Ridvan Nunes Fernandes

Flow system exploiting multicommutation to increase sample residence time for improved sensitivity. Simultaneous determination of ammonium and ortho-phosphate in natural water

Ridvan Nunes Fernandes · Talanta · 2002 · 43 citations

Improved Sensitivity, Sample Residence Time, Water Monitoring +4

Multicommutation in flow analysis exploiting a multizone trapping approach: spectrophotometric determination of boron in plants

Cristiane de Azevedo Tumang, Gilmara Caseri de Luca, Ridvan Nunes Fernandes et al. · Analytica Chimica Acta · 1998 · 31 citations

Plant Physiology, Spectrophotometric Determination, Environmental Chemistry +8

Batch injection analysis with electrochemical detection for the simultaneous determination of the diuretics furosemide and hydrochlorothiazide in synthetic urine and pharmaceutical samples

Eduardo Fonseca Silva, Auro Atsushi Tanaka, Ridvan Nunes Fernandes et al. · Microchemical Journal · 2020 · 30 citations

Pharmaceutical Science, Synthetic Urine, Electrochemical Detection +12

Multi-task flow system for potentiometric analysis: its application to the determination of vitamin B6 in pharmaceuticals

Ridvan Nunes Fernandes, M. Goreti F. Sales, Boaventura F. Reis et al. · Journal of Pharmaceutical and Biomedical Analysis · 2001 · 29 citations

Process Analytical Technology, Bioanalysis, Multi-task Flow System +17

Determination of the catechin contents of bioactive plant extracts using disposable screen-printed carbon electrodes in a batch injection analysis (BIA) system

Geyse Adriana Corrêa Ribeiro, Cláudia Quintino da Rocha, William B. Veloso et al. · Microchemical Journal · 2019 · 24 citations

Bioassay-guided Isolation, Bioactive Plant Extracts, Medicine +9