NEMI Method Summary


Method Summary Information

Method Number:

335.1

Media:

WATER

Revision:

Issued 1974

Method Source:

U.S. EPA National Exposure Research Laboratory (NERL) [formerly EMSL]

Analytes in this method

Subcategory:

INORGANIC

Official Name:

Cyanides, Amenable to Chlorination (Titrimetric; Spectrophotometric)

Descriptive Name

Cyanides, amenable to chlorination

Source Info:

U.S.EPA National Exposure Research Laboratory (NERL)
Microbiological and Chemical Exposure Assessment Research Division (MCEARD)
[formerly the Environmental Monitoring Systems Laboratory (EMSL), Cincinnati, OH]
26 West Martin Luther King Drive
Cincinnati, Ohio 45268-0001
Fax: 513-569-7757
email: DWmethods.help@epa.gov

Citation:

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

16206

Byte file

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
Conc Range:

See EPA Method 335.2

Interferences:

None given.

QC Requirements:

None given.

Sample Handling:

None given.

Max Holding Time:

None given.

Relative Cost:

Less than $50

4869

Page 1

Method Summary Information