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    ASTM D2036 - 09(2015)

    Standard Test Methods for Cyanides in Water

    Active Standard ASTM D2036 | Developed by Subcommittee: D19.06

    Book of Standards Volume: 11.02

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    Significance and Use

    5.1 Cyanide is highly toxic. Regulations have been established to require the monitoring of cyanide in industrial and domestic wastes and in surface waters (Appendix X1).

    5.2 Test Method D is applicable for natural water and clean metal finishing or heat treatment effluents. It may be used for process control in wastewater treatment facilities providing its applicability has been validated by Test Method B or C.

    5.3 The spot test outlined in Annex A1 can be used to detect cyanide and thiocyanate in water or wastewater, and to approximate its concentration.

    1. Scope

    1.1 These test methods cover the determination of cyanides in water. The following test methods are included:



    Test Method A
     Total Cyanides after Distillation

    12 – 18

    Test Method B
     Cyanides Amenable to Chlorination2
     by Difference

    19 – 25

    Test Method C
     Weak Acid Dissociable Cyanides

    26 – 32

    Test Method D
     Cyanides Amenable to Chlorination without
     Distillation (Short-Cut Method)

    33 – 39

    1.2 Cyanogen halides may be determined separately.

    Note 1: Cyanogen chloride is the most common of the cyanogen halide complexes as it is a reaction product and is usually present when chlorinating cyanide-containing industrial waste water. For the presence or absence of CNCl, the spot test method given in Annex A1 can be used.

    1.3 These test methods do not distinguish between cyanide ions and metallocyanide compounds and complexes. Furthermore, they do not detect the cyanates. Cyanates can be determined using ion chromatography without digestion.

    Note 2: The cyanate complexes are decomposed when the sample is acidified in the distillation procedure.

    1.4 The cyanide in cyanocomplexes of gold, platinum, cobalt and some other transition metals is not completely recovered by these test methods. Refer to Test Method D6994 for the determination of cyanometal complexes.

    1.5 Cyanide from only a few organic cyanides are recovered, and those only to a minor extent.

    1.6 Part or all of these test methods have been used successfully with reagent water and various waste waters. It is the user's responsibility to assure the validity of the test method for the water matrix being tested.

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

    1.8 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 5.1, 8.8, 8.18, Section 9, 11.3, and 16.1.9.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1129 Terminology Relating to Water

    D1193 Specification for Reagent Water

    D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water

    D3370 Practices for Sampling Water from Closed Conduits

    D5788 Guide for Spiking Organics into Aqueous Samples

    D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis

    D6696 Guide for Understanding Cyanide Species

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

    D6994 Test Method for Determination of Metal Cyanide Complexes in Wastewater, Surface Water, Groundwater and Drinking Water Using Anion Exchange Chromatography with UV Detection

    D7284 Test Method for Total Cyanide in Water by Micro Distillation followed by Flow Injection Analysis with Gas Diffusion Separation and Amperometric Detection

    D7365 Practice for Sampling, Preservation and Mitigating Interferences in Water Samples for Analysis of Cyanide

    D7511 Test Method for Total Cyanide by Segmented Flow Injection Analysis, In-Line Ultraviolet Digestion and Amperometric Detection

    E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry

    E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers

    ICS Code

    ICS Number Code 13.060.50 (Examination of water for chemical substances)

    UNSPSC Code

    UNSPSC Code

    Referencing This Standard

    DOI: 10.1520/D2036-09R15

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D2036-09(2015), Standard Test Methods for Cyanides in Water, ASTM International, West Conshohocken, PA, 2015,

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