Abstract:The hollow fiber protected liquid phase microextraction (HF-LPME) technique was evaluated for the extraction of organochlorine pesticides in orange juice prior to gas chromatography-electron capture detection (GC-ECD) analysis. At first, the effects of the HF-LPME experimental parameters on the enrichment factor were studied simultaneously using a 2 5-1 fractional factorial design. The HF-LPME variables of interest were extraction time, stirring speed, acceptor phase, salt (NaCl, w/v %) and pH. In the next ste… Show more
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