EPA Method 286.1

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EPA Method 286.1:
Vanadium by Flame AA. Official Name: Vanadium (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 determine vanadium 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. High concentrations of aluminum and titanium increase the sensitivity of vanadium. This can be controlled by adding excess aluminum to both samples and standards.

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); 0.8 mg/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