Fernando Fabriz Sodré

University of Brasília | UnB · Institute of Chemistry

The determination of toxic substances in insect larvae collected from corpses in an advanced state of putrefaction can help to elucidate the causa mortis in forensic cases. In this study, an analytical method for the simultaneous determination of six prescription drugs, cocaine and its metabolite benzoylecgonine, and aldicarb and its sulfone and su...

The goal of this work was to investigate the occurrence of emerging contaminants in drinking water of the city of Campinas, Brazil. Tap water samples were analyzed using SPE-GC-MS for 11 contaminants of recent environmental concern. Six emerging contaminants (stigmasterol, cholesterol, bisphenol A, caffeine, estrone, and 17β-estradiol) were found i...

This is the first report on the occurrence of cocaine (COC) and benzoylecgonine (BE) residues in six samples collected from different wastewater treatment plants (WTP) located in the Brazilian Federal District (FD). Concentrations of BE in the influent sewage were used to calculate cocaine consumption (kg year(-1) per 1000 inhabitants) for each reg...

Bisphenol A (BPA) is a plasticizer used to synthesize polycarbonate plastics and epoxy resins and is well-known for its endocrine-disrupting action. BPA occurrence in the environment is widespread, and there is a growing concern regarding exposure to this chemical during childhood, given the findings indicating the long-lasting hazards associated w...

This study employed the wastewater‐based epidemiology (WBE) strategy to investigate cocaine (COC) and ecstasy (MDMA) usage during Carnatal festival in Rio Grande do Norte, Brazil. Wastewater samples were collected over the four festival days (December 12–15, 2019), as well as during corresponding days before and after the event. The samples underwe...

One of the challenges in removing contaminants of emerging concern is the reduced efficiency due to their low concentrations in the natural environment. To overcome this, a pre-concentration step can be applied, followed by the degradation of the contaminant. In this sense, adsorption on activated carbon (AC) can be used in the first step, while an...

Brazil maintains its position at the top of the global ranking of plastic producers, yet recycling efforts have been incipient. Recent data reveals an annual production of approximately 14 million tons of plastic waste, not accounting for the surge in the usage of plastic masks and related materials due to the COVID-19 pandemic. However, what remai...

The global rise in plastic demand and production, combined with the significant amount of plastics found in municipal solid waste, has led to the ubiquitous occurrence of microplastics (MPs) in the aquatic environment. This review examines the existing information on the origin, behaviour, fate, and effects of MPs on living organisms and the enviro...

The proliferation of new psychoactive substances (NPS) over recent years has made their surveillance complex. The analysis of raw municipal influent wastewater can allow a broader insight into community consumption patterns of NPS. This study examines data from an international wastewater surveillance program that collected and analysed influent wa...

The chemical pollution crisis severely threatens human and environmental health globally. To tackle this challenge the establishment of an overarching international science–policy body has recently been suggested. We strongly support this initiative based on the awareness that humanity has already likely left the safe operating space within planeta...

Since 2020, developed countries have rapidly shared both publicly and academically relevant wastewater surveillance information. Data on SARS-CoV-2 circulation is pivotal for guiding public health policies and improving the COVID-19 pandemic response. Conversely, low- and middle-income countries, such as Latin America and the Caribbean, showed timi...

Cocaine and cannabis consumption during and after the 2019 Carnival holiday were assessed using the wastewater-based epidemiology (WBE) in the capital of Brazil, Brasília. The substances 11-nor-9-carboxy-Δ9-tetrahydrocannabinol (THC-COOH), cocaine (COC), benzoylecgonine (BE), and cocaethylene (COE) were monitored in composite samples (24 h) collect...

Silicate rock powder (SRP) restores the fertility of weathered soils. However, its slow nutrient release is a disadvantage for short-duration crops. Humic-like acids (HLAs) are plant biostimulants that enhance root development and nutrient uptake. This work evaluates the effects of the co-application of HLA extracted from a vermicompost and SRP on...

We characterized the PM10 sampled in Distrito Federal (DF), Central Brazil, an area close to agricultural processes, the Amazon Forest and impacted by biomass burning. We quantified the water-soluble ions (Na⁺, K⁺, Mg²⁺, Ca²⁺, Cl⁻, NO3⁻, SO4²⁻), elements (Al, Ba, Cu, P, Zn), total carbon, ¹³C isotope and identified its morphology from January 2018...

