Search Results - "Montenegro, M. C. B. S."

A simpler potentiometric method for histamine assessment in blood sera by Pereira, A. R., Araújo, A. N., Montenegro, M. C. B. S. M., Amorim, C.M.P. Gomes

“…Histamine intolerance results from a disequilibrium of accumulated histamine and the capacity for histamine degradation. An impaired histamine degradation…”
Get full text

Ecotoxicological aspects related to the presence of pharmaceuticals in the aquatic environment by Santos, Lúcia H.M.L.M., Araújo, A.N., Fachini, Adriano, Pena, A., Delerue-Matos, C., Montenegro, M.C.B.S.M.

“…Pharmaceuticals are biologically active and persistent substances which have been recognized as a continuing threat to environmental stability. Chronic…”
Get full text

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

“…The paper refers the analytical potentialities of the oxa-azamacrocycles as potentiometric ionophores for the construction of electrodes selective to nitrate…”
Get full text

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

“…Two methods for the determination of potassium nitrate in mouthwashes, used against dentin hypersensitivity, have been simultaneously implemented in an…”
Get full text

Modeling, Structural, and Spectroscopic Studies of Lanthanide-Organic Frameworks by Rodrigues, Marcelo O, Paz, Filipe A. Almeida, Freire, Ricardo O, de Sá, Gilberto F, Galembeck, André, Montenegro, Maria C. B. S. M, Araújo, Alberto N, Alves, S

“…In this paper, we report the hydrothermal synthesis of three lanthanide-organic framework materials using as primary building blocks the metallic centers Eu3+,…”
Get full text

A Reflectance Flow-through Thionine Sol-gel Sensor for the Determination of Se(IV) by CARVALHIDO, Joana A. E., ALMEIDA, Agostinho A., ARAÚJO, Alberto N., Maria C. B. S. M. MONTENEGRO

“…In this work, a reversible sensor to assess the total Se(IV) content in samples is described. Pre-activated glass slides were spin-coated with 100 μL of a 20-h…”
Get full text

Sequential Injection Lab-on-Valve Procedure for the Determination of Amantadine Using Potentiometric Methods by Amorim, C. G., Araújo, A. N., Montenegro, M. C. B. S. M., Silva, V. L.

“…Amantadine potentiometric detectors were developed, evaluated and incorporated in a SIA‐LOV manifold in order to accomplish the control of pharmaceutical…”
Get full text

Sulfadiazine-selective determination in aquaculture environment: Selective potentiometric transduction by neutral or charged ionophores by Almeida, S.A.A., Heitor, A.M., Montenegro, M.C.B.S.M., Sales, M.G.F.

“…Solid-contact sensors for the selective screening of sulfadiazine (SDZ) in aquaculture waters are reported. Sensor surfaces were made from PVC membranes doped…”
Get full text

Novel LTCC-potentiometric microfluidic device for biparametric analysis of organic compounds carrying plastic antibodies as ionophores: Application to sulfamethoxazole and trimethoprim by Almeida, S.A.A., Arasa, E., Puyol, M., Martinez-Cisneros, C.S., Alonso-Chamarro, J., Montenegro, M.C.B.S.M., Sales, M.G.F.

“…► Designing plastic antibodies by surface imprinting on silica spheres. ► Plastic antibodies as potentiometric ionophores for antibiotic drugs. ► LTCC…”
Get full text

Montmorillonite Nanoclay and Formulation with Satureja montana Essential Oil as a Tool to Alleviate Xanthomonas euvesicatoria Load on Solanum lycopersicum by Oliveira-Pinto, Paulo R., Mariz-Ponte, Nuno, Gil, Renato L., Cunha, Edite, Amorim, Célia G., Montenegro, Maria C. B. S. M., Fernandes-Ferreira, Manuel, Sousa, Rose M. O. F., Santos, Conceição

“…Bacterial spot (BS) of tomato (S. lycopersicum), caused by Xanthomonas spp., namely X. euvesicatoria (Xeu), is one of the major threats for the production of…”
Get full text

