EPA Method 210.1


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EPA Method 210.1:
Beryllium by Flame AA. Official Name: Beryllium (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 beryllium 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:
(A) Sodium and Silicon: Sodium and silicon concentrations in excess of 1000 mg/L severely depress beryllium absorbance.(B) Bicarbonate ion: Bicarbonate ion can interfere, but is eliminated when samples are acidified to pH of 1.5.(C) Aluminum: Aluminum at 500 ug/L can depress the sensitivity of beryllium.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:
50-2,000 ug/L (optimal range); 25 ug/L (sensitivity).

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 1974

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Examples:  8260
TO-15

Examples:  Dioxin
Mercury
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