1997
DOI: 10.1590/s0100-40421997000400012
|View full text |Cite
|
Sign up to set email alerts
|

Análise potenciométrica de redissolução com ultramicroeletrodos: fundamentos e aplicações na determinação de metais traços

Abstract: PSA) is described with emphasis on ultramicroelectrode applications with a laboratory developed computer based instrumentation. The technique potentialities as compared with the voltammetric approach are pointed out based on the current literature. Some results of trace metals analysis including zinc, cadmium, lead and copper in vinegar and canned food samples are presented. The mainly advantage found in our laboratory was the technique capability to analyse natural samples with minimum matrix interference and… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

0
1
0
4

Year Published

1998
1998
2009
2009

Publication Types

Select...
3
2

Relationship

0
5

Authors

Journals

citations
Cited by 5 publications
(5 citation statements)
references
References 35 publications
(44 reference statements)
0
1
0
4
Order By: Relevance
“…As figuras 14 e 15 mostram os potenciogramas típi-cos para a determinação de Zn 2+ em amostra de líquido de conserva de palmito in natura e Pb 2+ em amostra de líquido de conserva de cogumelo com um UME de Pt de 10 µm recoberto com Hg, juntamente com as respectivas curvas analíticas. Esta técnica apresenta inúmeras vantagens que estão discutidas em um trabalho submetido a esta revista 49 . …”
Section: B Eletroanalíticaunclassified
“…As figuras 14 e 15 mostram os potenciogramas típi-cos para a determinação de Zn 2+ em amostra de líquido de conserva de palmito in natura e Pb 2+ em amostra de líquido de conserva de cogumelo com um UME de Pt de 10 µm recoberto com Hg, juntamente com as respectivas curvas analíticas. Esta técnica apresenta inúmeras vantagens que estão discutidas em um trabalho submetido a esta revista 49 . …”
Section: B Eletroanalíticaunclassified
“…[2][3][4] As compared to voltammetric stripping analysis (VSA), PSA has several advantages, such as smaller dependence on the electrode surface reproducibility, robustness with respect to the presence of some electroactive organic species, applicability to the analysis of solutions with low ionic strength, no need for deoxygenation of the sample, lower background contributions. 5,6 In addition, PSA can be carried out with a simple and inexpensive instrumentation, which can be easily automated. In fact, the only physical parameters that need to be measured are potential and time.…”
Section: Introductionmentioning
confidence: 99%
“…A aplicação da eletroanálise com métodos bastante sensíveis para a medida de traços e ultra-traços de metais tornou-se comum nos últimos anos (NOBRE; MAZO, 1997 …”
Section: Voltametriaunclassified