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| Issue Date | Title | Author(s) | | 1996 | Derivative spectrophotometric determination of nickel using Br-PADAP | Ferreira, Sergio Luis Costa; Costa, Antonio Celso Spinola; Jesus, Djane S. de |
| 2005 | Field sampling system for determination of cadmium and nickel in fresh water by flame atomic absorption spectrometry | Santos, Walter Nei Lopes dos; Santos, Carla M. dos; Ferreira, Sergio Luis Costa |
| 2004 | Doehlert matrix for optimisation of procedure for determination of nickel in saline oil-refinery effluents by use of flame atomic absorption spectrometry after preconcentration by cloud-point extraction | Bezerra, Marcos de Almeida; Conceição, André L. B.; Ferreira, Sergio Luis Costa |
| 2000 | Nickel and zinc determination by flow-injection solid-phase spectrophotometry exploiting different sorption rates | Teixeira, Leonardo Sena Gomes; Rocha, Fábio Rodrigo Piovezani; Korn, Mauro; Reis, Boaventura F.; Ferreira, Sergio Luis Costa; Costa, Antonio Celso Spinola |
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