Analysis of carbamate pesticides by micellar electrokinetic chromatography

✍ Scribed by Rossi, Massimo ;Rotilio, Domenico

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 489 KB
• Volume: 20
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240200505

✦ Synopsis

Abstract

Capillary elcctrophoresis (CE) was used for the qualitative and quantitative analysis of eleven compounds of the carbamate, thio‐carhamate, and dithiocarbamate classes of pesticides. Micellar elec‐trokinetic chromatography (MEKC) was employed for the separation of these substances. The analysis was performed using an uncoated fused silica column, in borate buffer containing SDS and 10% methanol at basic pH, and UV detection at 230 nm. The addition of methanol to the buffer increased the separation and affected intrinsic migration of analytes. The working standard solutions were prepared in acetonitrile/water 50:50. Although these compounds are structurally different, with a large spectrum of chemical properties, such as polarity and solubility, good separation and sensitivity were obtained. Moreover, good recovery of car‐bamates was obtained from tap‐water using a styrene‐divinylben‐zene polymer column with the solid phase extraction (SPE) technique.