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. 2022 Aug 25;12:14502. doi: 10.1038/s41598-022-18886-2

Figure 2.

Figure 2

Effects of changing oxalic acid concentration on the drugs spiked cow milk. (a) 25 mM Oxalic acid:ACN: MeOH (70:20:10). (b) 30 mM Oxalic acid:ACN: MeOH (70:20:10). (c) 50 mM Oxalic acid:ACN: MeOH (70:20:10). Chromatographic conditions: Injection volume: 30 µL, Temperature: 25 ℃ ,Flow rate: 1 mL/min, Detection wavelength: 358 nm.