Rapid analysis of triazolopyrimidine sulfoanilide herbicides in waters and soils by high-performance liquid chromatography with UV detection using a C18 monolithic column

✍ Scribed by Miguel Ángel Rodríguez-Delgado; Javier Hernández-Borges

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 535 KB
• Volume: 30
• Category: Article
• ISSN: 1615-9306
• DOI: 10.1002/jssc.200600271

✦ Synopsis

Abstract

In this work, the simultaneous analysis of five triazolopyrimidine sulfoanilide herbicides (flumetsulam, florasulam, metosulam, cloransulam‐methyl, and diclosulam) by HPLC using UV detection and a C~18~ monolithic column is proposed. The mobile phase which was composed of ACN, water, and formic acid was pumped at a high flow rate (5 mmL/min) providing an analysis time of all the compounds in less than 2.3 min. The LODs were in the low μg/L range (i. e. between 60 μg/L for flumetsulam and 90 μg/L for florasulam) and the calibration curves showed good linearity (R^2^ > 0.9949). The method was applied to the analysis of these compounds in spiked mineral and tap waters and soils after an SPE preconcentration procedure using C~18~ cartridges. Mean recovery values ranged between 35 and 110% for water samples providing LODs of the whole procedure in the low ng/L level, down to 280 ng/L, and between 77 and 92% for soil samples with LODs down to 9.38 μg/kg. This is the first time that this family of pesticides is simultaneously analyzed in both types of samples by HPLC and also using a monolithic column.