EPA Method 208.2


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EPA Method 208.2:
Barium by Graphite Furnace AA. Official Name: Barium (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 barium by graphite furnace atomic absorption spectrometry. Sample 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:
(A)Halide Acids: Avoid the use of halide acids.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:
10-200 ug/L (optimal range).

Sample Prep:
200

Precision:
Precision and accuracy values were determined using data from the analyses of fortified tap water. A 1:10 dilution was required to bring the samples into range. Values at 1000 ug/L Ba are available in the method.

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

Revision Number:
Issued 1978

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Examples:  8260
TO-15

Examples:  Dioxin
Mercury
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