Scarless skin regeneration is a challenge in regenerative medicine. Herein, we explore the regenerative potential of a Cupuaçu seed extract (Theobroma grandiflorum) to develop an innovative skin regeneration formulation based on chitosan-coated nanocapsules. Cupuaçu seed extract significantly stimulated cell proliferation and migration. A reparativ...

In the Brazilian Savanna, most of the soils have a low natural fertility. In order to overcome this limitation, farmers use large amounts of soluble fertilizers, causing environmental impacts. In the present study, finely ground biotite syenite (0; 600; 1,200; 1,800; and 2,400 kg ha-1) was evaluated as an alternative source of nutrients and electri...

A simple high area TiO2/SiO2 nanocomposite was synthesized, characterized, and used to support P25 TiO2 on glass surfaces leading to an ease and cheap way to promote adhesion without refined pre-treatment steps. Photocatalytic performance and stability of the immobilized TiO2 was evaluated in laboratorial and pilot scales, under artificial and sola...

The occurrence of polycyclic aromatic hydrocarbon (PAHs) in sediments of River Benue, one of the major rivers in West Africa and the second largest in Nigeria, was investigated in this work. Their sources, ecological and human health risks were also assessed. Sediment samples, collected from six locations along the river, in Makurdi metropolis, wer...

Gadolinium-based contrast agents are worldly used for medical magnetic resonance imaging and are an emerging contaminant in natural waters. We investigated the dissolved fraction of Gd in coastal waters from Fortaleza city and observe positive Gd anomalies in the wastewater outfall area as well as in two local river estuaries indicating that the ci...

A multilayered iron oxide/reduced graphene oxide (ION-RGO) nanocomposite electrode is reported for the voltammetric sensing of bisphenol-A (BPA). Structural characterizations reveal the nanocomposite features RGO sheets decorated with nanometric spherical ION in a mixture of maghemite and magnetite phases. ITO substrate modified with the ION-RGO mu...

The ability to monitor the spread of diseases is essential for prevention, intervention and control practices. In this context, wastewater-based epidemiology (WBE) has been applied to empirically evaluate the exposure of populations to chemical substances and pathogens of emerging concern in near real time. During the current COVID-19 pandemic, WBE...

The Brazilian Federal District is located under a savannah climate characterized by an intense dry season, resulting in severe problems related to water availability. This situation motivates the search for alternate water sources, leading to the indirect water reuse in the Paranoá Lake, an artificial reservoir located in the heart of the Brazilian...

Human exposure to endocrine disrupting chemicals (EDCs) is broadly investigated due to possible adverse effects to human health. Bisphenol A (BPA) is a chemical of great concern due to its wide use in industrial products including canned food. Exposure during childhood is of special concern because the developing endocrine system is particularly se...

Beneficial bacteria belong to a group of microorganisms that are able to enhance plant growth by several mechanisms. In this study, phosphorus and zinc solubilizing, nitrogen-fixing and indole acetic acid (IAA) producing bacteria associated with C. brasiliensis were screened to develop microbial inoculants (MI) for use in agriculture. Characterizat...

Polybrominated diphenyl ethers (PBDEs) are used as flame retardants in several products, although they can act as neurotoxic, hepatotoxic and endocrine disruptors in organisms. In Brazil, their levels in aquatic sediments are poorly known; thus, concerns about the degree of exposure of the Brazilian population to PBDEs have grown. This study aimed...

This work provides a new analytical method for the determination of cocaine, its metabolites benzoylecgonine and cocaethylene, the pyrolytic products anhydroecgonine and anhydroecgonine methyl ester and the pharmaceutical levamisole in wastewater. Samples were solid‐phase extracted and extracts analyzed by liquid chromatography‐tandem mass spectrom...

Purpose The external supply of humic substances has been recently suggested for the remediation of metal-polluted sediments; however, little is known about how to supply them and their effects on metal mobility. The study sought to investigate the sediment—metals—humic substance interaction in mangrove forest sediments. We aimed to evaluate the sed...

The levels of cocaine (COC) and its metabolites benzoylecgonine (BE) and cocaethylene (COE) in wastewater samples from Brasilia, Brazil, were determined using liquid chromatography coupled to hybrid quadrupole-time-of-flight mass spectrometry. The former metabolite was used to estimate cocaine consumption using a country-tuned correction factor tha...

