1998

BARNES, R. M.; NÓBREGA, J. A.; QUINAIA, S. P.; BLANCO, T. A Fast Microwave-Assisted, Acid-Vapor, Steam-Cleaning Procedure For Autosampler Cups. Spectrochimica Acta. Part B, Atomic Spectroscopy, Holanda, v. 53B, n. 5, p. 769-771, 1998.

BRUHN, C. G.; NÓBREGA, J. A. Atomizacion electrotermica por filamento de tungsteno: una alternativa de bajo costo para paises en desarrollo. Química e Indústria, p. 37-42, 1998.

BRUHN, C. G.; NÓBREGA, J. A.; NEIRA, J. Y.; VALENZUELA, G. D. Chemical Modifiers In A Tungsten Coil Electrothermal Atomizer. Part 1. Determination Of Pb In Hair And Blood. Journal of Analytical Atomic Spectrometry, Inglaterra, v. 13, n. 1, p. 29-35, 1998.

KRUSHEVSKA, A.; NÓBREGA, J. A.; WAHEED, S.; BARNES, R. M.; AMARISIRIWARDENA, D. Reducing Polyatomic Interferences In ICP-MS Determination Of Cr And V In Biofluids And Tissues. Applied Spectroscopy, Estados Unidos, v. 52, n. 2, p. 205-211, 1998.

NEIRA, J. Y.; NÓBREGA, J. A.; VALENZUELA, G. D.; MOYA, J.; BRUHN, C. G. Interfase Y Software de Control Para Operar En Sincronismo Un Automuestrador Y Un Atomizador Electrotérmico Por Filamento de Tungsteno En Espectrofotometria de Absorción Atómica. Química Nova, Brasil, v. 21, n. 4, p. 490-492, 1998.

NÓBREGA, J. A.; ROCHA, F. R. P.; GOUVEIA, S. T. Sample zone cutting by relocation of a coiled reactor: an alternative to increase manifold versatility. Journal Of Flow Injection Analysis, Japao, v. 15, n. 1, p. 47-59, 1998.

NÓBREGA, J. A.; KRUG, F. J.; LIMA, E. C.; NOGUEIRA, A. R. A. Determination of ytterbium in biological materials by tungsten coil electrothermal atomic absorption spectrometry. Talanta, Estados Unidos, v. 47, n. 3, p. 613-623, 1998.

NOGUEIRA, A. R. A.; SOUZA, G. B.; ARRUDA, M. A. Z.; MIYAZAWA, M. Catalytic Determination Of Cobalt By Flow Injection Spectrophotometry In Animal Faeces Using Hydrochloric Acid As Extractant Solution. Animal Feed Science and Technology, Elsevier, v. 74, p. 79-84, 1998.

NOGUEIRA, A. R. A.; MOCKIUTI, F.; SOUZA, G. B.; PRIMAVESI, O. Flow Injection Spectrophotometric Catalytic Determination Of Iodine In Milk. Analytical Sciences, Toqui. Japão, v. 14, p. 559-564, 1998.

OLIVEIRA, A. F.; NÓBREGA, J. A.; FATIBELLO-FILHO, O.; DINIZ, M. C. T. Sequential Determination By Confluent Reagent Introduction In The Sample Loop: System Characteristics And Applications. Analytica Chimica Acta, Holanda, v. 366, n. 1-3, p. 281-285, 1998.

PEREIRA FILHO, E. R.; JARBAS, J. R.; ROHWEDDER; ARRUDA; M. A. Z. On-line microwave slurry sample digestion using flow systems for the spectrophotometric determination of iron in seafood. Analyst (London), v. 123, n. 5, p. 1023-1028, 1998.

SILVA, F. V.; NOGUEIRA, A. R. A.; SOUZA, G. B.; ZAGATTO, E. A. G. A Polyvalent Flow Injection System For Spectrophotometric Plant Analysis. Analytica Chimica Acta, Amsterdam, Elsevier, v. 370, p. 39-46, 1998.

SILVA, R. L. G. N. P.; NÓBREGA, J. A.; SILVA, C. S.; NEVES, E. F. A. Flow Injection Spectrophotometric Determination Of Free And Total Sulfite In Wines Based On The Induced Oxidation Of Mn(Ii). Analytical Letters, Inglaterra, v. 31, n. 13, p. 2195-2208, 1998.