Answer Happy

Question 5: Which statements about the QuECHERS method is not correct? * Salting out refers to the phase separation that occurs when salt is added to a mixture of water and a water-miscible organic solvent. O Acetonitrile is the preferred QuECHERS solvent because it dissolves medium to high polarity pesticides better than alternatives. QUECHERS sample preparation is followed by a clean-up step before the extract is injected directly into a GC system. Selective ion monitoring could enhance the analysis of QuECHERS extracts since these may not be as clean as those obtained from other sample preparation procedures. All these possibilities are correct.