The extraction efficiency of liquid- liquid extraction (LLE) depends on the hydrophobicity (D) of the chemical to be ext

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answerhappygod
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The extraction efficiency of liquid- liquid extraction (LLE) depends on the hydrophobicity (D) of the chemical to be ext

Post by answerhappygod »

The extraction efficiency of liquid- liquid extraction (LLE)
depends on the hydrophobicity (D) of the chemical to be extracted
and number of extractions. Suppose a water sample contaminated with
PCB is extracted with methylene chloride for determination of this
pollutant and suppose the partition coefficient (D) is 25. Please
calculate the extraction efficiency (one is extraction with 30 mL,
the other is three extractions, with 10 mL each) and compare which
way could get higher extraction efficiency (assume water sample
volume=100 mL)?
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