Preconcentration and Determination of Endocrine Disruptor Pesticides in Well Water by Solidified Floating Organic Drop Microextraction


Pelit F. , PELİT L. , ALACA C., ERTAŞ H. , ERTAŞ F. N.

CLEAN-SOIL AIR WATER, cilt.42, ss.1284-1291, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 42 Konu: 9
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1002/clen.201300731
  • Dergi Adı: CLEAN-SOIL AIR WATER
  • Sayfa Sayıları: ss.1284-1291

Özet

An effective, rapid, green and simple method for the preconcentration and determination of endocrine disruptor pesticides (aldrin, bromopropylate, penconazole, chlorpyrifos, iprodione, lambda-cyhalothrin, and procymidone) has been developed by using solidified floating organic drop microextraction. In this technique a free microdrop of 2-dodecanol which is liquid at the room temperature was used as an extracting solvent. Considering the number of parameters that are likely to affect the signal, extraction solvent type, extraction solvent volume, extraction time and temperature, sample volume, salt effect and rate of mixing on pesticides extraction were optimized. The analytes were extracted from the water samples by using 10 mu L of 2-dodecanol for 20min at 70 degrees C in the presence of 0.5g/10mL NaCl. The separation power of the GC was coupled with the excellent sensitivity of the microextraction technique enabling us to determine the pesticide mixtures simultaneously in the ng/L range with satisfactory relative standard deviation values. The limit of detection levels attained by this method for Iprodione and Procymidone in particular, clearly display the effectiveness and sensitivity of the method over previous methods which include time consuming steps and require high volumes of sample. The developed method was validated for the monitoring of endocrine disruptor pesticides in well water samples.