Standard Test Method for Determination of Free Cyanide in Water and Wastewater by Microdiffusion

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

05-13-2022

Publisher

American Society for Testing and Materials

1.1This test method covers the determination of free cyanides in waters and wastewaters. Free cyanide is here defined as the cyanide which diffuses as cyanide (HCN), at room temperature, from a solution at pH 6.2

1.2This test method does not include complexes that resist dissociation, such as hexacyanoferrates and gold cyanide, nor does it include thiocyanate and cyanohydrin.

1.3This test method may be applied to water and wastewater samples containing free cyanide from 10 to 150 μg/L. Greater concentrations may be determined by appropriate dilution.

1.4This test method has been fully validated by collaborative testing as specified by Practice D2777.

1.5The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 8.6, 8.9, Section 9, and 12.2.1.

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.

Committee	D 19
DocumentType	Test Method
Pages	6
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM D 4282 : 2015

ASTM D 7728 : 2018	Standard Guide for Selection of ASTM Analytical Methods for Implementation of International Cyanide Management Code Guidance
ASTM D 3694 : 1996 : R2017	Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents

ASTM D 1129 : 2013 : R2020	Standard Terminology Relating to Water
ASTM D 1129 : 2013 : R2020 : EDT 2	Standard Terminology Relating to Water
ASTM D 2777 : 2021	Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 2777 : 2013	Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 1129 : 2013 : R2020 : EDT 1	Standard Terminology Relating to Water
ASTM D 5847 : 2002 : R2020	Standard Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
ASTM D 5847 : 2022	Standard Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
ASTM D 3856 : 2011 : R2015	Standard Guide for Management Systems in Laboratories Engaged in Analysis of Water (Withdrawn 2024)