Determination of the total cadmium, copper, lead and zinc concentrations and their labile species fraction in apple beverages by flow-through anodic stripping chronopotentiometry

2017 ◽  
Vol 225 ◽  
pp. 220-229 ◽  
Author(s):  
Dominika Jedryczko ◽  
Paweł Pohl ◽  
Maja Welna
Keyword(s):  
Lead And Zinc ◽  
Stripping Chronopotentiometry ◽  
Anodic Stripping ◽  
Zinc Concentrations ◽  
Flow Through ◽  
Copper Lead

Determination of Heavy Metals in Foods by Anodic Stripping Voltammetry after Sample Decomposition with Sodium and Potassium Nitrate Fusion

1975 ◽  
Vol 58 (4) ◽  
pp. 777-780 ◽  
Author(s):  
Walter Holak
Keyword(s):  
Heavy Metals ◽  
Nitric Acid ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Lead And Zinc ◽  
Relative Standard ◽  
Anodic Stripping ◽  
Sodium And Potassium ◽  
Copper Lead

Abstract A method is described for the simultaneous determination of several heavy metals in foods. The sample is predigested with nitric acid and decomposed completely by heating with a mixture of sodium and potassium nitrates. The resultant melt containing the metals is then dissolved in dilute nitric acid. After the pH is adjusted to an appropriate value, the metals, such as cadmium, copper, lead, and zinc, are determined by anodic stripping voltammetry. The average recoveries of these metals added to 5 commodities were 98, 98, 96, and 104%, respectively. The relative standard deviations, based on data from analyses of a commodity containing measurable levels of copper, lead, and zinc, were 12.0, 13.0, and 9.7%, respectively.

scholarly journals The Effect of Salinity on the Release of Copper (Cu), Lead (Pb) And Zinc (Zn) from Tailing

2010 ◽  
Vol 1 (1) ◽  
pp. 16-22
Author(s):  
Apriani Sulu Parubak ◽  
Eko Sugiharto ◽  
Mudjiran Mudjiran
Keyword(s):  
Limit Of Detection ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Hanging Mercury Drop Electrode ◽  
Lead And Zinc ◽  
Anodic Stripping ◽  
Determination Of Copper ◽  
Copper Lead

The effects of salinity on the release of copper (Cu), lead (Pb) and zinc (Zn) in tailing sediment have been studied by stripping voltammetry. The purpose of the research is to know the effect of salinity on the release of metals with certain pH, conductivity and variety of metals. Simultaneous determination of copper, lead and zinc in tailing was done by Differential Pulse Anodic Stripping Voltammetry (DPASV) onto hanging mercury drop electrode (HMDE) and nitric acid 65% as support electrolyte. The limit of detection for this method 0.60 µg/L, 0.150 µg/L and 0.238 µg/L for copper, lead and iMc respectively. The stripping solution of 300/00 salinity with pH= 7.85, conductivity= 46.62 mS/cm gives the amounts of released metals as follows :14.867 µg/L Cu, 0.976 µg/L Pb and 6.224 µg/L Zn. These results are higher as compared with the results from 15 0/00 salinity with pH= 7.66, conductivity= 23.22 mS/cm that give released metals of Cu= 7.988 µg/L, Pb= 0.311 µg/L and Zn= 4.699 µg/L. the results from ANOVA suggest that this is due to different in salinity of the solution. It also found that the conductivity does not give any effect. It can be concluded that the higher salinity will that give higher concentration or released metals.

Cadmium, Copper, Lead and Zinc Concentrations in Female and Embryonic Pacific Sharpnose Shark (Rhizoprionodon longurio) Tissues

2014 ◽  
Vol 93 (5) ◽  
pp. 532-535 ◽  
Author(s):  
M. G. Frías-Espericueta ◽  
N. G. Cardenas-Nava ◽  
J. F. Márquez-Farías ◽  
J. I. Osuna-López ◽  
M. D. Muy-Rangel ◽  
...  
Keyword(s):  
Lead And Zinc ◽  
Zinc Concentrations ◽  
Copper Lead
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