| Main Title |
Abiotic Reduction of Nitro Aromatic Pesticides in Anaerobic Laboratory Systems. |
| Author |
Tratnyek, P. G. ;
Macalady, D. L. ;
|
| CORP Author |
Colorado School of Mines, Golden. Dept. of Chemistry and Geochemistry.;Environmental Research Lab., Athens, GA. |
| Publisher |
c1989 |
| Year Published |
1989 |
| Report Number |
EPA-R-811250; EPA/600/J-89/254; |
| Stock Number |
PB90-135534 |
| Additional Subjects |
Pesticides ;
Oxidation reduction reactions ;
Anaerobic conditions ;
Mitro compounds ;
Aromatic compounds ;
Electrochemistry ;
Thermodynamics ;
Reaction kinetics ;
Quinones ;
pH ;
Reprints ;
Environmental pollutants ;
Methyl parathion
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB90-135534 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
9p |
| Abstract |
Rapid abiotic reduction of nitro aromatic pesticides occurs in homogeneous solutions of quinone redox couples, which were selected to model the redox-labile functional groups in natural organic matter. The kinetics of methyl parathion disappearance are first order in methyl parathion and first order in the monophenolate form of the hydroquinone. The concentration of the monophenolate was calculated from electrode measurement of Eh and pH of the model system and the thermodynamic data. The second-order rate constant at 25 C is 31.1 + or - 4.9 L/min/mol in a solution where the quinone-hydroquinone redox system consists of partially reduced indigo disulfonate and is (3.80 + or - 0.65) x 10(4) L/min/mol in redox systems based on anthraquinonedisulfonate. Reduction of methyl parathion is negligible above about -50 mV; this is the apparent reduction potential of methyl parathion under the conditions used in the study. In indigodisulfonate model systems, the disappearance of profluralin is also second order but with a rate constant equal to 79.0 + or - 8.6 L/min/mol. (Copyright (c) 1989 American Chemical Society.) |
| Supplementary Notes |
Pub. in Jnl. of Agriculture and Food Chemistry, v37 n1 p248-254 Jan 89. See also PB86-217007. Sponsored by Environmental Research Lab., Athens, GA. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Abiotic Reduction of Nitro Aromatic Pesticides in Anaerobic Laboratory Systems. |
| Category Codes |
99D; 99F; 68E |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
004019270 |
| Origin |
NTIS |
| Type |
CAT |
