Main Title |
Influence of the Time of Acidification after Sample Collection on the Preservation of Drinking Water for Lead Determination. |
Author |
Miller, R. G. ;
Doerger, J. U. ;
Kopfler, F. C. ;
Stober, J. ;
Roberson, P. ;
|
CORP Author |
Health Effects Research Lab., Cincinnati, OH. |
Year Published |
1985 |
Report Number |
EPA/600/J-85/065; |
Stock Number |
PB86-118478 |
Additional Subjects |
Potable water ;
Metals ;
Lead(Metal) ;
Water analysis ;
Acidification ;
Trace elements ;
Field tests ;
Epidemiology ;
Concentration(Composition) ;
Chemical analysis ;
Sampling ;
Water pollution ;
Reprints ;
Water pollution detection ;
Flameless atomic absorption analysis ;
Heavy metals
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB86-118478 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
6p |
Abstract |
It has been suggested that to obtain accurate data for trace metal analysis of drinking water, immediate acidification at the time of collection is necessary. However, because of problems encountered by EPA in field operations and epidemiology studies, further investigation into this requirement was pursued. Drinking waters containing known concentrations of lead were acidified at different time intervals after collection. The water samples were then stored at room temperature for varying time intervals before analysis for lead. For each time period there were seven samples with three aliquots from each taken for analysis in duplicate by flameless Atomic Absorption Spectrophotometry (AAS). All samples that were acidified gave a higher lead value than those samples containing lead but were not acidified. There were lead recovery variabilities among the time periods studies, however, it was evident that acidification of water samples after collection could be delayed up to 14 days without any adverse effect on lead concentration data. |
Supplementary Notes |
Pub. in Analytical Chemistry 57, n6 p1020-1023 May 85. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Influence of the Time of Acidification after Sample Collection on the Preservation of Drinking Water for Lead Determination. |
PUB Date Free Form |
1985 |
Category Codes |
7D; 13B; 68D; 99A; 50B |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/11 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
603115735 |
Origin |
NTIS |
Type |
CAT |