attenuation of incident light sources (two flow tubes in one geometrical flow cell assembly: first with eleven sources while the second is covered by six sources) in cfia for the determination of copper (ii) ion

A highly accurate, simple, sensitive and fast developed method was used for the determination of copper (ii) ion using a homemade nag-adf-300-2 system with continuous flow injection analysis system. this method is based on reaction between copper (ii) ion and rubeanic acid to obtain a black precipitate for the ion-pair complex. turbidity was measured via the attenuated of incident light by precipitated at 0-180°. optimum parameters were studied to increase the sensitivity for newly developed methodology of copper (ii) ion -rubeanic acid system. the linear range for calibration graph was 1-25 mmol.l^-1 for cell a and 1-30 mmol.l^-1 for cell b, and loq 27.0538 μg /78.5 μl for cell a and 18.5539 μg /78.5 μl for cell b respectively with correlation coefficient (r) 0.9979 for cell a and 0.9992 for cell b, rsd % was lower than 0.5%, (n=8) for the determination of copper (ii) ion at concentration 18, 23 mmol.l^-1 for cell a and 12, 19 mmol.l^-1 for cell b, respectively. a comparison was made between the newly developed method with uv-spectrophotometric method as a classical method by tow type of statistical analysis for comparison the means and variance from different methods. the comparison of data revealed that long distance chasing photometer (nag-adf-300-2) was the choice with excellent extended detection, wide application and more sensitive.