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On-line microdialysis sampling with serial additions of hydrogen peroxide standard to the vial containing the microdialysis probe. Microdialysis perfusate: 50 mM boric acid at pH 9.2. The 2 mL vial contained 50 mM boric acid at pH 9.2. 100 μL of 10mM hydrogen peroxide was serially added to the reaction well. Separation and detection conditions were identical to Figure 5. Syringe pump was set at a flow rate of 1 μL/min for microdialysis sampling.
