Record Display for the EPA National Library Catalog


Main Title Determination of Soluble Mineral Content Using Electrical Conductivity Measurements.
Author Karakouzian, M. ; Pitchford, A. M. ; Leonard, M. ; Johnson, B. ;
CORP Author Environmental Protection Agency, Las Vegas, NV. National Exposure Research Lab. ;Nevada Univ., Las Vegas.
Publisher 1997
Year Published 1997
Report Number EPA/600/A-97/064;
Stock Number PB97-195564
Additional Subjects Mineral composition ; Soil chemistry ; Electrical conductivity ; Arid climates ; Saline soils ; Salts ; Solubility ; Soil chemical properties ; Soil physical properties ; Dissolved solids ; Leachate ; Test methods ; Detection ; Soil mechanics ; Salt content
Library Call Number Additional Info Location Last
NTIS  PB97-195564 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
One of the ways to estimate soluble salt content is to measure the electrical conductivity of the leachate and correlate the conductivity with the dissolved solid in solution. If specimens are leached with an insufficient amount of water, some of the salt present in the soil may not dissolve, causing the amount of soluble salts to be underestimated. Electrical conductivity measurements also can be used to detect this condition and water can be added until an unsaturated solution is obtained. Then the volume of water used to determine soluble salt content can be adjusted accordingly. Using this approach, five different soils from Las Vegas, NV, were evaluated over a series of water-soil dilution ratios from 2:1 to 100:1. In two cases, the 2:1 dilution was adequate, but for the other three, it was not. This illustrates the importance of using an unsaturated dilution for determining soluble salt content.