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. 2015 May 26;15(6):12377–12388. doi: 10.3390/s150612377

Figure 6.

Figure 6

Raman spectra of 30 mmol/L sulfate solution using the LCOF-Raman experimental (LWCC-2100) setup and conventional experimental setup, respectively. The Raman peak of SO42− is located at 981 cm−1, and the Raman peak of H2O is located at 1640 cm−1.