MARYCEL ELENA BARBOZA COTRIM

MARYCEL ELENA BARBOZA COTRIM

(Fonte: Lattes)

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Bachelor's at Química from Faculdades Osvaldo Cruz (1985), master's at Tecnologia Nuclear from Instituto de Pesquisas Energeticas E Nucleares (1991) and doctorate at Tecnologia Nuclear from Instituto de Pesquisas Energeticas E Nucleares (2006). Has experience in Chemistry, focusing on Separation, acting on the following subjects: avaliação ambiental, metais, química ambiental, qualidade da água and química analítica. (Text obtained from the Currículo Lattes on November 17th 2021)

Mestrado em Tecnologia Nuclear pelo Instituto de Pesquisas Energéticas E Nucleares (1991) e Doutorado em Tecnologia Nuclear pelo Instituto de Pesquisas Energéticas E Nucleares (2006). Atualmente é pesquisador da Comissão Nacional de Energia Nuclear. Experiência em química analítica, atuando principalmente nos seguintes temas: avaliação ambiental, metais, química ambiental, qualidade da água e química analítica, caracterização de compostos de urânio e química analítica instrumental. (Texto extraído do Currículo Lattes em 17 nov. 2021)

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Aspects of higly microplastic contamination in the Atlantic Forest estuary
2023 - PARRA, DUCLERC F.; GIMILIANI, GIOVANA; SANTOS, JACINETE L. dos; COTRIM, MARYCEL E.B.
The Atlantic Forest is one of the richest regions in terms of biodiversity in the world. Originally the biome covered about 15% of the national territory. Currently, only about 12.4% (SOS MATA ATLÂNTICA, 2021) of well-preserved forest remnants remain in the country [1]. Regarding mangrove areas, in the state of São Paulo there are about 223 km², according to the Atlas of mangroves in Brazil, with about 120.5 km² of this total in Baixada Santista. Analyzes of sediments collected at Santos estuarine mangroves, in various points show a high concentration of microplastics generated from industrial processes or even anthropogenic activity. These solid particles based on (< 5 mm) are today one of the main environmental problems. The microplastics present in the sediment samples were quantified after drying and sieving amount limited of sediment. FTIR and micro-Raman spectroscopy identified filaments and fragments of microplastics (MPs) as commom polymer spectra. Also additives and herbicides were present in some MPs. All polymeric types identified (<5mm) have wide applications and demands by packaging, civil construction, automotive, electrical and electronics, and textile sectors.
Fingerprint of precious metals ornaments to post-mortem inventory by energy dispersive X-Ray fluorescence spectrometry
2023 - TESSARI-ZAMPIERI. MARIA C.; COTRIM, MARYCEL E.B.; SCAPIN, MARCOS A.
Quantitative analysis of metal alloys in ornaments can reveal relevant aspects about the substrates used in the manufacturing process. Fifty-three female ornaments (chains, rings, and earrings) were identified as jewelry and semi-jewelry using EDRFX. Twenty-three samples were identified and evaluated as jewelry because they had a substrate composed of different concentrations of gold (40-83%) ranging from 10 to 21 carats. This study can be considered the first to use EDRFX to analyze jewelry and semi-jewelry for post-mortem inventory, and substrate composition was decisive for fingerprinting the valuation of each artifact.
A review on the radiological protection materiality in environmental sustainability reports
2023 - TESSARI-ZAMPIERI, M.C.; SANTIAGO, A.F.; LOPES, RENAN N.; COTRIM, MARYCEL E.B.; SCAPIN, MARCOS A.
Materiality should be used as a strategic business tool, with implications beyond social, economic, and environmental responsibility in sustainability reporting. Organizations can benefit by incorporate materiality into their existing economic processes, creating a broader approach and ensuring strategies with significant social and environmental topics. This provides stakeholder engagement; prioritizes financial resources for sustainability; develops new business; identifies climate change issues; among others. In this context, aim this study was to present a review the materiality related to radiologic protection in organizational sustainability reports. The results show that radiologic protection is considered in several topics in the organizational sustainability reports evaluated, represented from issues occupational health and safety, environmental assessment suppliers, environmental compliance, local communities, and waste management. It was concluded that, in preparing the materiality matrix, it is necessary to have the methods defined advance to grant them to be reproduced and periodically reviewed. This will allow to demonstrate the sustainability evolution and its alignment with the organizations' strategies.
Validação do método de medida de pH em amostras de efluente liquido do IPEN/CNEN-SP
2023 - BLAT, STELLA R.; COTRIM, MARYCEL E.B.
Carbon allocation of Spirodela polyrhiza under boron toxicity
2023 - PAGLIUSO, DEBORA; PEREIRA, JOAO P. de J.; ULRICH, JOAO C.; COTRIM, MARYCEL E.B.; BUCKERIDGE, MARCOS S.; GRANDIS, ADRIANA
