Detection of Total Phenol in Green and Black Teas by Flow Injection System and Unmodified Screen Printed Electrode
Figure 4
Effect of EDTA solution on the operational stability of the gold screen-printed electrode. High level (100.0 mg·L−1, square) or low level (50.0 mg·L−1, circle) refers to successive injection of standard-solutions of gallic in phosphate buffer. is the flow rate which depending on the experiments; it is distilled water for 100.0 mg·L−1 gallic acid and 0.25 M EDTA solution for 50.0 mg·L−1 gallic acid.
