Coupled column liquid chromatography for the rapid determination of N-methylcarbamates and some of their main metabolites in water |
| |
Authors: | J L Martínez Vidal P Parrilla Vázquez J Martínez Fernández |
| |
Institution: | 1. Department of Analytical Chemistry, University of Almería, La Ca?ada, 04120, Almería, Spain
|
| |
Abstract: | Summary A sensitive and selective coupled-column liquid chromatography (LC-LC) method was developed for the trace level determination
of some N-methylcarbamates and some of their main metabolites as aldicarb, aldicarb-sulphoxide, aldicarb-sulphone, carbofuran
and 3-hydroxicarbofuran in drinking and ground waters. The limit of determination can be reduced to 0.1 μg.L−1 by solid phase extraction with a subsequent evaporation step. Environmental samples spiked at 0.1 μg.L−1 were preconcentrated off-line with graphite carbon and then analyzed by LC-LC with UV detection yielding average recoveries
between 81–109% (n=5) with RSD between 5–9%. The overall procedure allowed a sample throughput of up to 30 samples per day. |
| |
Keywords: | Column liquid chromatography Column switchings N-methylcarbamates Ground and drinking water |
本文献已被 SpringerLink 等数据库收录! |