Table 1. Raman shifts of ν ₁ -CO₃ ²⁻ with increasing pressure based on three Na₂CO₃-NaCl solutions.

No. 1		No. 2		No. 3
P/MPa	Δν1066/cm−1	P/MPa	Δν1066/cm−1	P/MPa	Δν1066/cm−1
122	0.8	122	0.4	134	0.5
145	1.0	145	0.5	190	0.7
156	1.2	201	0.9	257	0.5
246	1.7	190	1.0	540	2.5
336	1.8	336	1.4	632	2.8
678	3.5	483	2.3	678	3.2
771	4.3	759	3.6	887	4.0
957	5.2	724	3.7	968	4.9
1027	5.6	817	4.2	1109	5.8
1050	6.2	1027	5.7	1133	5.7
1168	6.0	1074	5.8	1216	6.7
1347	7.7	1204	5.8	1251	6.5
		1263	6.6	1394	6.3
		1323	6.7	1538	7.5
		1454	7.5