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| Issue Date | Title | Author(s) | | 2006 | A pre-concentration procedure using coprecipitation for determination of lead and iron in several samples using flame atomic absorption spectrometry | Ferreira, Sergio Luis Costa; Saracoglu, S.; Soylak, Mustafa; Peker, D. S. Kacar; Elci, L.; Santos, Walter Nei Lopes dos; Lemos, Valfredo Azevedo |
| 2008 | Multivariate optimization of a solid phase microextraction-headspace procedure for the determination of benzene, toluene, ethylbenzene and xylenes in effluent samples from a waste treatment plant | Gaujac, Alain; Emídio, Elissandro Soares; Navickiene, Sandro; Ferreira, Sergio Luis Costa; Dórea, Haroldo Silveira |
| 2004 | Factorial design for multivariate optimization of an on-line preconcentration system for platinum determination by ultrasonic nebulization coupled to inductively coupled plasma optical emission spectrometry | Ferreira, Sergio Luis Costa; Cerutti, S.; Salonia, J. A.; Olsina, R. A.; Martinez, L. D. |
| 2005 | Use of factorial design for optimization of microwave-assisted digestion of lubricating oil | Costa, Letícia M.; Ferreira, Sergio Luis Costa; Nogueira, Ana Rita de Araujo; Nóbrega, Joaquim de Araújo |
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