EPA Method 272.2

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EPA Method 272.2:
Silver by Graphite Furnace AA. Official Name: Silver (Atomic Absorption, Furnace Technique)

Summary:
A sample prepared according to EPA Method 200.0 is analyzed using a graphite furnace atomic absorption spectrometer. Specifications for instrument operation and preparation of standards are provided in the method.

Scope:
This method determines silver by graphite furnace atomic absorption spectrometry. Samples pretreatment according to EPA Method 200.0 determines the applicability.

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

Interferences:
Background correction may be required if the sample contains high dissolved solids.The use of halide acids should be avoided.For additional interferences see EPA Method 200.0.

QC Requirements:
QC requirements for drinking water procedures are provided in method 200.0

Maximum Holding Time:
6 months (MCAWW, Table 1).

Media:
WATER

Subcategory:
Inorganic

Concentration:
1-25 ug/L (optimal range).

Sample Prep:
200

Precision:
Precision and accuracy values were calculated using interlaboratory data from EPA-managed Water Pollution (WP) performance evaluation studies.

Detection:
The DL is to be considered the minimum working limit achievable with this method.

Revision Number:
Issued 1978

Test Description:
Silver - AA, Furnace

Report Number:
600/4-79-020