Semi-Automated Flow Injection Method for the Determination of Iron (II) By 1,10-Phenanethroline

Abstract

The research is included determination of Fe(II) via its reaction with 1,10-phenanethroline to form light-red complex which is absorbed at λ max =510 nm. Home-made flow injection valve is designed with two loading loops, L1 and L2. A series of studies are conducted represented by fixing physical and chemical optimum conditions, dead volume, repeatability, dispersion coefficient, construction calibration graph, and application of the method. The dead volume is zero for the system which it has high repeatability (n=8) with RSD and SD 0.6 and 0.05 respectively. The dispersion coefficient is 1.68 at the concentration 10 ppm. The range of measurements of calibration graph is (0.05-18.00) ppm with limit of detection (S/N=3) 0.05 ppm.

A New Flow Injection System with Merging-Zone Technique for the Determination of Copper(II) by Neocuproine Reagent in Aqueous Solution

“…Therefore, the homemade valve worked with zero dead volume, indicating that this new flow injection unit is highly efficient. In previous articles, many designs of homemade valves accomplished operation with zero dead volume [32][33][34].…”

Determination of Mefenamic Acid in Aqueous Solutions Using Reverse - Continuous Flow Injection Analysis

“…In the presence of primary and secondary amino groups at critical medium and moderate temperatures, NQS can react to create spectrophotometrically detectable derivatives [8,9]. In contrast to other types of analysis, flow-injection analysis (FI) is differentiated by its simplicity, quickness, cheap equipment requirements, and precision of results [10][11][12][13][14][15]. Each essay is completed in a fraction of the time manual analytical processes require, making it a critical alternative to manual analytical procedures.…”