USGS-NWQL: I-1312:  Density, dissolved, water by gravimetry

  • Summary
  • Analytes
  • Revision
  • Data and Sites
Official Method Name
Density, gravimetric
Current Revision
1985
Media
WATER
Instrumentation
Gravimetry
Method Subcategory
Inorganic
Method Source
  USGS-NWQL
Citation
Methods for the Determination of Inorganic Substances in Water and Fluvial Sediments, Techniques of Water-Resources Investigations of the United States Geological Survey, Book 5, Chapter A1 Edited by Marvin J. Fishman and Linda C. Friedman
Brief Method Summary
The density determination is based on the weight of a carefully measured volume of filtered sample at a given temperature. Densities are determined at 20oC, the same temperature at which volumetric glassware is calibrated.
Scope and Application
This method may be used to determine the density of any water from which the suspended sediment has been satisfactorily removed.
Applicable Concentration Range
None Provided.
Interferences
The only significant interference with this method is suspended sediment, which may usually be removed by filtration, centrifugation, or flocculation. Precautions should be taken to minimize evaporation during removal of sediment.
Quality Control Requirements
None.
Sample Handling
Container Description: 250 mL Polyethylene bottle. Treatment and Preservation: Filter through 0.45-um filter; using filtered sample to rinse containers.
Maximum Holding Time
180 days
Relative Cost
Unknown
Sample Preparation Methods