Employing a Carbon-Based Nanocomposite as a Diffusive Solid-Phase Extraction Adsorbent for Methamphetamine for Therapeutic Purposes

Table 2

Comparison table of proposed and existing methods.

Sample	Technique	Limit of detection	Recovery
Methamphetamine	Solid phase extraction	100	60.6
	Stir bar sorptive extraction	60	82.8
	Solid phase microextraction	30	96.7
	Dispersive liquid-liquid ME	20	98.5
	Proposed-diffusive SPE	10	99.2