| Main Title |
Ion and Temperature Dependence of Electrical Conductance for Natural Waters. |
| Author |
Sorensen, J. A. ;
Glass, G. E. ;
|
| CORP Author |
Minnesota Univ.-Duluth. Dept. of Chemistry.;Environmental Research Lab.-Duluth, MN. |
| Year Published |
1987 |
| Report Number |
EPA-R-809412; EPA/600/J-87/138; |
| Stock Number |
PB88-148200 |
| Additional Subjects |
Electrical resistance ;
Water quality ;
Temperature ;
Ion density(Concentration) ;
Aqueous electrolytes ;
Empirical equations ;
Lakes ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB88-148200 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
6p |
| Abstract |
Four empirical equations describing the temperature dependence of electrical conductance of aqueous solutions are compared for the case of single electrolytes. The best method uses a modified Walden product where the log of the ratio between the conductances at two temperatures is assumed to be proportional to the log of the corresponding ratio of viscosities, that is, log (X(sub t sub 1)/X(sub t sub 2)) = K log (eta (sub t sub 2)/eta (sub t sub 1)). A basis for predicting the constant of proportionality for mixed systems given the ion concentrations is proposed and the dependence of ionic strength effects and ion association is discussed. The value of K may also be estimated from the hydrogen ion concentration (in micromoles per liter) where K = 0.941 - 0.00639(H(1+)) as found by regression of data for 692 lakes. A case study of time trend data for lakes is presented. (Copyright (c) 1987 by the American Chemical Society.) |
| Supplementary Notes |
Pub. in Analytical Chemistry, v59 n13 p1594-1597 Jul 87. Sponsored by Environmental Research Lab.-Duluth, MN. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Ion and Temperature Dependence of Electrical Conductance for Natural Waters. |
| PUB Date Free Form |
c1987 |
| Category Codes |
68D; 99A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/03 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
808420106 |
| Origin |
NTIS |
| Type |
CAT |
