PCN-222 metal–organic framework: a selective and highly efficient sorbent for the extraction of aspartame from gum, juice, and diet soft drink before its spectrophotometric determination

Table 3 Comparison of the proposed method with other methods for the determination of ASP

Sorbent	Detection technique	LOD (mg.L⁻¹)	Sorbent capacity (mg.g⁻¹)	linear range (mg.L⁻¹)	Enhancement factor	RSD (%)	Ref.
Sephadex G-25	Spectrophotometry-FIA	0.3	NM	0.001 –0.2	NM	1	[36]
C₁₈cartridges	HPLC/UV	NM	NM	NM	NM	3.1	[37]
Monolithic molecularly imprinted polymer	Capillary electrophoresis	NM	NM	0.0001–0.0004	NM	2.7	[38]
Tetraethylenepentamine functionalized Fe₃O₄ magnetic polymer	HPLC	0.14	NM	0.005–0.05	NM	3.8	[39]
Ethylenediamine-functionalized magnetic polymer	Ultra-fast liquid chromatography–mass spectrometry	0.15	NM	0.005–0.5	NM	1.1–2.8	[40]
PCN-222(Fe) MOF	Spectrophotometry	0.019	356	0.0–100	357	1.7	This work

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