EPA-NERL: 213.2:  Cadmium by GFAA

  • Summary
  • Analytes
  • Revision
  • Data and Sites
Official Method Name
 Cadmium (Atomic Absorption, Furnace Technique)
Current Revision
Issued 1978
Media
 WATER
Instrumentation
 Graphite Furnace-Atomic Absorption Spectrometer
Method Subcategory
 Inorganic
Method Source
  EPA-NERL
Citation
  Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020)
Brief Method Summary
 The sample is treated by an appropriate digestion procedure to ensure cadmium is in a detectable form (see EPA Method 200.0 for suggested digestion procedures). The digestate is then introduced into the furnace system with an appropriate matrix modifier, and cadmium levels are determined while using required background correction.
Scope and Application
 This method describes the procedure for determination of cadmium in water and wastewater by conventional non-platform graphite furnace atomic absorption spectrometry.
Applicable Concentration Range
 0.5 - 10 ug/L
Interferences
 (1) Molecular absorption can occur when components of the sample matrix volatilize during atomization resulting in broadband absorption. (2) Chemical and matrix interferences can occur, but may be mitigated by using matrix modifiers.
Quality Control Requirements
 See method manual
Sample Handling
 Sample solutions should contain 0.5% (v/v) HNO3.
Maximum Holding Time
Relative Cost
 $51 to $200
Sample Preparation Methods
 EPA 200.0
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