scholarly journals Simultaneous determination of copper, lead and zinc in high purity aluminum by squarewave polarographic method

1972 ◽  
Vol 21 (4) ◽  
pp. 475-479 ◽  
Author(s):  
Wataru YOSHIMURA
Keyword(s):  
Simultaneous Determination ◽  
High Purity ◽  
Polarographic Method ◽  
Lead And Zinc ◽  
High Purity Aluminum ◽  
Determination Of Copper ◽  
Copper Lead

Simultaneous Determination of Copper, Lead and Zinc in Alloy by Potentiometric Titration Coupled with Multivariate Calibration Using a Flow Injection Technique

2013 ◽  
Vol 785-786 ◽  
pp. 1353-1358 ◽  
Author(s):  
Chan Gai Deng ◽  
Li Fu Liao ◽  
Wei Long
Keyword(s):  
Simultaneous Determination ◽  
Potentiometric Titration ◽  
Flow Injection ◽  
Multivariate Calibration ◽  
Injection Technique ◽  
Lead And Zinc ◽  
Relative Standard ◽  
Determination Of Copper ◽  
Copper Lead

A new potentiometric titration method coupled with multivariate calibration using a flow injection technique for the simultaneous determination of multi-components in alloy has been developed. the titrant is a mixture of EDTA and sodium fluoride, both mercury film electrode and fluorinion selective electrode are inserted in the flow cell. In a process of titration, both the potentiometric of mercury ion and the mixed proportion of reactants at each titration point can be obtained simultaneously from the two electrodes, and then the concentration of each component in the mixture can be obtained from the titration curves by multivariate calibration method. The method is free of volumetric and time measurements, and reduces the consumption of reagents and samples. The method is also very quick in analysis rapidity. The method has been applied for the simultaneous determination of copper, lead and zinc in alloy samples with the relative standard deviation of 0.18%~0.45% and the recovery of 99.5%~101.6%.

scholarly journals Simultaneous determination of copper, silver and cadmium in high-purity zinc by ICP-AES after extraction and back-extraction.

1997 ◽  
Vol 46 (2) ◽  
pp. 153-158 ◽  
Author(s):  
Hiroshi ONO ◽  
Noriko KANKE ◽  
Nobuo UEHARA ◽  
Tokuo SHIMIZU ◽  
Yoshio SHIJO
Keyword(s):  
Simultaneous Determination ◽  
High Purity ◽  
Back Extraction ◽  
Determination Of Copper

scholarly journals Simultaneous Determination of Copper, Lead, and Cadmium at Hexagonal Mesoporous Silica Immobilized Quercetin Modified Carbon Paste Electrode

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Fangquan Xia ◽  
Xin Zhang ◽  
Changli Zhou ◽  
Danzi Sun ◽  
Yanmin Dong ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Simultaneous Determination ◽  
Carbon Paste Electrode ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Lead And Cadmium ◽  
Paste Electrode ◽  
Determination Of Copper ◽  
Copper Lead

A new method was developed for simultaneous determination of copper, lead, and cadmium, based on their voltammetric response at a carbon paste electrode modified with hexagonal mesoporous silica (HMS) immobilized quercetin (HMS-Qu/CPE). Compared with quercetin modified carbon paste electrode (Qu/CPE) and quercetin ionic liquid modified carbon paste electrode (Qu-IL/CPE), the HMS-Qu/CPE exhibited improved selectivity and high sensitivity toward the detection of copper, lead, and cadmium. The properties of the HMS-Qu/CPE in 0.1 M HCOONa-HCl buffer solution (pH4.7) were investigated by adsorptive stripping voltammetry (ASV) and electrochemical impedance spectroscopy (EIS). The electrochemical behavior of copper, lead, and cadmium at the modified electrodes and factors affecting the preconcentration procedures were also investigated. Detection limits of 5.0, 0.8, 1.0 nM for copper, lead, and cadmium were obtained, respectively. The method is simple, fast, sensitive, and selective, and is successfully applied to soil sample.

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