanide

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1.1 This practice is applicable for the collection and preservation of water samples for the analysis of cyanide. This practice also addresses the mitigation of known interferences prior to the analysis of cyanide.

1.2 The sampling, preservation and mitigation of interference procedures described in this practice are recommended for the analysis of total cyanide, available cyanide, weak acid dissociable cyanide, and free cyanide by Test Methods D 2036, D 4282, D 4374, D 6888, D 6994, and D 7237. This practice can also be applied to other cyanide methods, for example, US EPA Method 335.4 and Standard Methods 4500-CN- C.

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.


Cyanide is routinely analyzed in water samples, often to demonstrate regulatory compliance; however, improper sample collection or pretreatment can result in significant positive or negative bias potentially resulting in unnecessary permit violations or undetected cyanide releases into the environment.

SDO ASTM: ASTM International
Document Number D7365
Publication Date Aug. 1, 2007
Language en - English
Page Count 8
Revision Level 07
Supercedes
Committee D19.06
Publish Date Document Id Type View
Oct. 1, 2009 D7365-09A Revision
Feb. 15, 2009 D7365-09 Revision
Aug. 1, 2007 D7365-07 Revision
May 1, 2022 D7365-09AR22 Reaffirmation
July 15, 2015 D7365-09AR15 Reaffirmation