Table 3. Quantification of the ionic strength influence on ν ₁ -CO₃ ²⁻ Raman shift at ambient conditions based on previous references.

Sources	[CO32−]	[Cl−]	∂ν/∂I	R2	Standard error
	mol·L−1	mol·L−1			cm−1
Oliver and Davis19	1.0−8.0a	0	−0.24	0.987	n.d.
Sun and Qin30	0.768−5.12a	0	−0.181	0.998	n.d.
	0.741 −1.56b	0	−0.063	0.993	0.033
	1.0b	0.5−2.0	−0.167	0.95	0.041
Sipos et al.20	0.1b	0.713−7.68*	−0.044I–0.058	0.996	n.d.
	0.1b	<4.7	~ −0.113	n.d.	n.d.

^aPotassium carbonate solution.

^bSodium carbonate solution.

^*Chloride anion is replaced by hydroxyl anion; n.d. indicates that the value is “not determined”.