Simultaneous determination of tin and lead by anodic stripping voltammetry in aqueous-alcoholic medium. Application to the direct determination of these elements in canned foods

1981 ◽  
Vol 26 (2) ◽  
pp. 192-197 ◽  
Author(s):  
P. Debacker ◽  
J.L. Vandenbalck ◽  
G.J. Patriarche ◽  
G.D. Christian
Author(s):  
Larissa Pinto Silva ◽  
Náira Da Silva Campos ◽  
Thalles Pedrosa Lisboa ◽  
Lucas Vinícius de Faria ◽  
Maria Auxiliadora Costa Matos ◽  
...  

2005 ◽  
Vol 37 (4) ◽  
pp. 709-713 ◽  
Author(s):  
Mónica Cecilia Vargas Mamani ◽  
Luiz Manoel Aleixo ◽  
Mônica Ferreira de Abreu ◽  
Susanne Rath

1983 ◽  
Vol 66 (6) ◽  
pp. 1414-1420
Author(s):  
Eric W Zink ◽  
Phillip H Davis ◽  
Reginald M Griffin ◽  
Wayne R Matson ◽  
Robert A Moffitt ◽  
...  

Abstract A method for the direct determination of lead in evaporated milk and in fruit juice with no prior sample digestion was successfully collaborated by 13 laboratories. The anodic stripping voltammetric (ASV) method studied consisted of adding 0.2 mL aliquots of evaporated milk or 0.3 mL aliquots of fruit juice to 2.9 mL of a dechelating reagent, Metexchange. The reagent-sample mixture is then analyzed for lead by ASV with no further sample preparation. Each collaborator received 24 samples, 2 each at 5 different levels (0.07-0.70 ppm for spiked evaporated milk and 0.09-0.87 ppm for spiked apple juice) along with duplicate practice samples of labeled lead content at each of 2 levels for each sample type. All unknowns were coded with random numbers. Approximately 69% of the reporting laboratories had never analyzed either evaporated milk or fruit juice for lead. Average time between receipt of samples and reporting of results was 1.6 days for all laboratories. The pooled variations between duplicate determinations for apple juice and evaporated milk were 0.00059 and 0.00043, respectively. The method was adopted official first action for both fruit juice and evaporated milk.


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