Main Title |
Test Procedure for Gross Alpha Particle Activity in Drinking Water: Interlaboratory Collaborative Study. |
Author |
Whittaker, E. L. ;
|
CORP Author |
Lockheed Engineering and Management Services Co., Inc., Las Vegas, NV.;Environmental Monitoring Systems Lab., Las Vegas, NV. |
Year Published |
1986 |
Report Number |
EPA-68-03-3249; EPA/600/4-86/027; |
Stock Number |
PB86-236957 |
Additional Subjects |
Radioactivity ;
Standards ;
Drinking water ;
Alpha particles ;
Radioassay ;
Counting techniques ;
Thorium 230 ;
Radium 226
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB86-236957 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
64p |
Abstract |
Gross alpha activity values were calculated with four different alpha emitting radionuclide standard counting efficiencies to see which standard was best for gross alpha activity determinations. Thorium-230, a pure alpha emitter, appeared to be the best standard for gross alpha counting efficiency. A secondary purpose in the study was to see how well the Ra-226 concentration of a drinking water sample could be estimated from an early gross alpha count subtracted from a late gross alpha count and calculated from the equation provided in the test procedure. The method for gross alpha particle concentration measurement eliminates the dissolved solids interference problem (which is a significant problem for the EPA approved method) and provides for greater sensitivity by allowing for the use of much larger samples in the analysis. |