Risk of exposure to Hg and pesticides residues in a traditional fishing community in the Amazon: a probabilistic approach based on dietary pattern Lucas Silva Azevedo, Inácio Abreu Pestana, Luiza Nascimento, Ronaldo Cavalcante Oliveira, Wanderley Rodrigues Bastos, et al. Environmental Science and Pollution Research, 2022 Exposure to mercury (Hg) and pesticides (o.p’DDT, p.p’DDT, o.p’DDE, and p.p’DDE) in the Amazon through eating fish is of concern due to the large participation of this food in the diet of traditional fishing communities. The aim of this study was to evaluate the estimated daily intake (EDI) and the incremental lifetime cancer risk associated with Hg and o.p’DDT, p.p’DDT, o.p’DDE, and p.p’DDE in an Amazonian community. The results showed that for Hg, the EDI from carnivorous and detritivorous fish had the highest values, while for pesticides, the EDI from detritivorous fish intake had the highest value. The incremental lifetime cancer risk was below the permitted limit. A recommendation for controlling the high risk of exposure includes the reduction of detritivorous fish ingestion and/or replacement with herbivorous fish, which had lower EDI. We highlight the importance of investigating the human dietary patterns when estimating risk of exposure to Hg and pesticides.
Arsenic Pathways in the Environment: The Role of Contaminated Groundwater in the Dispersion of Arsenic to Soil, Vegetables and Chicken Meat Bruno de Souza Ramos, Inácio Abreu Pestana, Annaliza Carvalho Meneguelli-Souza, Lucas Silva Azevedo, Marcelo Gomes Almeida, et al. International Journal of Environmental Research, 2021 This study evaluated the dispersion of arsenic (As) in the environment due to the use of contaminated groundwater for the irrigation of vegetables and chicken watering in two small farms located in a rural and urban zone in southeastern Brazil. ICP-AES was used to perform As determinations in groundwater, soil and vegetables samples while ICP-OES was used for chicken meat and offal. The As concentrations in the groundwater of the urban and rural farms were above the limit allowed (0.01 mg L−1) by Brazilian regulations (0.040 ± 0.019 and 0.017 ± 0.007 mg L−1, respectively), while the concentrations found in the soil for the same locations were below the limit allowed (15 mg kg−1) (1.071 ± 0.538 and 1.366 ± 0.141 mg kg−1, respectively). Vegetable samples were within the legal limits (0.3, 0.2 and 0.1 mg kg−1 for roots, leaves and fruits, respectively), with the exception of beet fruit (0.114 ± 0.031 mg kg−1) in the urban farm and cassava leaf (0.339 ± 0.374 mg kg−1) in the rural farm. As a general trend, roots accumulated more As compared to fruits and leaves, in that order. With the exception of chicken meat, liver and lung, all other offal analyzed (roe, gizzard, heart and skin) had As concentrations above 1.0 mg kg−1, the maximum allowed limit. The As concentration’ ratio between the evaluated environmental compartments indicated that (1) irrigation acts as a point source of As for the farms; (2) the soil acts as an As accumulator compartment and (3) the plant roots act as a barrier to prevent As translocation to its aerial part. Since the highest As concentrations were found in the least consumed chicken offal, we can conclude that this does not pose a risk to the community in the surrounding study area, but they were warned about our data and its implications to their health. As in groundwater showed a positive association with accumulated monthly rainfall. As levels in groundwater from both farms were above the legal limit. Soil was the environmental compartment that most accumulated arsenic. In vegetables, roots accumulated more As compared to fruits and leaves. Four out of seven chicken tissues analyzed had As levels above the legal limit. As in groundwater showed a positive association with accumulated monthly rainfall. As levels in groundwater from both farms were above the legal limit. Soil was the environmental compartment that most accumulated arsenic. In vegetables, roots accumulated more As compared to fruits and leaves. Four out of seven chicken tissues analyzed had As levels above the legal limit.
