EPA-NERL: 335.1: Cyanides, amenable to chlorination

Summary
Analytes
Revision
Data and Sites

Official Method Name

Cyanides, Amenable to Chlorination (Titrimetric; Spectrophotometric)

Current Revision

Issued 1974

Media

WATER

Instrumentation

Spectroscopy (Colorimetry; Photometry)

Method Subcategory

Inorganic

Method Source

EPA-NERL

Citation

Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020)

Brief Method Summary

A portion of sample is dechlorinated at pH > 11 to decompose cyanides amenable to chlorination (CATC). Cyanide levels in the chlorinated sample and unchlorinated sample are determined using a total cyanide procedure (e.g., EPA Method 335.2). CATC is determined by difference of cyanide concentrations in the unchlorinated and chlorinated sample.

Scope and Application

This method determines cyanides amenable to chlorination (CATC) in drinking, surface, and saline waters; domestic and industrial wastes.

Applicable Concentration Range

See EPA Method 335.2

Interferences

None given.

Quality Control Requirements

None given.

Sample Handling

None given.

Maximum Holding Time

None given.

Relative Cost

Less than $50

Sample Preparation Methods

This method has 1 analyte associated with it.

Analyte	Detection Level	Bias	Precision	Pct False Positive	Pct False Negative	Spiking Level
Available Cyanide(E-10275) Amenable cyanide Available Cyanide Cyanide amenable to chlorination	N/A	N/A	N/A

Precision Descriptor Notes:
Detection Level Note:

Revision	PDF/Link
Issued 1974

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EPA-NERL: 335.1: Cyanides, amenable to chlorination

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