Spectrophotometric determination of ethiofencarb in waters by reaction with p-aminophenol
Khalaf, KD; Sancenon, J; De La GUARDIA, M
| HERO ID | 2280600 |
|---|---|
| Year | 1993 |
| Title | Spectrophotometric determination of ethiofencarb in waters by reaction with p-aminophenol |
| Authors | Khalaf, KD; Sancenon, J; De La GUARDIA, M |
| Volume | J ANAL CHEM |
| Page Numbers | 1-2 |
| Abstract | BIOSIS COPYRIGHT: BIOL ABS. An automatized procedure has been developed for the spectrophotometric determination of ethiofencarb in water by reaction with p-aminophenol after alkaline hydrolysis to obtain the corresponding phenol sulphone. The hydrolyzed samples are continuously introduced into different manifolds at the same time as 300 mg/lp-aminophenol, 0.004 mol/l KIO4 and 0.04 mol/l NaOH solutions. The absorbance is measured at 638 nm after a reaction time of 6 min in stop flow. This absorbance band corresponds to the indo dye obtained from the reaction between the phenol sulphone of ethiofencarb and the quinoneimine form of the p-aminophenol and it permits a matrix-free spectrophotometric determination of ethiofencarb with a limit of detection of 33 mug/l. The recovery of ethiofencarb in different water matrices varies from 71 to 126%. |
| Doi | 10.1007/BF00326044 |
| Wosid | WOS:A1993LV82800011 |
| Report Number | BIOSIS/94/34682 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal: FRESENIUS ISSN: |
| Is Public | Yes |
| Language Text | English |