Pectic polysaccharides containing apiose, xylose, and uronic acids are excellent candidates for boron fixation. Duckweeds are the fastest-growing angiosperms that can absorb diverse metals and contaminants from water and have high pectin content in their cell walls. Therefore, these plants can be considered excellent boron (B) accumulators. This work aimed to investigate the relationship between B assimilation capacity with apiose content in the cell wall of Spirodela polyrhiza subjected to different boric acid concentrations. Plants were grown for 7 and 10 days in ½ Schenck-Hildebrandt media supplemented with 0 to 56 mg B.L-1, the non-structural and structural carbohydrates, and related genes were evaluated. The results showed that B altered the morphology and carbohydrate composition of this species during plant development. The optimum B concentration (1.8 mg B.L-1) led to the highest relative growth and biomass accumulation, reduced starch, and high pectin and apiose contents, together with increased expression of UDP-apiose/UDP-xylose synthase (AXS) and 1,4-α-galacturonosyltransferase (GAUT). The toxic state (28 and 56 mg B.L-1) increased the hexose contents in the cell wall with a concomitant reduction of pectins, apiose, and growth. The pectin content of S. polyrhiza was strongly associated with its growth capacity and regulation of B content within the cells, which have AXS as an important regulator. These findings suggest that duckweeds are suitable for B remediation, and their biomass can be used for bioenergy production.
Contamination characteristics in runof fractions from a nuclear facility in São Paulo, Brazil
2023 - FAUSTINO, MAINARA G.; MONTEIRO, LUCILENA R.; LIMA, SAMIA R.M.; SILVA, TATIANE B. de S.C. da; PIRANI, DEBORA A.; PEDREIRA FILHO, WALTER dos R.; GONZAGA, ROBERTA G.; COTRIM, MARYCEL E.B.; PIRES, MARIA A.F.
The stormwater runoff may act as a nonpoint pollutant source and contributes to aquatic ecosystem quality decay in urban environments. The aim of this work was to evaluate the runoff characteristics on the transport of total solids and total metals, as well as pH and conductivity responses during the rainfall evolution. During 2017 and 2018, 12 rain events were monitored in 4 sampling stations at a car parking lot located at Nuclear and Energy Research Institute (IPEN/CNEN) in São Paulo/Brazil. A 4-chamber integrated collector allowed the sequential/temporal runoff evolution assessment. The runoff composition, in decreasing order of quantities, was Ca > K > Mg > Si > Al > Fe > Na > Zn > Mn > Sr > Ti > Mo > V > Cu > B > Pb > Ni > Ce > Sb > Cr > La > U > Th > Cd. The amount of total solids, Al, and Fe exceeded the Brazilian water quality standards. Principal component analysis (PCA) identified the elemental clusters linked to the facility activity, soil, and traffic/atmospheric-related deposition. The results show that the runoff characteristics could be differentiated by pollutant source. Factors such as seasonal variation, rain event intensity, air mass from oceanic or continental origin, spatial distribution inside the monitoring area, and the intensity of the first flush must be considered in order to disentangle the elemental clusters and pollution source contributions. In winter, continental air masses were associated with higher concentrations of heavy metals in the surface runoff. Spatial changes with no seasonal variation were observed for U, Th, La, and Ce.
Exploring the acid neutralizing effect in rainwater collected at a tropical urban area
2023 - ESQUIVEL-HERNANDEZ, GERMAIN; SANCHEZ-MURILLO, RICARDO; VILLALOBOS-CORDOBA, DIEGO; MONTEIRO, LUCILENA R.; VILLALOBOS-FORBES, MARIO; SANCHEZ-GUTIERREZ, ROLANDO; COTRIM, MARYCEL E.B.; MATIATOS, IOANNIS
We report on the chemical and the carbon isotopic composition of dissolved inorganic carbon (DIC) of rainwater collected between May and October 2020 in the Central Valley, Costa Rica. Precipitation samples were collected daily (N = 55) and analyzed for major ions, DIC, and δ13CDIC. Significant correlation (p < 0.05) between main acidic (SO4 2− and NO3 − ) and major alkaline (Ca2+ and NH4 +) species confirmed a very effective acid neutralization effect in rainwater (average pH: 5.90 ± 0.74). Significant temporal variations (p < 0.05) of δ13CDIC indicated the contribution of carbonate salts in rainwater from May to October but also CO2 dissolution at the beginning of the wet season (May), probably due to increased CO2 emissions from soil degassing. Temporal changes of Ca2+ neutralization factors followed the observed changes in δ13CDIC, which confirmed the high buffer capacity of precipitation in our study. HYSPLIT analysis also revealed long-range contributions of pedogenetic carbonates (e. g., Saharan dust) responsible for the acid neutralization capacity of rainwater (e.g., from July to September). Principal component analysis showed that four main factors explain 65% of the variance are: i) acid neutralization processes (Ca2+ neutralization factor), ii) marine salts (Cl− , Na+), iii) fossil fuels (SO4 2− , NO3 − ), and iv) agriculture/fertilizers (NO3 − , NH4 +, K+). Our study demonstrated that a combined approach of chemical, isotope, and statistical analysis techniques can help unravel the mechanism of acid neutralization of rainwater in tropical urban areas. This information has strong implications for future studies related with the impact of acid deposition on ecosystem functioning, water quality, and infrastructure degradation.
