NEMI Method Summary


Method Summary Information

Method Number:

I-3753

Media:

WATER

Revision:

1985

Method Source:

U.S. Geological Survey (USGS)

Subcategory:

INORGANIC

Analytes in this method

Official Name:

Solids, volatile-on-ignition, total, gravimetric

Descriptive Name

Solids, volatile-on-ignition, total, gravimetric

Source Info:

USGS Branch of Information Services
Box 25286, MS 417
Federal Center
Denver, CO 80225-0286
Phone: 303-202-4700

Citation:

USGS Methods, Volume A1

114049

Byte file

Brief Method
Summary:

A measured volume of well-mixed, unfiltered sample is evaporated to dryness. The residue is dried at 105 ^oC for 2.0 h, cooled in a desiccator, and immediately weighed. See solids, total (method I-3750). The residue is then ignited at 550 ^oC and weighed, the difference in weight representing total volatile solids.

Scope And
Application:

This method may be used to analyze any natural, treated, or industrial water and other waste.

Applicable
Conc Range:

Interferences:

Care must be taken to ensure that a representative sample is provided. Usually, large, floating particles are excluded from the sample.
Because of the great variability in the nature of the compounds that can be present in the sample, particularly in samples of industrial and other wastes, the determination can be considered only an approximation of the amount of volatile material present. Much of the volatile material may have been released during the determination of total residue. Moreover, ignition at 550 ^oC certainly volatilizes water of hydration from the hydrated salts present.

QC Requirements:

Laboratory Blanks (LB)

Sample Handling:

Container Description: 250 or 500 mL polyethylene bottle.
Handling and Treatment: Use unfiltered sample to rinse bottle.

Max Holding Time:

Relative Cost:

Less than $50

5494

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Method Summary Information