A novel spectrophotometric method for the determination of copper ion by using a salophen ligand, N,N′-disalicylidene-2,3-diaminopyridine

Abstract

In this study, a novel, selective and highly sensitive spectrophotometric method has been developed for the determination of copper(II) by using a new chromogenic reagent N,N-bissalicylidene-2,3-diaminopyridine (H 2 IF). The absorbance was measured at max = 414 nm. Experimental conditions were optimized, and Beer's law was observed in the concentration range of 6.35-318 g L −1 of copper. The molar absorptivity of the complex was calculated and found to be 1.46 × 10 5 L mol −1 cm −1. The detection and quantification limits were calculated and found to be 6.38 g L −1 and 21.27 g L −1 , respectively. The calculated relative standard deviation (n = 5) was 0.62% for a standard solution including 63.5 g L −1 copper(II). The interference effects of the common ions have been studied and the statistical assessment of the obtained results is presented. The developed method was applied for the determination of copper in water samples. The reliability and accuracy of the developed method was proven by the analysis of a waste water standard.

Development of a New spectrophotometric based flow injection analysis method for the determination of copper (II)

“…The spectrophotometric method developed within the scope of the study seems to be more advantageous in terms of the short duration of the reaction period than other existing methods [13][14][15][16][17][18][19][20]. Experimental findings have shown that in aqueous media the reagent is a potential application for the sensitive, rapid and selective perception of Cu (II).…”

“…In summary, a relevant benchmark of spectrophotometric methods from the attached literature [13][14][15][16][17][18][19][20] and from present study is compiled and given in Table 3. All parameters in Table 3 are nearly comparable within a reasonable data range and seem not superior to each other in general trend.…”

Spectrophotometric Determination of Cu (+II) by Complexation with 2-(4-biphenyl) Imidazo [1,2-] Pyrimidine-3-Hydrazone and Studying Characteristics of prepared complex.

“…Standard addition method is used to determine copper content even at low concentration and to avoid effect of matrix in different samples. The resulted values and their statistical treatment are showed in figures (10)(11)(12)(13)(14)(15) and table 10 below: Un acceptable error at concentration 500 ppm and less despite of presence of oxalate ions. Figure 11: standard addition curve for Cu 2+ determination in tap water.…”

Development of a Composite Cu(II)-Selective Potentiometric Sensor Based on a Thiourea Derivative Symmetric Schiff Base

“…Considering the toxic effects of copper, its determination is quite critical. There are a number of analytical techniques that have been reported for the determination of copper ions at very low concentration levels, including ion chromatography [7,8], UV-Vis Spectrophotometry [9,10], flame atomic absorption spectrometry (FAAS) [11,12], graphite-furnace atomic absorption spectrometry (GF AAS) [13], Colorimetry [14][15][16], fluorescence spectroscopy [17,18], ICP-MS [19], ICP-OES [20], ICP-AES [21], Capilarry Electrophoresis-UV [22], titrimetry [23], gravimetry [24], electrogravimetry [25] and electrochemical methods [26][27][28][29][30].…”