Ultrasound Assisted Surfactant Enhanced Emulsification Microextraction and Spectrofluorimetry for Determination of Oxadiazon in Agricultural Water Samples

Document Type: Research Article

Authors

Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, I.R. IRAN

Abstract

In this work, an environmentally friendly sample pre-treatment method, Ultrasound Assisted Surfactant Enhanced Emulsification Microextraction (UASEME) followed with spectrofluorimetry was performed for determination of oxadiazon residues in water samples. After the determination of the most suitable extraction solvent and its volume, other parameters such as type and concentration of surfactant, pH, extraction time and ionic strength were optimized. Under the best conditions for extraction recovery, 50µL of chlorobenzene was chosen as extraction solvent and Tween 20 in concentration of 0.06 mmol/L as emulsifier and 2 min was the required time for quantitative analysis, without ionic strength and pH adjustment. Limit of detection and relative standard deviation were calculated as 0.05µg/L and 3.2% respectively. The procedure was applied successfully for assessing matrix effect in real water samples with relative recovery 96-104% with the precision in the range of 2.9-3.4%. The results demonstrate that UASEME procedure as reported is reliable, rapid and easy to use for analysis of oxadiazon in water samples.  

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[1] Tomlin C., "The Pesticide Manual", 11th ed., World Compendium, British Crop Protectio Council, Farnham, UK, (1997).
[2] "Extension Toxicological Network (EXTOXNET)", University of California-Davis, Oregon State University, Michigan State University and the University of Idaho.
[3] Lin Y.J., Lin C., Yeh K.J., Lee A., Photodegradation of the Herbicides Butachlor and Ronstar Using Natural Sunlight and Diethyamine, Bull. Environ. Contam. Toxicol., 64:780-785 (2000).
[4] Boyd-Boland A.A., Pawliszyn J.B., Chromatogr A. J., Solid Phase Microextraction of Nitrogen Containing Herbicides,J. Chromatogr A., 704: 163-172  (1995).
[5] Navalon A., Prieto A., Araujo L., Vilchez J.L.,Determination of Tebufenpyrad and Oxadiazon by Solid Phase Microextraction and Gas Chromatography- Mass Spectrometry,Chromatographia, 54: 377-382 (2001).
[6] Guillermo Q., Sergio A., Javier M., Salvador G., Agustin P., Miguel de la G,, HPLC Determination
of Oxadiazon in Commercial Pesticide Formulations
, J. Braz, Chem. Soc. , 19: 1394-1398 (2008).
[7] Tanabe A., Mitobe H., Kawata K., Sakai M., Monitoring of Herbicides in River Water by Gas Chromatography-Mass Spectrometry and Solid-Phase Extraction, J. Chromatogr. A.,  754: 159-168 (1996).
[8] Riley M.B., Keese R.J., Comparison of Solid Phase Extraction Techniques for Herbicides, Weed Sci., 44: 689-693 (1996).
[9] Ying G.G., Williams B., Health B.,The Degradation of Oxadiazon and Oxyfluorfen by Photolysis, J. Environ, Sci., 34: 397-567 (1999).
[10] Rezaee M., Assadi Y., Milani Hosseini M.R., Aghaee E., Ahmadi F., berijani S., Determination of Organic Compounds in Water Using Dispersive Liquid-Liquid Microextraction, J. Chromatogr A.,, 1116: 1-9 (2006).
[12] Montes R., Rodriguez I., Ramil M., Rubi E., Cela R., Solid-Phase Extraction Followed by Dispersive Liquid-Liquid Microextraction for the Sensitive Determination of Selected Fungicides in Wine, J. Chromatogr. A., 1216: 5459-5466 (2009).
[17] Regueiro J., Liompart M., Garcia-Jares C., Garcia-Monteagudo J.C., Cela R., Ultrasound-Assisted Emulsification-Microextraction of Eemergent Contaminants and Pesticides in Environmental Waters, J. Chromatogr. A., 1190: 27-38 (2008).
[21] Jia C.H., Zhu X.D., Chen L., He M., Yu P.Z., Zhao E.C., Extraction of Organophosphorus Pesticides in Water and Juice Using Ultrasound-Assisted Emulsification–Mixroextraction, J. Sep. Sci., 33: 244-250 (2010).
[23] Filik H., Giray D., Cloud Point Extraction for Speciation of Iron in Beer Samples by Spectrophotometry, Food Chem.,130: 209-213 (2012).
[26] Paleologos E.K., Giokas D.L., Karayannis M.I., Micelle - Mediated Separation and Cloud-Point Extraction, TrendsAnal. Chem.,  24: 426-436 (2005).
[27] Mitura J., Ishii H., Watanabe H., Extraction and Separation of Nickel Chelate of 1-(2-Thiazolylazo)-2-Naphthol in Nonionic Surfactant Solution,  Bunseki Kagaku, 25: 808-809 (1976).
[28] Wu Q.H., Chang Q.Y., Wu C.X., Rao H., Zeng X., Wang C., Wang Z., Ultrasound-Assisted Surfactant-Enhanced Emulsification Microextraction for the Determination of Carbamate Pesticides in Water Samples by High Performance Liquid Chromatography,  J. Chromatogr A., 1217: 1773-1778 (2010).
[30] Guoqiang  X., Shengping W., Xiuming J.,. Xing L, Lijun H., Determination of Trace Copper(II) in Food Samples by Flame Atomic Absorption Spectrometry After Cloud Point Extraction, Iran. J. Chem. Chem. Eng. (IJCCE), 30(3):101-107 (2011).
[32] Navalo´n A., Prieto A., Araujo L., V´ılchez J.L., Determination of Oxadiazon Residues by Headspace Solid-Phase Microextraction and Gas Chromatography- Mass Spectrometry, J. Chromatogr A., 946: 239-245 (2002).