The roles of pH extraction and colloidal protein solubility in the optimization of spectrophotometric nitrite determination in meat products via response surface methodology von Rincón, F., Martínez, B., Pérez-Olmos, R., Berzosa, A.

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Simultaneous determination of potassium and total fluoride in toothpastes using a SIA system with two potentiometric detectors von Pérez-Olmos, R., Soto, J.C., Zárate, N., Díez, I.

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New PVC Nitrate-Selective Electrode:  Application to Vegetables and Mineral Waters von Kong Thoo Lin, P, Araujo, A. N, Montenegro, M. C. B. S. M, Pérez-Olmos, R

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Application of sequential injection analysis (SIA) to food analysis von Pérez-Olmos, R., Soto, J.C., Zárate, N., Araújo, A.N., Lima, J.L.F.C., Saraiva, M.L.M.F.S.

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Sequential injection analysis using electrochemical detection: A review von Pérez-Olmos, R., Soto, J.C., Zárate, N., Araújo, A.N., Montenegro, M.C.B.S.M.

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Simultaneous Determination of Potassium and Nitrate Ions in Mouthwashes Using Sequential Injection Analysis with Potentiometric Detection von ZÁRATE, N., IRAZU, E., ARAÚJO, A. N., M. C. B. S. M. MONTENEGRO, PÉREZ-OLMOS, R.

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Construction and evaluation of ion selective electrodes for nitrate with a summing operational amplifier. Application to tobacco analysis von Pérez-Olmos, R, Rios, A, Fernández, J.R, Lapa, R.A.S, Lima, J.L.F.C

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Tubular detectors for flow-injection potentiometric determination of tetrafluoroborate in electroplating baths von Araújo, A.N., Etxebarria, M.B., Lima, J.L.F.C., Montenegro, M.C.B.S.M., Pérez Olmos, R.

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Comparative study of ion-selective electrodes versus flame emission photometry techniques for the determination of sodium and potassium in Spanish wines von Pérez-Olmos, R., Echevarría, J.

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Simultaneous assay of nitrite, nitrate and chloride in meat products by flow injection von FERREIRA, I. M. P. L. V. O, LIMA, J. L. F. C, MONTENEGRO, M. C. B. S. M, PEREZ OLMOS, R, RIOS, A

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Potentiometric determination of nitrate in products used for the treatment of dentinal hypersensitivity von Pérez-Olmos, Ricardo, Bezares, Pilar, Pérez, Javier

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Sequential potentiometric determination of chloride and nitrate in meat products von Pérez-Olmos, R., Herrero, R., Lima, J.L.F.C., Montenegro, M.C.B.S.M.

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Flow injection analysis of high chloride levels in electroplating baths using on-line dialysis and potentiometric detection von ARAUJO, A. N, ETXEBARRIA, M. B, LIMA, J. L. F. C, MONTENEGRO, M. C. B. S. M, PEREZ OLMOS, R

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Determination of fluoride in Spanish vinegars von Garcia, C., Lapa, R.A.S., Lima, J.L.F.C., Pérez-Olmos, R.

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Construction and evaluation of ion-selective electrodes for potassium and calcium with a summing operational amplifier. Application to wine analysis von PEREZ-OLMOS, R, RIOS, A, LAPA, R. A. S, LIMA, J. L. F. C

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Potentiometric method for the determination of sodium in Spanish cheeses von Pérez-olmos, Ricardo, Echevarria, Begoña, Castresana, Jose M.

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Sequential Injection Analysis of Lead Using Time-based Colorimetric Detection and Preconcentration on an Anionic-Exchange Resin von ARACAMA, Nestor Zárate, ARAÚJO, Alberto N., PEREZ-OLMOS, Ricardo

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Flow injection analysis of fluoride in electroplating baths with potentiometric detection von PEREZ-OLMOS, R, ETXEBARRIA, M. B, LIMA, J. L. F. C, MONTENEGRO, M. C. B. S. M

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Construction and evaluation of ion selective electrodes for perchlorate with a summing operational amplifier : application to pyrotechnics mixtures analysis von PEREZ-OLMOS, R, RIOS, A, MARTIN, M. P, LAPA, R. A. S, LIMA, J. L. F. C

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Construction and evaluation of tetrafluoroborate selective electrodes : application to plating baths analysis von PEREZ-OLMOS, R, ETXEBARRIA, B, RUIZ, M. P, LIMA, J. L. F. C, MONTENEGRO, M. C. B. S. M, ALCADA, M. N. M. P

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