Stereoselective analysis of acid herbicides in natural waters by capillary electrophoresis

✍ Scribed by Chiara M. Polcaro; Carolina Marra; Claudia Desiderio; Salvatore Fanali

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 72 KB
• Volume: 20
• Category: Article
• ISSN: 0173-0835
• DOI: 10.1002/(sici)1522-2683(19990801)20:12<2420::aid-elps2420>3.0.co;2-p

✦ Synopsis

Stereoselective analysis of acid herbicides in natural waters by capillary electrophoresis

A capillary electrophoretic method for the stereoselective analysis of aryloxypropionic and aryloxyphenoxypropionic acidic herbicides in ground water and river water was performed. Vancomycin and g-cyclodextrin were added to the background electrolyte (BGE) as chiral selectors. Water sample preconcentration was accomplished by solidphase extraction on styrene-divinylbenzene packed cartridges (2 L of ground water and 1 L of river water). The analytical method allowed for the resolution of mecoprop, fenoprop, fluazifop and haloxyfop racemic mixtures in natural water samples spiked with enantiomer concentration levels in the range 0.1±0.13 ppb for ground water and 0.4±0.54 ppb for river water.