پديدآورندگان :
Izanloo Maryam - Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran , Behbahani Mohammad - Department of Mechanical Engineering, Shohadaye Hoveizeh University of Technology, Susangerd, Iran , Ghambarian Mahnaz ghambarian.m@gmail.com Iranian Research and Development Center for Chemical Industries, ACECR, Tehran, Iran , Sobhi Hamid Reza - Department of Chemistry, Payame Noor University, Tehran, Iran , Esrafili Ali - Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran , Esrafili Leili - Department of Chemistry, Tarbiat Modares University, Tehran, Iran
چكيده فارسي :
Herein, a new dispersive solid phase extraction method using a nano magnetic-titanium based sorbent in conjunction with HPLC-photo diode array detection (HPLC-DAD) was successfully developed. The method was proved to be simple, sensitive and highly efficient for the trace quantification of selected sulfonamides in relatively large volume of aqueous media [1,2]. Initially, the nano sorbent was successfully synthesized and subsequently characterized by Transmission Electron Microscopy and Fourier-transform infrared spectrometry. Then, it was applied to adsorb and extract the sulfonamides from aqueous media. To find the best conditions for the adsorption and extraction of the analytes, the effect of several parameters on the extraction efficiency were investigated in detail followed by the establishment of the optimal conditions. Under the established conditions, the calibration curves were linear over the concentration range of 1-200 µg/L. The limits of detection were determined to be in the range of 0.4-1.0 µg/L based on a signal-to-noise ratio of 3 (S/N=3). To test the extraction efficiency, the method was applied to various fortified real water samples. The average recoveries obtained from the fortified samples ranged between 90 - 108% with relative standard deviations of 3.2 - 8.7%. Finally, the approach was determined to be robust and effective for sulfonamides environmental analysis.