Waste from the beneficiation of fish was composted with crushed grass aiming to characterize their chemical composition and investigate the possibility of the use of the final compost as source of humic acids (HA) able to stimulate the growth of lettuce. Compost presented pH value, C/N ratio, and electrical conductivity that allow its use as an org...

About 3.0 million people living under a typical tropical savannah climate in the Brazilian Federal District (FD) have faced an unprecedented water crisis. Considering the need for indirect reuse of wastewater for public supply, this work aimed to investigate FD water sources regarding the presence and risks of three contaminants of emerging concern...

Selected emerging contaminants in water samples from the Brazilian capital were investigated by liquid chromatography-mass spectrometry after solid-phase extraction. In Paranoá Lake, an urban reservoir that will be used to produce drinking water, caffeine was the most abundant contaminant found (average of 53 ng L⁻¹), followed by atenolol (34 ng L⁻...

This work received "The 8th Journal of Mass Spectrometry Award, Journal of Mass Spectrometry (Wiley)". It was a proposal to compare data from police seizure and WBE and try to identify different patterns of use of cocaine products based on their adulterants.

The aim of this work was to investigate the influence of the organic matter on copper and lead adsorption in soils with different physiochemical and mineralogical attributes. Suspensions (pH 6.0) of a Latosol, a Neosol and a Vertisol containing increasing amounts of copper or lead were used to obtain sorption isotherms while identical experiments w...

Flame retardants are substances mixed with numerous materials to inhibit the combustion process, reducing risks and damages caused by fires. Among these substances, polybrominated diphenyl ethers (PBDEs) have been widely used for decades due to their low cost and high efficiency. However, since they are mixed and not chemically bonded to the materi...

The present work intended to present a preliminary snapshot on the contamination of Brazilian surface waters by pharmaceuticals and personal care products. Data were collected elsewhere for Measured Environmental Concentrations (MEC) in surface waters and Predicted No-Effect Concentration (PNEC). Prioritization was based on risk assessment, where M...

In the current study, sorption isotherms, and kinetic and thermodynamic experiments were carried out to assess copper behavior in four soils from a toposequence located in the Brazilian Tropical Savanna (Cerrado). Adsorption data were investigated using non-linear regressions based on the models of Langmuir, Freundlich, Temkin, and Dubinin–Radushke...

The distribution of consumed cocaine in the Brazilian Federal District (FD) was estimated using the wastewater-based epidemiology (WBE) approach. Sewage samples from eight wastewater treatment plants were analyzed for cocaine (COC) and benzoylecgonine (BE) using solid-phase extraction followed by liquid chromatography-mass spectrometry. The highest...

Particulate matter (PM) is a minor component of the atmosphere generated from natural and anthropogenic sources, whose characteristics are reflected in its composition. The PM particle size is related to the residence time in the atmosphere and the level of penetration in the human respiratory system. The presence of certain elements and chemical s...

Emerging contaminants have been considered one of the main concerns for ensuring the quality of water around the world. This work presents the results of 10 years of analyses carried out in the state of São Paulo (Brazil) that has the high population density and intense agricultural and industrial activities. In this work 58 compounds (9 hormones,...

A multiresidue method was developed to estimate community drug use during two weekends of the 2014 Soccer World Cup via wastewater analyses. Five of the 16 investigated substances were detected in all eight samples. Benzoilecgonine (BE), the major cocaine metabolite, was the most abundant substance (1.9 ± 0.3 to 4.2 ± 0.2 μg L⁻¹) followed by anhydr...

An analytical method was developed and validated for the determination of nine PBDE congeners (BDE 28, 47, 66, 85, 99, 100, 138, 153 and 154) in aquatic sediment samples using ultrasonic solid-liquid extraction (acetone:n-pentane 1:1 v/v) followed by gas chromatography coupled with electron capture detection. Values for LOD varied between 0.58 and...

Magnetic nanosorbents are novel materials that have been impacting various applications in environmental fields, including the detection of pollutants and remediation of polluted environments. In this work, the thermal heating effect caused by the interaction of nanoparticles’ magnetic moments with an alternating magnetic field (AMF) – magnetic hyp...

The determination of toxic substances in insect larvae collected from corpses in an advanced state of putrefaction can help to elucidate the causa mortis in forensic cases. In this study, an analytical method for the simultaneous determination of six prescription drugs, cocaine and its metabolite benzoylecgonine, and aldicarb and its sulfone and su...