Arsenic in the lower drainage basin of the Paraíba do Sul River (Southeast Brazil): dynamics between the water column and sediment Annaliza Carvalho Meneguelli-Souza, Inácio Abreu Pestana, Lucas Silva Azevedo, Marcelo Gomes de Almeida, Cristina Maria Magalhães de Souza Environmental Monitoring and Assessment, 2021 The presence of arsenic (As) in the sediment and the particulate and dissolved fractions of the water column determines its behavior and bioavailability. The main geochemical parameters responsible for As mobility are organic matter and oxide-forming metals such as Fe. The As distribution and its concentration were evaluated in the dissolved fraction, suspended particulate matter (SPM) and sediment of the lower Paraíba do Sul River (PSR), its main tributaries (Muriaé, Pomba, and Dois Rios rivers), and flooded and estuarine areas. As was not detected in the dissolved fraction. The river flow influenced the As concentration in the SPM, which was higher in the dry season than in the rainy season (2.6 ± 0.69 and 1.98 ± 0.29 mg kg−1, respectively). The Fe oxyhydroxides, organic carbon, and surface area measured in the sediment were positively related with As concentration (R2 = 0.11, 0.34, and 0.30; p < 0.05). The highest As concentrations in the sediment occurred in the secondary estuary and flooded areas (5.16 ± 4.78 and 1.23 ± 0.44 mg kg−1, respectively), in which finer granulometric fractions (silt and clay) predominated (64% and 71%, respectively), in addition to greater surface area. The measurement of stable carbon and nitrogen isotopes (δ13C and δ15N) and atomic ratio (C:N)a indicated the existence of a combination of autochthonous and allochthonous sources of organic matter composing the SPM. In general, the As concentrations in the sediment and SPM were low, with values below that permitted by Brazilian regulations (5.9 mg kg−1), which suggests that the As sources in the lower basin of the PSR are diffuse and natural.
Mercury biomagnification in an ichthyic food chain of an amazon floodplain lake (Puruzinho Lake): Influence of seasonality and food chain modeling Lucas Silva Azevedo, Inácio Abreu Pestana, Marcelo Gomes Almeida, Adriely Ferreira da Costa Nery, Wanderley Rodrigues Bastos, et al. Ecotoxicology and Environmental Safety, 2021 Mercury (Hg) biomagnification in fish food chains is a relevant subject due to the high fish consumption of the Amazonian population and the high toxicity of this metal. In the Amazon, floodplain lake hydrodynamics change considerably along the four seasons of the hydrological cycle (rising water, high water, falling water and low water), which can influence Hg bioaccumulation in fish. The main aim of this study was to evaluate if Hg biomagnification is influenced by seasonality in a floodplain lake (Puruzinho Lake) in the Brazilian Amazon. Additionally, the influence of food chain modeling on measurement of Hg biomagnification was tested. Hg concentrations and stable isotope signatures (carbon and nitrogen) were estimated in four species, Mylossoma duriventre (herbivorous), Prochilodus nigricans (detritivorous), Cichla pleiozona (piscivorous) and Serrasalmus rhombeus (piscivorous). The "trophic magnification slope" (TMS) of the food chain composed by the four species was calculated and compared among the four seasons. There was no significant seasonal variation in TMS among rising water, high water, falling water and low water seasons (p = 0.08), suggesting that Hg biomagnification does not change seasonally. However, there was significant variation in TMS among different food chain models. Lower TMS was observed in a food chain composed of detritivorous and piscivorous fish (0.20) in comparison with a food chain composed of the four species (0.26). The results indicate food chain modeling influences TMS results.
Arsenic in groundwater in Paraíba do Sul river, Brazil: sources, hydrogeochemistry, and correlation with redox parameters Annaliza Carvalho Meneguelli-Souza, Inácio Abreu Pestana, Lucas Silva Azevedo, Marcelo Gomes de Almeida, Maria da Glória Alves, et al. Environmental Earth Sciences, 2020 This study assessed the presence of As in wells located near the lower Paraíba do Sul river, southeastern Brazil. Water samples were collected from 19 home wells and wells managed by the utility company in the region in June 2016 and February, May, and August 2017. The metalloid was detected in seven wells (37%). The most abundant ions in the wells were Cl − , Na + , SO 4 2− and Ca 2+ and the ions with the lowest concentrations were F − and Br − . The pH values were approximately 7.0 and redox potential and dissolved O 2 values were typical of reducing environments. Levels of As varied between 0.13 μg L −1 and 38.8 μg L −1 , which are above the maximum allowable concentration for human consumption according to Brazilian and international regulations (10 μg L −1 ). The presence of As in wells correlated positively with levels of sulfate and dissolved organic carbon, and correlated negatively with well depth. The results support that the oxidation of sulfide minerals is the process that favors mobilization of As to the groundwater, due to inputs from erosion and rainwater seepage through the soil. No significant seasonal changes were observed in As levels, with the lowest and highest value observed in August (2.61 µg L −1 ) and June (10.24 µg L −1 ), respectively. Principal component analysis revealed positive correlation between As levels and nitrite, and the negative correlation between As levels and redox potential and dissolved oxygen. This suggests that arsenite, which is the most soluble and toxic reduced form As, is the predominant chemical species in wells.
