PMID- 24148447 OWN - NLM STAT- MEDLINE DCOM- 20140603 LR - 20131023 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 116 DP - 2013 Nov 15 TI - Determination of phenylurea pesticides by direct laser photo-induced fluorescence. PG - 569-74 LID - S0039-9140(13)00587-0 [pii] LID - 10.1016/j.talanta.2013.07.014 [doi] AB - A direct Laser Photo-Induced Fluorescence (DL-PIF) method is developed for the determination of two phenylurea pesticides, namely fenuron and diflubenzuron. The DL-PIF method uses a tunable Nd:YAG-OPO Laser to obtain the photoproduct(s) and to simultaneously analyse their fluorescence in a short acquisition time on an intensified CCD camera. Compared to classical PIF methods, the use of a tunable laser improves the selectivity (by choosing the suitable excitation wavelength), increases the sensitivity (due to the high energy of the beam) and also reduces the time of analysis. The analytical performances of this method for the determination of both pesticides are satisfactory in comparison to other classical PIF methods published for the determination of phenylurea pesticides. The calibration curves were linear over one order of magnitude and the limits of detection were in the ng mL(-1) range. Satisfactory recoveries were obtained in the analysis of both pesticides in river and sea water spiked samples. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Diaw, P A AU - Diaw PA AD - Laboratoire de Photochimie et d'Analyse, Faculte des Sciences et Techniques, Universite C.A. Diop, Dakar, Senegal. FAU - Maroto, A AU - Maroto A FAU - Mbaye, O M A AU - Mbaye OM FAU - Gaye-Seye, M D AU - Gaye-Seye MD FAU - Stephan, L AU - Stephan L FAU - Coly, A AU - Coly A FAU - Deschamps, L AU - Deschamps L FAU - Tine, A AU - Tine A FAU - Aaron, J J AU - Aaron JJ FAU - Giamarchi, P AU - Giamarchi P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130711 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R RN - 0 (Insecticides) RN - 0 (Phenylurea Compounds) RN - 0 (Water Pollutants, Chemical) RN - J76U6ZSI8D (Diflubenzuron) RN - O7L040435W (fenuron) SB - IM MH - Calibration MH - Diflubenzuron/*analysis MH - Fresh Water/*chemistry MH - Humans MH - Insecticides/*analysis MH - Lasers, Solid-State MH - Light MH - Phenylurea Compounds/*analysis MH - Photochemical Processes MH - Seawater/*chemistry MH - Sensitivity and Specificity MH - Spectrometry, Fluorescence/instrumentation/methods MH - Water Pollutants, Chemical/*analysis OTO - NOTNLM OT - Laser OT - Pesticides OT - Photo-induced fluorescence (PIF) OT - Photoproducts OT - UV EDAT- 2013/10/24 06:00 MHDA- 2014/06/04 06:00 CRDT- 2013/10/24 06:00 PHST- 2013/04/11 00:00 [received] PHST- 2013/07/03 00:00 [revised] PHST- 2013/07/05 00:00 [accepted] PHST- 2013/10/24 06:00 [entrez] PHST- 2013/10/24 06:00 [pubmed] PHST- 2014/06/04 06:00 [medline] AID - S0039-9140(13)00587-0 [pii] AID - 10.1016/j.talanta.2013.07.014 [doi] PST - ppublish SO - Talanta. 2013 Nov 15;116:569-74. doi: 10.1016/j.talanta.2013.07.014. Epub 2013 Jul 11.