Synthesis of amberlite XAD-2-PC resin for preconcentration and determination of trace elements in food samples by flame atomic absorption spectrometry von Lemos, Valfredo Azevedo, Gonçalves da Silva, Douglas, Lago de Carvalho, Anaildes, de Andrade Santana, Débora, dos Santos Novaes, Geisiane, Souza dos Passos, Adenilde

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Determination of cobalt, copper and nickel in food samples after pre-concentration on a new pyrocatechol-functionalized polyurethane foam sorbent von Lemos, Valfredo Azevedo, dos Passos, Adenilde Souza, dos Santos Novaes, Geisiane, de Andrade Santana, Débora, de Carvalho, Anaildes Lago, da Silva, Douglas Gonçalves

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Determination of copper in biological samples by flame atomic absorption spectrometry after precipitation with Me-BTAP von Lemos, Valfredo A, Novaes, Geisiane dos S, de Carvalho, Anaildes L, Gama, Ednilton M, Santos, Aldenor G

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