Micellar enhanced fluorimetric determination of carbendazim in natural waters

✍ Scribed by J. Sancenón; M. de la Guardia

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 777 KB
• Volume: 287
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(94)85100-x

✦ Synopsis

A micellar enhanced flow-injection fluorimetric method was developed for the determination of carbendazim in natural water samples. The method is based on the direct injection of 500 ~1 of water into a three-channel flow manifold in which the samples are merged with a buffer solution and subsequently with a surfactant solution. Two alternative procedures were used: one based on the use of sodium dodecyl sulphate micelles in 0.1 M HCI, which permits a 2.6-fold enhancement of the sensitivity found in the absence of micelles to be obtained, and the other based on the use of cetyltrimethylammonium bromide in 0.1 M NaOH, which provides a lid-fold enhancement of sensitivity and a limit of detection of 1.3 X lo-* M, which corresponds to 2.5 fig 1-l of carbendazim. The recovery of carbendaaim in spiked water samples of different types varied from 94 to 107%.