Four Injection–Single Detector Merging Zone Continues Flow Injection Analysis for Determination of Ascorbic Acid in Bell and Chili Peppers

Abstract

Vitamin C can improve the immune system and cause chronic inflammatory diseases. A significant proportion of ascorbic acid can be obtained from fruits, vegetables, and food products. The selection of bell and chili pepper samples was made according to increasing use at the present time due to Coronavirus in 2019 and 2020. This paper deals with a merging zone (MZ based on four-hand mead injection/single detection using a spectrophotometer. Merging zone (MZ) systems resulting from different reactions via flow injection analysis (FIJ) would be beneficial for identifying the simultaneous reaction faster and at a lower cost. Specifically, the MZ area and ferroin complex resulting from the reaction between Fe (III), ascorbic acid (AA), and 1,10-Phenanthroline under acetic acid conditions. The system of the MZ system was modelled under continuous FIJ and determination of AA. The method performed AA at a range of (110-3 - 3210-3L), with a correlation coefficient of 0.9822 and DL 12.5ng. The obtained results from bell and chili peppers show excellent agreement with the results from the SCI ̈O analysis.