Question: Barbital can be isolated from urine by solid-phase extraction with C18-silica. The barbital is then eluted with 1:1 vol/vol acetone:chloroform. Explain how this procedure works.

Barbital can be isolated from urine by solid-phase extraction with C18-silica. The barbital is then eluted with 1:1 vol/vol acetone:chloroform. Explain how this procedure works.

CH,CH ,NH CH,CH, Barbital

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