EPA Method 218.2


ALS - Columbia offers EPA Method 218.2 testing at these laboratories:

Kelso Kelso, Washington Laboratory

Method information displayed is provided for informational purposes only. No warranty (express or implied) is made as to the website accuracy, completeness, or applicability (such as the age of a method and whether or not it applies to your project). Please contact us for assistance. Analytical testing dots

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EPA Method 218.2:
Chromium by Graphite Furnace AA. Official Name: Chromium (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 chromium 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 to prevent error from high dissolved solid levels.(B) Contamination: Pipette tips may contaminate samples.(C) Cyanide: Nitrogen gas should be avoided because of possible cyanide band interference.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:
5-100 ug/L (optimal concentration).

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

Test Description:
Chromium, total - AA

Report Number:
600/4-79-020

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Examples:  8260
TO-15

Examples:  Dioxin
Mercury
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