EPA Method 213.2

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EPA Method 213.2:
Cadmium by GFAA. Official Name: Cadmium (Atomic Absorption, Furnace Technique)

Summary:
The sample is treated by an appropriate digestion procedure to ensure cadmium is in a detectable form (see EPA Method 200.0 for suggested digestion procedures). The digestate is then introduced into the furnace system with an appropriate matrix modifier, and cadmium levels are determined while using required background correction.

Scope:
This method describes the procedure for determination of cadmium in water and wastewater by conventional non-platform graphite furnace atomic absorption spectrometry.

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

Interferences:
(1) Molecular absorption can occur when components of the sample matrix volatilize during atomization resulting in broadband absorption. (2) Chemical and matrix interferences can occur, but may be mitigated by using matrix modifiers.

QC Requirements:
See method manual

Media:
WATER

Subcategory:
Inorganic

Concentration:
0.5 - 10 ug/L

Sample Prep:
EPA 200.0

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

Detection:
Detection limit from method (optimum concentration range begins at 5 times this level).

Revision Number:
Issued 1978

Test Description:
Cadmium - AA, Furnac

Report Number:
600/4-79-020