X-ray fluorescence spectrometry
2023 - SCAPIN, M.A.; TESSARI-ZAMPIERIA, M.C.; GUILHENA, S.N.; COTRIM, M.E.B.
This study aims to develop reliable analytical methodology that is, cost-effective, and requires minimal sample quantity to quantify uranium content in nuclear waste and others. The Energy Dispersive X-ray Fluorescence Spectrometry (EDXRF) technique was used, and a rigorous comparison was made between the fundamental parameters (FP) method and the empirical (EMP) method. Statistical evaluation of results demonstrated that the FP method showed a satisfactory level of confidence for precision and limit of quantification.
Sugarcane beyond the sweetness
2022 - LEBRE, DANIEL T.; THIPE, VELAPHI C.; COTRIM, MARYCEL E.B.; BUSTILLOS, JOSE O.V.
Introduction: Sugarcane is a well known source or raw material to produce sugar, alcohol and bioethanol. Brazil is the world’s largest producer of sugarcane (Saccharum sp.), followed by India, China, and Bangladesh, all of which generate significant amounts of bagasse as a by-product of their sugar and bioethanol mills in each of these countries.1 The sugarcane bagasse (SCB) is a fibrous material remaining after the plant's stalk pressing process used to extract the sweet juice used for the industrial production of sugar and alcohol. SCB is one of the most economically viable and readily accessible agro-industrial residues in the world, particularly in tropical regions.2 Recently SCB has taken attention in scientific community, manly in chemistry, because exhibits strong biosorption capabilities, which are defined as the passive sorption of organic and inorganic substances in soluble or insoluble forms from an aqueous solution utilizing decomposing biological materials. Sarker at al. published a comprehensive study of the SCB biosorption properties and their application.3 The purpose of this work is to demonstrate the continued applicability of SCB as SPE biosorbent bed for extracting synthetic hormones (ethynylestradiol, drospirenone and levonogestrel) from pharmaceutical industrial effluent prior LC-MS/MS quantitative analysis. Methods: SPE: SCB 75 μm bed at a concentration of 50 mg was used to pack empty 1 cc (mL) SPE cartridges containing retained frits. To compare the outcomes of the recoveries, the following commercial (cSPE) were used: Oasis HLB 30 mg, 1 mL; Discovery DSC-18 50 mg, 1mL and Sulpeclean Envi-Carb, 100 mg, 1 mL. Conditioning: 1 mL of methanol and 1 mL of water; Load: 1 mL of sample; Wash: 2x 0.75 mL of water; Dry cartridge: under synthetic air flow; Elution: 2x 0.3 mL MeOH. Prior to LC-APCI-MS/MS analysis, the MeOH extracted sample residue was dried in 10 mL class assay tube under N2 gas flow at 40 ºC using and dissolved in 1 mL of 50% acetonitrile/50% water (v/v) solution. Results: The sorption effectiveness of the SCB bed was evaluated using the following experimental parameters in comparison to existing and commercially available SPE (cSPE) cartridges: (i) SCB re-use (recycling); (ii) load concentration variation; (iii) breakthrough (mass/volume capacity); (iv) pH variation; (v) extraction solvents variation (vi) particle size; and (vii) suitability for use in industrial effluent. The SCB SPE results (accuracy data ranged from 99% to 120%) were significantly acceptable for all the synthetic hormones compounds tested and analyzed in industrial effluent samples and comparable to Oasis HLB (benzene copolymer) SPE material and the others. Conclusion: Our overarching objective for developing SCB as SPE sorbent material for the analysis of synthetic hormones from industrial effluents has expanded the research area and/or application of SCB, which the biomass is often burnt to generate energy in the sugar and alcohol mills.
The Brumadinho mining disaster
2022 - BORDON, ISABELLA C.; LIMA, MARIANA; ABESSA, DENIS M.S.; FAVARO, DEBORAH I.T.; SILVA, PAULO S.C. da; COTRIM, MARYCEL E.B.; ULRICH, JOAO C.; TAKAHASHI, CAMILA K.; SILVA, JOSE R.M.C. da
The rupture of the Córrego do Feijão Dam close to Brumadinho municipality is one of the recent and most devastating environmental disaster in Brazil. This study aims to report the results of metal determinations and acute toxicity assays of mining tailing samples collected 5 days after the dam rupture. Concentrations of As, Cu and Ni in site 1 (close to the dam); concentrations of Cu, Zn and Pb in site 2 (Solo Sagrado) and As, Cd and Cr in the three replicates of site 3 (Mario Campos municipality) were higher than TEL reference value. The Cd concentration in of site 1, and As, Cd and Ni concentrations in of site 2 were higher than the PEL reference value, indicating effective effects of these metals to biota. Corroborating with previous studies, the Uranium contamination was detected close to Solo Sagrado. However, the evaluation of radionuclides came to the absence of relevant radioactivity. Regarding the ecotoxicological assays, survivor percentages of Daphnia similis were lower than the lab control in sites 2 and 3. Thus, results support concerns regarding environmental recovery, which can take years to occur. Monitoring of biota, abiotic and physical-chemical parameters should be performed continually.