Export Date: 16 January 2015, Article in Press

Copper behavior and bioavailability in a red Latosol treated with Cu-enriched sewage sludge were investigated. Results showed that sewage sludge increases nutrient and organic matter concentration in the soil. In sludge-amended treatments, bioavailability to lettuce plants was reduced due formation of organic complexes. In this case, plant producti...

DRUGS OF ABUSE IN WATERS AND WASTEWATERS: OCCURRENCE, ANALYTICAL DETERMINATION AND FORENSIC APPLICATIONS. Drugs of abuse are commonly used outside medical or legal settings where their production, marketing and consumption are subject to legal summons and/or intervention. Classified as emerging contaminants, these substances have been recently dete...

The goal of this work was to investigate the changes in copper behavior in Iguaçu River, a body of water strongly affected by urban inputs. This work was carried out in a subtropical Brazilian watershed suffering with high loads of raw sewage discharges from the Metropolitan Region of Curitiba. A comparison between sampling sites located upstream a...

A greenhouse experiment was conducted to evaluate phytotoxicity and distribution of Cu in a tropical soil amended with sewage sludge (Sw) and copper sulfate (CuSO4 center dot 5H(2)O). Samples of a clay soil from the State of Parana, Brazil were collected at depth of 0-20; 20-40 and 40-60 cm, and brought to the laboratory to be properly accommodated...

Uma grande quantidade de poluentes surge em sistemas aquáticos naturais por meio de fontes pontuais e difusas. As fontes pontuais são facilmente identificadas e diagnosticadas e, por este motivo, é possível estabelecer medidas de controle ou, em alguns casos, ações que visam punir os responsáveis pelo descarte de resíduos que não se enquadram à leg...

Interferentes endócrinos são compostos orgânicos hormonalmente ativos que podem causar distúrbios no sistema endócrino de seres humanos e animais, mesmo em baixas concentrações. Muitos compostos têm sido classificados como interferentes endócrinos, embora ainda não haja um consenso sobre seus efeitos sobre a biota em condições naturais. O interesse...

Muitos fenômenos químicos, físicos ou biológicos ocorrem nas interfaces formadas entre compartimentos ambientais, sendo que seus efeitos podem ser notados, tanto na própria interface, quanto em apenas um compartimento específico. Da mesma forma, o contrário também pode ocorrer, ou seja, uma reação confinada em um reservatório pode promover consequê...

Uma grande quantidade de poluentes surge em sistemas aquáticos naturais por meio de fontes pontuais e difusas. As fontes pontuais são facilmente identificadas e diagnosticadas e, por este motivo, é possível estabelecer medidas de controle ou, em alguns casos, ações que visam punir os responsáveis pelo descarte de resíduos que não se enquadram à leg...

Estrogenic Endocrine Disrupting Chemicals (EDCs) are a concern due to their ubiquity and recognized adverse effects to humans and wildlife. Methods to assess exposure to and associated risks of their presence in aquatic environment are still under development. The aim of this work is to assess estrogenicity of raw and treated waters with different...

A liquid chromatography-electrospray tandem mass spectrometry (LC-MS/MS) method for the determination of antibiotics in water was developed and applied to Brazilian surface waters. Amoxicillin, ampicillin, cefalexin (CEF), ciprofloxacin (CIP), norfloxacin (NOR), sulfamethoxazole, tetracycline (TET), and trimethoprim were selected as target compound...

A sensitive and specific method was developed and validated for the determination of estrogen and xenoestrogen in surface waters using liquid chromatography followed by tandem mass spectrometry. Chromatographic separation was performed using ammonium hydroxide solutions in water and in methanol as mobile phase. Compounds were determined in a triple...

A solid-phase in-line extraction system for water samples containing low levels of emerging contaminants is described. The system was specially developed for large volume samples (up to 4 L) using commercial solid-phase extraction (SPE) cartridges. Four sets containing PTFE-made connectors, brass adapters and ball valves were used to fit SPE cartri...

A solid-phase in-line extraction system for water samples containing low levels of emerging contaminants is described. The system was specially developed for large volume samples (up to 4 L) using commercial solid-phase extraction (SPE) cartridges. Four sets containing PTFE-made connectors, brass adapters and ball valves were used to fit SPE cartri...

Analytical laboratories are expected to produce reliable results. Decision makers are guided in their actions (financial, legal and environmental) using analytical data provided by numerous laboratories. This work aimed to evaluate the analytical performance of Brazilian laboratories on producing trustworthy results. Nineteen laboratories, accredit...