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Sawyer Environmental Chemistry Research Lab

Instruments - Analytical

OI Analytical ALPKEM Flow Solution IV Auto-Analyzer

Composed of:

  • Extended-range detector
  • Two segmented flow analytical cartridges
  • Two flow injection analytical cartridges
  • Model 502 peristaltic pump
  • 270 site RA autosampler
  • Winflow software (Version 4.03)

The ALPKEM applies flow analysis techniques to ion analysis. This involves aspirating samples, adding reagents, measuring ion concentrations, and processing results all in one continuous process. The extended range detection allows analysis in a range of ppb to ppm.

Current Applications:

  • Ammonium
  • Total Nitrogen
  • Nitrate + Nitrite
  • Nitrite-N

Sample Matrices:

  • Soil and Sediment extracts
  • Fresh water
  • Vegetation digests
  • Salt water

Related Methods:

  • Standard Methods for the Examination of Water And Wastewater, 18th edition, copyright 1992. Method 4500-NH3-N.
  • Handbook of Methods for Acidic Deposition Studies, Laboratory Analysis for Surface Water Chemistry. EPA 600/4-87/026, 1987.



Sawyer Environmental Chemistry Research Laboratory
5764 Sawyer Research Center
The University of Maine, Orono, ME 04469
Phone: (207) 581-3288 | Fax: (207) 581-3290

The University of Maine
, Orono, Maine 04469
A Member of the University of Maine System