| Main Title |
Improved Silica Gel Cleanup Method for Organophosphorus Pesticides. |
| Author |
Lores, E. M. ;
Moore, J. C. ;
Moody, P. ;
|
| CORP Author |
Environmental Research Lab., Gulf Breeze, FL. ;Computer Sciences Corp., Gulf Breeze, FL. |
| Year Published |
1987 |
| Report Number |
EPA/600/J-87/144 ;CONTRIB-571; |
| Stock Number |
PB88-149018 |
| Additional Subjects |
Silical gel ;
Phosphorus organic compounds ;
Adsorbents ;
Reprints ;
Pesticide residues
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB88-149018 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
8p |
| Abstract |
Quantitative recovery of some organophosphorus pesticide residues has not been possible with existing silica gel-cleanup procedures. The authors have developed a modification that permits quantitative recovery of all organophosphorus pesticides tested, except those with a carbamate functional group. The method uses a 3.5 g silica gel column with a 1% acetic acid wash to condition the column prior to the addition of the sample. Percentage recovery and standard deviation of compounds such as phorate and disulfoton are 96 (5.6) and 98 (1.0), respectively. Recoveries range from 92 to 101% for the 11 compounds tested. |
