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| Issue Date | Title | Author(s) | | 2004 | Doehlert matrix: a chemometric tool for analytical chemistry—review | Ferreira, Sergio Luis Costa; Santos, Walter Nei Lopes dos; Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida; Barros Neto, Benício de; Bosque-Sendra, Juan Manuel |
| 2004 | Multivariate Optimization in Preconcentration Procedure for Manganese Determination in Seawater Samples by FAAS | Ferreira, Adriana C.; Korn, Maria das Graças Andrade; 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 |
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