EPA Method 202.2


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EPA Method 202.2:
Aluminum by Graphite Furnace AA. Official Name: Aluminum (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 aluminum 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) Dissolved solids: Use background correction as high dissolved solids are present.(B) Chloride and nitrogen: Chloride ion and nitrogen can suppress the aluminum signal. Avoid the use of halide acids and nitrogen purge gas.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:
20-200 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

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Examples:  8260
TO-15

Examples:  Dioxin
Mercury
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