| Main Title |
Polyphosphate water-treatment products: their effects on the chemistry and solubility of lead in potable water systems {microform} / |
| Author |
Holm, Thomas R.;
Smothers, S. H.;
Xiaofeng, Z.;
Schock, R. R.
|
| CORP Author |
Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. ;Illinois State Water Survey Div., Champaign. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Risk Reduction Engineering Laboratory, |
| Place Published |
Cincinnati, OH : |
| Year Published |
1991 |
| Report Number |
EPA/600/D-91/057 |
| Stock Number |
PB91-182709 |
| OCLC Number |
45702824 |
| Subjects |
Potable water;
Lead(Metal);
Complex ions;
Mathematical models;
Water pollution;
Water chemistry;
Phosphorus polymers;
Water treatment;
Water softening;
Toxic substances;
Solubility;
Chemical equilibrium;
Plumbing;
Corrosion inhibitors;
Reprints
|
| Holdings |
| Library |
|
Call Number |
Additional Info |
Location |
Date Modified |
| ERBD |
|
PB91-182709 |
|
NERL/ESD-LV Library/Las Vegas,NV |
01/13/2001 |
| NTIS |
|
PB91-182709 |
Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. |
NTIS |
01/01/1988 |
|
| Edition |
"Contract report 579." |
| Collation |
16 p. : ill. ; 28 cm. |
| Abstract |
Three commercial polyphosphate-containing water treatment products were evaluated for their ability to affect lead solubility in drinking water. A 'Competing-Ligand Spectrophotometry' Technique was used to characterize Pb(2+) complexation at 20 degrees C in ionic strength of 0.1, pH = 8, and calcium concentration of .001 mol/L. The pH was buffered by HEPES, and the colorimetric reagent was 4-(2-pyridylazo)-resourcinol (PAR). Results were also compared to a DPASV method. The data was fit by a 2- ligand model. The experiments suggested a significant ability to enhance lead solubility by complexation at the pH and hardness tested. |
| Notes |
"Michael R. Schock, project officer." "EPA/600/D-91/057." "Published in the Water Qaultiy Technology Congerence, Philadelphia, PA, November 12-16, 1989, pp: 511-523. " |
| Supplementary Notes |
Presented at the Water Quality Conference held in Philadelphia, PA. on November 12-16, 1989. Prepared in cooperation with Illinois State Water Survey Div., Champaign. |
| Author Added Ent |
|
| Corporate Au Added Ent |
Illinois. Dept. of Energy and Natural Resources. ; United States. Environmental Protection Agency. Office of Research and Development. |
| PUB Date Free Form |
1991. |
| NTIS Prices |
PC A03/MF A01 |
| BIB Level |
m |
| OCLC Time Stamp |
20010111124247 |
| Cataloging Source |
OCLC/T |
| Language |
eng |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01411nam 2200301Ka 45020 |
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