Quality of fauna studies in environmental impact assessments in Brazil's Atlantic rainforest: Trends across time periods and project types LS Azevedo, IA Pestana Biological Conservation 311, 111430 , 2025 2025
Phytochemical Composition and In Vitro Antibacterial Activity of the Essential Oil from Lippia grata Schauer (Verbenaceae) against Staphylococcus spp. from … AT da Silva, DS Rosa, GN do E, LS Azevedo, AVV de Souza, ... ACS omega 10 (40), 47292-47299 , 2025 2025 Citations: 1
Antinociceptive and anti-inflammatory potential, and chemical characterization of the dichloromethane fraction of Solanum lycocarpum (Solanaceae) ripe fruits by LC-DAD-MS MG Morais, AA Saldanha, IC Mendes, JPC Rodrigues, LS Azevedo, ... Journal of Ethnopharmacology 322, 117640 , 2024 2024 Citations: 10
Flood pulse as a driving force of Pb variation in four fish guilds from Puruzinho Lake (western Amazon) SM de Azevedo, LS do Nascimento, L de Oliveira Silva, MG de Almeida, ... Environmental Science and Pollution Research 30 (13), 38728-38737 , 2023 2023 Citations: 4
Spatial-temporal dynamics of Cr in fish from Puruzinho Lake (Western Amazon) and dietary risk assessment LS do Nascimento, L de Oliveira Silva, SM de Azevedo, R de Almeida, ... Chemosphere 300, 134576 , 2022 2022 Citations: 12
Risk of exposure to Hg and pesticides residues in a traditional fishing community in the Amazon: a probabilistic approach based on dietary pattern LS Azevedo, IA Pestana, L Nascimento, RC Oliveira, WR Bastos, ... Environmental Science and Pollution Research 29 (23), 34164-34173 , 2022 2022 Citations: 9
Do fish isotopic niches change in an Amazon floodplain lake over the hydrological regime? LS Azevedo, IA Pestana, MG Almeida, WR Bastos, CMM Souza Ecology of Freshwater Fish 31 (1), 72-80 , 2022 2022 Citations: 29
Arsenic pathways in the environment: the role of contaminated groundwater in the dispersion of arsenic to soil, vegetables and chicken meat BS Ramos, IA Pestana, AC Meneguelli-Souza, LS Azevedo, MG Almeida, ... International Journal of Environmental Research 15 (6), 921-934 , 2021 2021 Citations: 3
Methodology for maritime risk assessment in ports due to meteo‐oceanographic factors: the case of the port of suape, brazil L Azevêdo, H Duarte, D Galvão, P Michima, D Veleda, A Kreuger Risk analysis 41 (10), 1823-1839 , 2021 2021 Citations: 21
Arsenic in the lower drainage basin of the Paraíba do Sul River (Southeast Brazil): dynamics between the water column and sediment AC Meneguelli-Souza, IA Pestana, LS Azevedo, MG de Almeida, ... Environmental Monitoring and Assessment 193 (2), 57 , 2021 2021 Citations: 18
Mercury biomagnification in an ichthyic food chain of an amazon floodplain lake (Puruzinho Lake): Influence of seasonality and food chain modeling LS Azevedo, IA Pestana, MG Almeida, AF da Costa Nery, WR Bastos, ... Ecotoxicology and Environmental Safety 207, 111249 , 2021 2021 Citations: 42
Recent patents on the industrial application of alpha-amylases AVF Ferreira, FF Silva, AAM Silva, LS Azevedo, STD da Fonseca, ... Recent Patents on Biotechnology 14 (4), 251-268 , 2020 2020 Citations: 8
Arsenic in groundwater in Paraíba do Sul river, Brazil: sources, hydrogeochemistry, and correlation with redox parameters AC Meneguelli-Souza, IA Pestana, LS Azevedo, MG de Almeida, ... Environmental Earth Sciences 79 (9), 194 , 2020 2020 Citations: 5
