scholarly journals Theoretical Approaches to Determination of Copper Complexation of Strong Ligands in Natural Waters. I. Thermodynamic calculations of complexing abilities based on two different measurements: copper determination and copper titration.

1993 ◽  
Vol 44 (4) ◽  
pp. 105-118 ◽  
Author(s):  
Takashi Midorikawa ◽  
Eiichiro Tanoue
Keyword(s):  
Natural Waters ◽  
Thermodynamic Calculations ◽  
Copper Determination ◽  
Theoretical Approaches ◽  
Copper Complexation ◽  
Determination Of Copper

Application of internal standard for micro extraction-spectrophotometric determination of copper in serum and in natural waters

1999 ◽  
Vol 387 (2) ◽  
pp. 217-224 ◽  
Author(s):  
Kazimierz Wróbel ◽  
Katarzyna Wróbel ◽  
Gustavo Cruz-Jiménez ◽  
Fabiola Angulo-Romero
Keyword(s):  
Spectrophotometric Determination ◽  
Natural Waters ◽  
Internal Standard ◽  
Determination Of Copper

Determination of copper complexation in surface microlayer of Daya Bay and Jiaozhou Bay

2005 ◽  
Vol 23 (2) ◽  
pp. 238-245
Author(s):  
Zhang Zhengbin ◽  
Liu Chunying ◽  
Yu Zhigang ◽  
Liu Liansheng ◽  
Wang Zhaoding ◽  
...  
Keyword(s):  
Jiaozhou Bay ◽  
Daya Bay ◽  
Surface Microlayer ◽  
Copper Complexation ◽  
Determination Of Copper

scholarly journals Anodic Stripping Voltammetric Determination Of Copper In Multivitamin-Mineral Formulations Using Iodine-Coated Platinum Electrode

2021 ◽  
Vol 16 (1) ◽  
pp. 48-56
Author(s):  
Mohammad Amayreh ◽  
Wafa Hourani ◽  
Mohammed Khair Hourani
Keyword(s):  
Platinum Electrode ◽  
Limit Of Detection ◽  
Statistical Tests ◽  
Supporting Electrolyte ◽  
Copper Oxidation ◽  
Copper Determination ◽  
Limit Of Quantitation ◽  
Significant Difference ◽  
Determination Of Copper

In this work, the utilization of the modified iodine-coated polycrystalline platinum electrode as a voltammetric sensor for copper determination in pharmaceutical formulations was reported. The optimized experimental parameters for the determination of copper were using 0.1M KCl as a supporting electrolyte with a scan rate of 50 mV/s, deposition potential of - 0.2 V, and a deposition time of 2 minutes. The anodic peak related to Copper oxidation is centered at about + 0.05 V. The extended detected linear range for the developed method was between 1 ppm and 100 ppm. The anodic current showed excellent linearity with R2 = 0.9986. The limit of detection (LOD) and limit of quantitation (LOQ) were 0.115 ppm and 0.346 ppm, respectively, which attests to the sensitivity of the method. The investigation for the effect of potential interferences from multivitamins tablet ingredients indicated a specific selectivity toward copper and the absence of any electrochemical response toward these components. The developed method was successfully applied to analyze copper and the obtained results were in good agreement with the labeled values, besides that, the statistical tests indicated no significant difference at p = 0.05 with 95 % confidence level.

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