| Main Title |
Fluorescent Polycyclic Aromatic Hydrocarbons as Probes for Studying the Impact of Colloids on Pollutant Transport in Groundwater. |
| Author |
Backhus, D. A. ;
Gschwend., P. M. ;
|
| CORP Author |
Massachusetts Inst. of Tech., Cambridge. Ralph M. Parsons Lab.;Robert S. Kerr Environmental Research Lab., Ada, OK.;Department of Energy, Washington, DC. |
| Publisher |
c1990 |
| Year Published |
1990 |
| Report Number |
EPA-R-812466, DE-FG02-86ER60413; |
| Stock Number |
PB91-117457 |
| Additional Subjects |
Humic acids ;
Sewage ;
Colloids ;
Ground water ;
Fluorescence ;
Probes ;
Aromatic polycyclic hydrocarbons ;
Extinguishing ;
Water pollution ;
Field tests ;
Reprints ;
Cape Cod(Massachusetts) ;
Environmental transport
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB91-117457 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
A fluorescence-quenching method was developed to assess the hydrophobic organic pollutant binding potential of organic colloids (OC) in unaltered natural waters. This method allows direct assessment of the importance of OC-enhanced pollutant transport for environmental samples under in situ water chemistry conditions, without requiring the isolation of OC or separation of equilibrated phases; testing of chemicals that suffer substantial wall losses from aqueous solutions; and examination of unstable water samples such as anoxic samples. The experiments show that some OC (Aldrich humic acids) fully quench OC-associated perylene fluorescence, but others (bovine serum albumin) do not. This implies that fluorescence-quenching results collected for a single (OC) or over a limited (OC) range provide only a lower limit estimate of the potential for OC association. Tests with groundwater, recharged with secondarily treated sewage and containing OC at concentrations of about 1 mg of C/L, showed temporal variation in the ability of OC present to quench or bind perylene. (Copyright (c) by the American Chemical Society, 1990.) |
| Supplementary Notes |
Pub. in Environmental Science and Technology, v24 n8 p1214-1223 1990. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK., and Department of Energy, Washington, DC. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Fluorescent Polycyclic Aromatic Hydrocarbons as Probes for Studying the Impact of Colloidson Pollutant Transport in Groundwater. |
| Category Codes |
68D; 99A |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/15 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
101124123 |
| Origin |
NTIS |
| Type |
CAT |
