ASTM-D6888 2004

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D6888-04 Standard Test Method for Available Cyanide with Ligand Displacement and Flow Injection Analysis (FIA) Utilizing Gas Diffusion Separation and Amperometric Detection

Published By	Publication Date	Number of Pages
ASTM	2004	7

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Categories: 17.120.10 - Flow in closed conduits, ASTM

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Description

1.1 This method is used to determine the concentration of available inorganic cyanide in an aqueous wastewater or effluent. The method detects the cyanides that are free (HCN and CN ^– ) and metal-cyanide complexes that are easily dissociated into free cyanide ions. The method does not detect the less toxic strong metal-cyanide complexes, cyanides that are not ‘amenable to chlorination.’

1.2 Total cyanide can be determined for samples that have been distilled as described in Test Methods D 2036, Test Method A, Total Cyanides after Distillation. The cyanide complexes are dissociated and absorbed into the sodium hydroxide capture solution, which can be analyzed with this test method; therefore, ligand exchange reagents from sections 8.12 and 8.13 would not be required when determining total cyanide after distillation.

1.3 This procedure is applicable over a range of approximately 2 to 400 ?g/L (parts per billion) available cyanide. Higher concentrations can be analyzed by dilution or lower injection volume.

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. Specific hazard statements are given in Note 2 and Section 9.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method
2	Significance and Use Interferences Apparatus FIG. 1
3	Reagents and Materials FIG. 2 TABLE 1
4	Hazards Sample and Sample Preservation Elimination of Interferences
5	Calibration and Standardization Procedure Data Analysis and Calculations Precision and Bias
6	Quality Assurance and Quality Control FIG. 3 TABLE 2
7	Keywords

Additional information

Standard Title	D6888-04 Standard Test Method for Available Cyanide with Ligand Displacement and Flow Injection Analysis (FIA) Utilizing Gas Diffusion Separation and Amperometric Detection
Published Code	ASTM
Publication Date	2004
Pages Count	7
ICS Codes	17.120.10 - Flow in closed conduits

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ASTM-D6888 2004

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