A5062030604- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Heavy metals in environment
- Water Quality and Pollution Assessment
- Analytical Methods in Pharmaceuticals
- Heavy Metal Exposure and Toxicity
- Water Quality Monitoring and Analysis
- Environmental Toxicology and Ecotoxicology
- Pharmaceutical and Antibiotic Environmental Impacts
- Mercury impact and mitigation studies
- Molecular Sensors and Ion Detection
- Toxic Organic Pollutants Impact
- Electrical and Bioimpedance Tomography
- Analytical chemistry methods development
- Advanced Nanomaterials in Catalysis
- Reproductive biology and impacts on aquatic species
- Inorganic and Organometallic Chemistry
- Science and Education Research
- Pharmacological Effects and Toxicity Studies
- Trauma and Emergency Care Studies
- Metal complexes synthesis and properties
- Antibiotics Pharmacokinetics and Efficacy
- Coffee research and impacts
- Arsenic contamination and mitigation
Rede de Química e Tecnologia
2006-2025
Cooperativa de Ensino Superior Politécnico e Universitário
2013-2025
Universidade do Porto
2003-2025
Unidade em Ciências Biomoleculares Aplicadas
2025
Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde
2018-2021
John Wiley & Sons (Germany)
2005
Arizona State University
2005
American Sports University
2005
Instituto Superior de Ciencias de Saude
2001
A comparative elemental analysis of espresso coffee from Poland and Portugal was carried out. Using an ICP-MS analytical procedure, samples collected public cafes in (n = 60 n 44, respectively) were studied for their macromineral trace element content. To evaluate the contribution water to final composition beverage, paired (i.e., same locations) drinking also analysed. The mineral profile quite similar: Mg > P Ca Rb Mn B Zn Cu Sr Ba Ni Pb Cs Mo Sn Cd Sb Tl Portugal. For most elements,...
Background/Objectives: Higher lithium (Li) levels in drinking water have been linked to lower suicide rates the general population several ecological studies, though this relationship is not always consistent. The main limitation of such studies assumption that Li content directly correlated with total intake, which may be case for reasons. Methods: In context, we conducted a biomonitoring study compare urinary levels-assumed as reliable indicator intake-among individuals from three regions...
Abstract The Leça River and two beaches close to the north south margins of estuary, nowadays an important seaport harbor, show signs contamination. However, chemical nature that contamination is uncertain. Therefore, this study checked for presence 11 endocrine disrupting compounds (EDCs) animal (17β-estradiol estrone), pharmaceutical (17α-ethynylestradiol), industrial (alkylphenols, alkylphenol ethoxylates, bisphenol A) origins in water samples collected from six points at river gradient...
This paper describes the development and application of a flow injection analysis system manifold comprising gas diffusion unit potentiometric detector to determination free total SO2 in white red wines. A homogeneous crystalline iodide double-membrane tubular electrode was used as detector. based on Ripper method carried out by dosing formed oxidation with iodine, followed separation compound through Teflon membrane. The results obtained from analyses 30 wine samples showed good agreement...
Water quality of Douro and Ave lower basin was evaluated regarding physicochemical parameters (pH, conductivity, dissolved oxygen temperature), nutrient compounds (nitrates, nitrites, ammonium orthophosphates), chlorophyll a occurrence trace elements (Li, Be, Al, Ti, V, Cr, Co, Ni, Cu, Zn, Se, Mo, Ag, Cd, Sb, Ba, Tl, Pb, Th U). To study spatiotemporal variations possible anthropogenic sources, estuarine samples were collected at nine sampling sites in five distributed along the estuaries...
Natural organic compounds such as phytoestrogens and phytosterols found in various plants, well mycotoxins produced by fungi, can be aquatic environments. The aim of this study was to investigate the occurrence three different classes natural estrogenic compounds, i.e., phytoestrogens, mycotoxins, estuarine water samples from Ave River estuary. For that, were collected at five sampling points distributed along estuary low tide, during 1 year, processed solid-phase extraction (SPE) analyzed...
Because of the scientific evidence showing that arsenic (As), cadmium (Cd), and nickel (Ni) are human genotoxic carcinogens, European Union (EU) recently set target values for metal concentration in ambient air (As: 6 ng/m3, Cd: 5 Ni: 20 ng/m3). The aim our study was to determine levels these trace elements Porto Metropolitan Area (PMA) order assess whether compliance occurring with new EU quality standards. Fine (PM2.5) inhalable (PM10) particles were collected from October 2011 July 2012...
Amphetamine (AMP) is a chiral psychoactive substance that exhibits enantioselectivity in its pharmacological properties. It has been detected wastewaters and surface waters can occur as enantiomeric mixtures, but little known about environmental risk potential enantioselective toxicity to aquatic organisms. Our study aimed target AMP the freshwater invertebrate Daphnia magna. Daphnids were subchronically exposed racemate (rac-AMP: 0.1, 1.0, 10 µg/L) pure enantiomers, (R)-AMP (S)-AMP (0.1,...
<p>The Douro River lower basin water quality was studied regarding its concentration on 18 trace elements (Be, Al, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Mo, Ag, Cd, Sb, Ba, Tl, Pb and U, measured by ICP-MS). Other physicochemical parameters, such as pH, conductivity, dissolved oxygen temperature were also determined in situ.</p> <p>To take into account the expected spatio-temporal changes to look for anthropogenic influences element levels, samples (n=88) collected at 11 sampling...
Abstract The preparation of a biosensor based on the enzymatic immobilization in polypyrrole polymer for detection antidepressant drugs is described. enzyme monoamine oxidase (MAO) was immobilized by electropolymerization pyrrole around platinum electrode, at constant potential +0.75 V (vs. Ag/AgCl) such way to obtain membrane thickness, which and equal 100 mC/cm 2 . obtained from 0.1 M KCl saline solution containing concentration 0.4 2.5 mU/mL MAO. adapted continuous flow injection analysis...