Mercury concentration in six fish guilds from a floodplain lake in western Amazonia: interaction between seasonality and feeding habits LS Azevedo, IA Pestana, AF da Costa Nery, WR Bastos, CMM Souza Ecological Indicators 111, 106056 , 2020 2020 Citations: 34
Dinâmica de As, Cd e Cr em Cichla pleiozona no lago Puruzinho, Amazônia Ocidental: Influência da sazonalidade e avaliação de risco à saúde LS do Nascimento, LS Azevedo, WR Bastos, IA Pestana, CMM de Souza Congresso Fluminense de Pós-Graduação-CONPG , 2020 2020
RELAÇÃO ENTRE MERCÚRIO E SELÊNIO EM PEIXES DO LAGO PURUZINHO, BACIA DO RIO MADEIRA (AM): Efeitos da sazonalidade e hábitos alimentares L de Oliveira Silva, LS Azevedo, IA Pestana, WR Bastos, CMM de Souza Congresso Fluminense de Pós-Graduação-CONPG , 2020 2020
Variation in Hg accumulation between demersal and pelagic fish from Puruzinho Lake, Brazilian Amazon LS Azevedo, IA Pestana, AF da Costa Nery, WR Bastos, CMM Souza Ecotoxicology 28 (10), 1143-1149 , 2019 2019 Citations: 17
Exposure to toxic and essential trace elements through the intake of processed and meat cuts (beef and chicken) in southeastern Brazil B de Souza Ramos, IA Pestana, D Caldas, LS Azevedo, MG Almeida, ... Environmental monitoring and assessment 191 (8), 477 , 2019 2019 Citations: 11
Influence of the flood pulse on mercury accumulation in detritivorous, herbivorous and omnivorous fish in Brazilian Amazonia LS Azevedo, IA Pestana, AFC Nery, WR Bastos, CMM Souza Ecotoxicology 28 (4), 478-485 , 2019 2019 Citations: 22
The impact of hydroelectric dams on mercury dynamics in South America: A review IA Pestana, LS Azevedo, WR Bastos, CMM de Souza Chemosphere 219, 546-556 , 2019 2019 Citations: 73
MOST CITED SCHOLAR PUBLICATIONS
The impact of hydroelectric dams on mercury dynamics in South America: A review IA Pestana, LS Azevedo, WR Bastos, CMM de Souza Chemosphere 219, 546-556 , 2019 2019 Citations: 73
Mercury biomagnification in an ichthyic food chain of an amazon floodplain lake (Puruzinho Lake): Influence of seasonality and food chain modeling LS Azevedo, IA Pestana, MG Almeida, AF da Costa Nery, WR Bastos, ... Ecotoxicology and Environmental Safety 207, 111249 , 2021 2021 Citations: 42
Drought promotes increases in total mercury and methylmercury concentrations in fish from the lower Paraíba do Sul River, southeastern Brazil LS Azevedo, IA Pestana, ARM Rocha, AC Meneguelli-Souza, CAI Lima, ... Chemosphere 202, 483-490 , 2018 2018 Citations: 35
Mercury concentration in six fish guilds from a floodplain lake in western Amazonia: interaction between seasonality and feeding habits LS Azevedo, IA Pestana, AF da Costa Nery, WR Bastos, CMM Souza Ecological Indicators 111, 106056 , 2020 2020 Citations: 34
Do fish isotopic niches change in an Amazon floodplain lake over the hydrological regime? LS Azevedo, IA Pestana, MG Almeida, WR Bastos, CMM Souza Ecology of Freshwater Fish 31 (1), 72-80 , 2022 2022 Citations: 29
Influence of the flood pulse on mercury accumulation in detritivorous, herbivorous and omnivorous fish in Brazilian Amazonia LS Azevedo, IA Pestana, AFC Nery, WR Bastos, CMM Souza Ecotoxicology 28 (4), 478-485 , 2019 2019 Citations: 22
Methodology for maritime risk assessment in ports due to meteo‐oceanographic factors: the case of the port of suape, brazil L Azevêdo, H Duarte, D Galvão, P Michima, D Veleda, A Kreuger Risk analysis 41 (10), 1823-1839 , 2021 2021 Citations: 21
