Thermal decomposition of various synthetic manganese oxides (MnO, Mn3O4, Mn2O3, MnOOH) and a natu... more Thermal decomposition of various synthetic manganese oxides (MnO, Mn3O4, Mn2O3, MnOOH) and a natural manganese dioxide (MnO2) from Gabon was studied with the help of termogravimetry in inert, oxidizing and reducing atmospheres. The compounds were characterized by XRD and electrochemical activity was tested by cyclic voltammetry using a carbon paste electrode. The natural manganese dioxide showed the best oxidizing and
The results from a study of the presence and temporal variability of linear alkylbenzenes (LABs) ... more The results from a study of the presence and temporal variability of linear alkylbenzenes (LABs) and polychlorinated biphenyls (PCBs) in sewage sludge are presented in this work. The sewage sludges, with anaerobic treatment, were originated in the Arazuri (Pamplona, Spain) wastewater primary treatment plant, which receives urban and industrial wastewaters. The organic pollutants extracted from the sewage sludge by a Soxhlet apparatus. Then, PCBs and LABs were separated from the rest of the pollutants on a chromatographic column. Some different detectors were flame ionization (FID), electron capture (ECD) and mass spectroscopy (MS). The results showed that LABs concentration varied between 1.4 and 73.0 mg kg−1 dry matter (d.m.). PCBs appear in smaller quantity, between 0.050 and 0.929 mg kg−1 (d.m.). The factor analysis of the results allowed verification of the different origin of PCBs and LABs.
Terbinafine is adsorbed on a hanging mercury drop electrode at pH 6.0 and gives a single wave at ... more Terbinafine is adsorbed on a hanging mercury drop electrode at pH 6.0 and gives a single wave at −1.47 vs.AgAgCl reference electrode, due to olefinic double bond reduction. The electrochemical process is irreversible and fundamentally controlled by adsorption. A systematic study of the several instrumental and accumulation variables affecting the adsorptive stripping (AdS) response was carried out using square wave
Page 1. Cathodic Stripping Voltammetric Determination of Doxazosin in Urine and Pharmaceutical Ta... more Page 1. Cathodic Stripping Voltammetric Determination of Doxazosin in Urine and Pharmaceutical Tablets Using Carbon Paste Electrodes Adela Arranz, Susana Fernández de Betono, José M. Moreda, Adolfo Cid and Juan ...
Thermal decomposition of various synthetic manganese oxides (MnO, Mn3O4, Mn2O3, MnOOH) and a natu... more Thermal decomposition of various synthetic manganese oxides (MnO, Mn3O4, Mn2O3, MnOOH) and a natural manganese dioxide (MnO2) from Gabon was studied with the help of termogravimetry in inert, oxidizing and reducing atmospheres. The compounds were characterized by XRD and electrochemical activity was tested by cyclic voltammetry using a carbon paste electrode. The natural manganese dioxide showed the best oxidizing and
The results from a study of the presence and temporal variability of linear alkylbenzenes (LABs) ... more The results from a study of the presence and temporal variability of linear alkylbenzenes (LABs) and polychlorinated biphenyls (PCBs) in sewage sludge are presented in this work. The sewage sludges, with anaerobic treatment, were originated in the Arazuri (Pamplona, Spain) wastewater primary treatment plant, which receives urban and industrial wastewaters. The organic pollutants extracted from the sewage sludge by a Soxhlet apparatus. Then, PCBs and LABs were separated from the rest of the pollutants on a chromatographic column. Some different detectors were flame ionization (FID), electron capture (ECD) and mass spectroscopy (MS). The results showed that LABs concentration varied between 1.4 and 73.0 mg kg−1 dry matter (d.m.). PCBs appear in smaller quantity, between 0.050 and 0.929 mg kg−1 (d.m.). The factor analysis of the results allowed verification of the different origin of PCBs and LABs.
Terbinafine is adsorbed on a hanging mercury drop electrode at pH 6.0 and gives a single wave at ... more Terbinafine is adsorbed on a hanging mercury drop electrode at pH 6.0 and gives a single wave at −1.47 vs.AgAgCl reference electrode, due to olefinic double bond reduction. The electrochemical process is irreversible and fundamentally controlled by adsorption. A systematic study of the several instrumental and accumulation variables affecting the adsorptive stripping (AdS) response was carried out using square wave
Page 1. Cathodic Stripping Voltammetric Determination of Doxazosin in Urine and Pharmaceutical Ta... more Page 1. Cathodic Stripping Voltammetric Determination of Doxazosin in Urine and Pharmaceutical Tablets Using Carbon Paste Electrodes Adela Arranz, Susana Fernández de Betono, José M. Moreda, Adolfo Cid and Juan ...
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