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. 2021 Mar 17;12(3):312. doi: 10.3390/mi12030312

Figure 9.

Figure 9

Differential pulse voltammogram showing three phenolic compounds’ simultaneous determination with 4.5 × 10−3 M for sinapic acid, 5.1 × 10−3 M for syringic acid, and 1.6 × 10−3 M for rutin respectively at MCPE in 0.5 M ABS with pH 4.8, recorded at 0 V to +1.0 V.