Exploiting sequential injection analysis with lab-on-valve and miniaturized potentiometric detection Epinephrine determination in pharmaceutical products by AMORIM, C. G, ARAUJO, A. N, MONTENEGRO, M. C. B. S. M

“…Miniaturized potentiometric units were constructed, evaluated and incorporated in a SIA-LOV manifold in order to the control of pharmaceutical analysis. The…”
Get full text

Optimizing potentiometric ionophore and electrode design for environmental on-site control of antibiotic drugs: Application to sulfamethoxazole by Almeida, S.A.A., Truta, Liliana A.A.N.A., Queirós, Raquel B., Montenegro, M.C.B.S.M., Cunha, Alexandre L., Sales, M.G.F.

“…▸ Plastic antibodies designed by surface imprint on graphitic carbon nanostructures. ▸ An electrical-based sensor made from pipette tips. ▸ On-site detection…”
Get full text

Cyclodextrin-based potentiometric sensors for midazolam and diazepam by Amorim, C.G., Araújo, A.N., Montenegro, M.C.B.S.M., Silva, V.L.

“…In this work the implementation of benzodiazepine ion-selective electrodes for pharmaceutical formulations control is described. The solid-contact electrodes…”
Get full text

Rapid automated method for on-site determination of sulfadiazine in fish farming: a stainless steel veterinary syringe coated with a selective membrane of PVC serving as a potentiometric detector in a flow-injection-analysis system by Almeida, S. A. A., Amorim, L. R., Heitor, A. H., Montenegro, M. C. B. S. M., Barbosa, J., Sá, L. C., Sales, M. G. F.

“…Sulfadiazine is an antibiotic of the sulfonamide group and is used as a veterinary drug in fish farming. Monitoring it in the tanks is fundamental to control…”
Get full text

Development of a Multicommutated Flow System with Chemiluminometric Detection for Quantification of Gentamicin in Pharmaceuticals by Santos, Lúcia H. M. L. M., Araújo, A. N., Reis, Boaventura F., Montenegro, M. C. B. S. M.

“…A new flow procedure based on multicommutation with chemiluminometric detection was developed to quantify gentamicin sulphate in pharmaceutical formulations…”
Get full text

Potentiometric detection in liquid chromatographic systems: An overview by Gil, R.L., Amorim, C.G., Montenegro, M.C.B.S.M., Araújo, A.N.

“…•Potentiometry is a well-established technique in batch and flow analysis.•Potentiometric detectors coupled to liquid chromatography are in research…”
Get full text

Biosensing based on pencil graphite electrodes by Torrinha, Álvaro, Amorim, Célia G., Montenegro, Maria C.B.S.M., Araújo, Alberto N.

“…Pencil leads have been increasingly used as electrode material in electrochemical applications. Commonly denominated as pencil graphite electrodes (PGE), they…”
Get full text

Tetracycline Potentiometric Sensor Based on Cyclodextrin for Pharmaceuticals and Waste Water Analysis by Cunha, Cláudia O., Silva, Rita C. R., Amorim, Célia G., Júnior, Severino A., Araújo, Alberto N., Montenegro, Maria C. B. S. M., Silva , Valdinete L.

“…In this work, the construction and performance evaluation of PVC membranes ion‐selective electrodes for the determination of tetracycline type antibiotics is…”
Get full text

Photo-induced chemiluminometric determination of Karbutilate in a continuous-flow Multicommutation assembly by Amorim, C.M.P.G., Albert-García, J.R., Montenegro, M.C.B.S., Araújo, A.N., Calatayud, J. Martínez

“…The present paper deals with the chemiluminescent determination of the herbicide Karbutilate on the basis of its previous photodegradation by using a…”
Get full text

Challenges in the design of electrochemical sensor for glyphosate-based on new materials and biological recognition by Zambrano-Intriago, Luis Angel, Amorim, Célia G., Rodríguez-Díaz, Joan Manuel, Araújo, Alberto N., Montenegro, Maria C.B.S.M.

“…Glyphosate (GLY) is the main ingredient in the weed killer Roundup and the most widely used pesticide in the world. Studies of the harmful effects of GLY on…”
Get full text