Conclusion
This paper describes a simultaneous DLLME and derivatization method combined with GC-ECD that is applied for the analysis of 19 chlorinated phenols in environmental water samples. The results of this study demonstrate that the represented method has acceptable relative recoveries and repeatabilities for the determination of CPs in well, tap and river water samples.
The detection limits at the μg L−1 and sub μg L−1 levels were achieved with sample volume of only 5.00 mL. In this method sample preparation time as well as consumption of toxic organic solvents is minimized. To compare with other extraction methods such as solid-phase extraction, liquid-phase microextraction and solid-phase microextraction, the presented method has lower RSDs and much shorter extraction time. This method is also simple, fast and inexpensive.