NEMI Method Summary


Method Summary Information

Method Number:

310.1

Media:

WATER

Revision:

Issued 1971; Editorial Revision 1978

Method Source:

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

Analytes in this method

Subcategory:

INORGANIC

Official Name:

Alkalinity (Titrimetric, pH 4.5)

Descriptive Name

Alkalinity by Titration

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)

66013

Byte file

Brief Method
Summary:

An unaltered sample is titrated to an electrometrically determined end point of pH 4.5. The sample must not be filtered, diluted, concentrated, or altered in any way.

Scope And
Application:

This method is applicable to drinking, surface, and saline waters; domestic and industrial wastes. The method is suitable for all concentration ranges of alkalinity; however appropriate aliquots should be used to avoid a titration volume greater than 50mL.

Applicable
Conc Range:

Not Available.

Interferences:

Substances, such as salts of weak organic and inorganic acids present in large amounts, may cause interference in the electrometric pH measurements.

QC Requirements:

None.

Sample Handling:

The sample should be refrigerated at 4^oC and run as soon as practical. Do not open sample bottle before analysis.

Max Holding Time:

14 days.

Sample Prep Met

None.

Relative Cost:

Less than $50

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Method Summary Information