EPA-NERL: 273.1:  Sodium by Flame AA

  • Summary
  • Analytes
  • Revision
  • Data and Sites
Official Method Name
 Sodium (Atomic Absorption, Direct Aspiration)
Current Revision
Issued 1971; Editorial Revision 1974
Media
 WATER
Instrumentation
 Flame Atomic Absorption
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
 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 and Application
 This method determines sodium by flame atomic absorption spectrometry. Sample pretreatment according to EPA Method 200.0 determines the applicability.
Applicable Concentration Range
 0.03 - 1.0 mg/L (optimal range); 0.015 mg/L (sensitivity).
Interferences
 For interferences see EPA Method 200.0. Low-temperature flames increase sensitivity by reducing ionization of this metal. Potassium may also be added to control ionization.
Quality Control Requirements
 QC requirements for drinking water procedures are provided in method 200.0
Sample Handling
 Sample handling and preservation procedures are provided in EPA Method 200.0.
Maximum Holding Time
 6 months (MCAWW, Table 1).
Relative Cost
 Less than $50
Sample Preparation Methods
 200.0
WHO WE ARE
  • NWQMC
  • USGS
  • EPA
LEGAL