Arsenic in the lower drainage basin of the Paraíba do Sul River (Southeast Brazil): dynamics between the water column and sediment AC Meneguelli-Souza, IA Pestana, LS Azevedo, MG de Almeida, ... Environmental Monitoring and Assessment 193 (2), 57 , 2021 2021 Citations: 18
Organotropism of methylmercury in fish of the southeastern of Brazil LS Azevedo, MG Almeida, WR Bastos, MS Suzuki, M Recktenvald, ... Chemosphere 185, 746-753 , 2017 2017 Citations: 18
Variation in Hg accumulation between demersal and pelagic fish from Puruzinho Lake, Brazilian Amazon LS Azevedo, IA Pestana, AF da Costa Nery, WR Bastos, CMM Souza Ecotoxicology 28 (10), 1143-1149 , 2019 2019 Citations: 17
Spatial-temporal dynamics of Cr in fish from Puruzinho Lake (Western Amazon) and dietary risk assessment LS do Nascimento, L de Oliveira Silva, SM de Azevedo, R de Almeida, ... Chemosphere 300, 134576 , 2022 2022 Citations: 12
Risk of exposure to total and inorganic arsenic by meat intake among different age groups from Brazil: a probabilistic assessment LS Azevedo, IA Pestana, AC Meneguelli-Souza, B Ramos, DR Pessanha, ... Environmental Science and Pollution Research 25 (35), 35471-35478 , 2018 2018 Citations: 12
Exposure to toxic and essential trace elements through the intake of processed and meat cuts (beef and chicken) in southeastern Brazil B de Souza Ramos, IA Pestana, D Caldas, LS Azevedo, MG Almeida, ... Environmental monitoring and assessment 191 (8), 477 , 2019 2019 Citations: 11
Antinociceptive and anti-inflammatory potential, and chemical characterization of the dichloromethane fraction of Solanum lycocarpum (Solanaceae) ripe fruits by LC-DAD-MS MG Morais, AA Saldanha, IC Mendes, JPC Rodrigues, LS Azevedo, ... Journal of Ethnopharmacology 322, 117640 , 2024 2024 Citations: 10
Risk of exposure to Hg and pesticides residues in a traditional fishing community in the Amazon: a probabilistic approach based on dietary pattern LS Azevedo, IA Pestana, L Nascimento, RC Oliveira, WR Bastos, ... Environmental Science and Pollution Research 29 (23), 34164-34173 , 2022 2022 Citations: 9
Bioconcentration and translocation of Cd and Hg in a tomato ( Solanum lycopersicum ) from cultivated soils in southeastern Brazil CAI Lima, IA Pestana, LS Azevedo, DP Ribeiro, MG Almeida, CL Prins, ... Environmental monitoring and assessment 191 (2), 103 , 2019 2019 Citations: 9
Recent patents on the industrial application of alpha-amylases AVF Ferreira, FF Silva, AAM Silva, LS Azevedo, STD da Fonseca, ... Recent Patents on Biotechnology 14 (4), 251-268 , 2020 2020 Citations: 8
Arsenic in groundwater in Paraíba do Sul river, Brazil: sources, hydrogeochemistry, and correlation with redox parameters AC Meneguelli-Souza, IA Pestana, LS Azevedo, MG de Almeida, ... Environmental Earth Sciences 79 (9), 194 , 2020 2020 Citations: 5
Flood pulse as a driving force of Pb variation in four fish guilds from Puruzinho Lake (western Amazon) SM de Azevedo, LS do Nascimento, L de Oliveira Silva, MG de Almeida, ... Environmental Science and Pollution Research 30 (13), 38728-38737 , 2023 2023 Citations: 4
Arsenic pathways in the environment: the role of contaminated groundwater in the dispersion of arsenic to soil, vegetables and chicken meat BS Ramos, IA Pestana, AC Meneguelli-Souza, LS Azevedo, MG Almeida, ... International Journal of Environmental Research 15 (6), 921-934 , 2021 2021 Citations: 3
