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Abstract

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.

Keywords

Calcium ferro cyanide, Continuous flow injection analysis, Copper(II), NAG-SSP-5S-1D analyzer, Spectrophotometric method, Turbidity

Subject Area

Chemistry

Article Type

Article

First Page

3191

Last Page

3211

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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