. 2024 Jun 24;14(28):20073–20080. doi: 10.1039/d4ra01473a

Molarity calculations based on LRAF models and the adjusted coefficients of determination (R²)^a.

Test	Solutions	Solutes	Linear regression analysis function models	Adjusted coefficient of determination (R²)
1	LiCl	LiCl	y = 45.79x + 1.57	0.9967
1	LiCl	HCl	y = 45.79x + 1.57	0.9967
2	LiOH	LiOH	y = −56.31x + 0.25	0.9844
2	LiOH	H₂O	y = −56.31x + 0.25	0.9844
3	Li₃PO₄	LiOH	y = 70.82x + 3.39	0.9133
3	Li₃PO₄	H₃PO₄	y = 70.82x + 3.39	0.9133
4	LiCl	LiOH	y = −48.83x − 0.09	0.9969
4	LiCl	HCl	y = −48.83x − 0.09	0.9969
5	NaCl	NaOH	y = −116.55x − 0.10	0.9623
5	NaCl	HCl	y = −116.55x − 0.10	0.9623

y: Calculated molarity, x: absorbance.

Molarity calculations based on LRAF models and the adjusted coefficients of determination (R2)a.