Výsledky vyhledávání - "Silva, Douglas G."

Determination of lead in water from reservoirs for human supply using atomic absorption spectrometry

Autor: Da Silva, Douglas G., Santos, Darlene P. Dos, Evellyn C. G. Souza, Sulene A. Araújo, Aleluia, Augusto C. M.

This paper describes a procedure for the determination of Pb in water by employing a solid-phase preconcentration system using flame atomic absorption spectrometry (F AAS). The procedure was based on percolation of the sample onto a polyurethane foam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b7004089d004f282e300be46c8c1d84

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Application of simplex optimization in the development of an automated online preconcentration system for manganese determination

Autor: Santos, Queila O. dos, Novaes, Cléber G., Bezerra, Marcos A., Lemos, Valfredo A., Moreno, Islania, Silva, Douglas G. da, Santos, Leandro dos

Publikováno v: Journal of the Brazilian Chemical Society v.21 n.12 2010
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 21, Issue: 12, Pages: 2340-2346, Published: DEC 2010

An automated procedure was developed to determine trace amounts of manganese from vegetal leaves and river waters using flame atomic absorption spectrometry (FAAS) after online preconcentration of this metal using an Amberlite XAD-4 minicolumn modifi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::87ca1cf12c57b744110d5780aaf46669
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010001200022

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