New Mode for 4 mm Path Irradiation and One Side Detection at 0–180° for Cu (II)ion Determination in Different Samples using On-Line Continuous Flow Feed and Simplified, Sensitive, and Portable Photometer

This study presents a rapid, sensitive, and straightforward approach for measuring Cu(II) ions using turbidity continuous flow injection analysis (CFIA) . The method involves reacting Cu(II) ion with calcium Ferro cyanide to produce a brown-red precipitate. To detect the attenuation of incident light as a result of collision on the surfaces of the precipitate particles, the analyzer NAG-SSP-5S-1D was used to measure turbidity at an angle (0–180°). The linear range of Cu(II) measurements extends from 0.01 to 5 mmol.L–1 with Correlation Coefficient of 0.9993 and R2 % = 99.86 .The limit of detection (LOD) was determined to be 23.829 ng/sample from diluted the lowest concentration in the calibration curve, and the repeatability of the method (RSD%) was demonstrated to be less than 0.3 % (n = 6) for the selected concentration (1,5 mmol.L–1). The method was successfully applied to the determination of Cu (II) ions in a variety of alloys using the standard addition method. A comparison was made between the newly developed method analysis and the classical method ((UV Spectrophotometry, λmax = 520 nm ) using t-test. It was noticed that there was no significant difference between the two methods at 95 % confidence level. Overall, the developed flow injection method offers simplicity, sensitivity, and reliable analytical performance for the determination of Cu(II) ion . Therefore the newly developed method can be used of as an alternative and an acceptable method for the analysis of Cu (II) ions in alloys compared to the reference method.