Table 1. Comparison of Fe³⁺ ion detection based on different MOF materials.

MOF	LOD/(mol L−1)	Ref.
[Tb(BTB)(DMF)]	10 × 10−6	1
[Zn2(tpt)(tda)2]·H2O	4.72 × 10−6	29
Eu3+@UiO-66	12.5 × 10−6	30
Zn-MOF-74	1.04 × 10−6	31
Tb(3+)@Zn-MOF	7.5 × 10−6	32
Tb3+@Sr-BDC	7.3 × 10−6	This work