EPA Method 252.1

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EPA Method 252.1:
Osmium by Flame AA. Official Name: Osmium (Atomic Absorption, Direct Aspiration)

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

Scope:
This method determines osmium by flame 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:
For 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:
2-100 mg/L (optimal range); 1.0 mg/L (sensitivity).

Sample Prep:
200

Precision:
Precision and accuracy data are not available.

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

Revision Number:
Issued 1976; Technical Revision 1978