1
|
Biscassi GF, Rabêlo WF, Sardeli R, Rodrigues Garcia GR, Brigante J, Daam MA, José Dos Santos Neto Á, Moscardi Dos Santos D, Vieira EM. Residual determination and acute toxicity of the neonicotinoid clothianidin in the neotropical stingless bee Tetragonisca angustula Latreille, 1811 (Apidae: Meliponini). Chemosphere 2024; 349:140878. [PMID: 38061563 DOI: 10.1016/j.chemosphere.2023.140878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 01/10/2024]
Abstract
Bees play a crucial role as natural pollinators, ensuring the maintenance and stability of the world's biodiversity and agricultural crops. Native bees in neotropical regions belong to the Meliponini tribe, a larger group that differs significantly in behavior and biology from honeybees (e.g., Apis mellifera) and solitary bees (e.g., Osmia spp.). Hence, the exposure and effects of pesticides is also likely to vary among these different species. The aim of this study was to develop an analytical method to determine the presence of the neonicotinoid clothianidin in the Brazilian native stingless bee Tetragonisca angustula (local common name: Jataí). The method used for the chemical analysis involved a QuEChERS technique combined with UHPLC-MS/MS analysis. The developed method was subsequently used to analyze collected field samples. In addition, the acute toxicity of the pesticide to T. angustula was evaluated in a laboratory bioassay evaluating both lethal and sublethal endpoints. The analytical method was successfully developed with detection and quantification limits of 1.55 and 5 μg L-1, respectively, along with a linear range of 1-5 ng mL-1. Clothianidin was detected in environmental samples (9.2-32.9 ng g-1), and the exposure experiments demonstrated acute oral toxicity to adults of T. angustula, (24 h-LD50 of 0.16 ng a.i./bee), as well as no significative interference in acetylcholinesterase activity. Considering the obtained toxicity endpoints for T. angustula and those reported in the literature for other bee species, this study revealed that T. angustula is more (lethally) sensitive to clothianidin than other bee species, including those commonly used in environmental risk assessment studies. This thus also supports the call for using native test species in (regional) risk assessment evaluations.
Collapse
Affiliation(s)
| | | | - Rafael Sardeli
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| | | | - Janete Brigante
- São Carlos School of Engineering, University of São Paulo, São Carlos, Brazil
| | - Michiel Adriaan Daam
- CENSE & CHANGE, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | | | - Dayana Moscardi Dos Santos
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil; Chemistry Department, Federal University of São Carlos, 13565-905, São Carlos, Brazil
| | - Eny Maria Vieira
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil.
| |
Collapse
|
2
|
Valença RM, Moreira RA, Espíndola ELG, Vieira EM. Ethylparaben Toxicity on Cladocerans Daphnia Similis and Ceriodaphnia Silvestrii and Species Sensitivity Analysis. Bull Environ Contam Toxicol 2023; 112:3. [PMID: 38017221 DOI: 10.1007/s00128-023-03832-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 11/01/2023] [Indexed: 11/30/2023]
Abstract
Parabens, a group of preservatives with a wide industrial range, threaten human and aquatic biota health due to their toxicity and endocrine disruption potential. As conventional wastewater treatment may not be enough to keep natural environments safe, toxicity studies are useful tools for supporting ecological risk assessments. Here, we focused on assessing ethylparaben's, one of the most common kinds of paraben, toxicity in the cladocerans Daphnia similis and Ceriodaphnia silvestrii. The EC50 sensitivity for D. similis and C. silvestrii was 24 (21-28) mg L- 1 and 25 (19-33) mg L- 1, respectively. Inhibition of reproduction and late development of females were observed in C. silvestrii exposed to 8 mg L- 1. Furthermore, species sensitivity distribution was used to assess ecological risk, and ethylparaben demonstrated low potential risk for aquatic biota.
Collapse
Affiliation(s)
- Rodrigo Maia Valença
- Post Graduate Program of Sciences of Environmental Engineering, São Carlos Engineering School, University of São Paulo, Av. Trabalhador São Carlense, 400, 13, São Carlos, 560-970, Brazil
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, Aalborg, 9220, Denmark
| | - Raquel Aparecida Moreira
- NEEA/SHS and PPGSEA, São Carlos Engineering School, University of São Paulo, Av. Trabalhador São Carlense, 400, São Carlos, 560-970, Brazil.
- Institute of Biological Sciences, Federal University of Rio Grande - FURG, Avenida Itália, Km 8, Rio Grande, Rio Grande do Sul, 96203-900, Brazil.
| | - Evaldo Luiz Gaeta Espíndola
- NEEA/SHS and PPGSEA, São Carlos Engineering School, University of São Paulo, Av. Trabalhador São Carlense, 400, São Carlos, 560-970, Brazil
| | - Eny Maria Vieira
- Post Graduate Program of Sciences of Environmental Engineering, São Carlos Engineering School, University of São Paulo, Av. Trabalhador São Carlense, 400, 13, São Carlos, 560-970, Brazil
- Department of Chemistry and Molecular Physics, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP, Brazil
| |
Collapse
|
3
|
Burgarelli JAM, Dos Santos DM, Prado FSR, Rabêlo WF, Sardeli R, Brigante J, Daam MA, Vieira EM. Abamectin and difenoconazole monitoring in strawberry flowers and pollen sampled from Tetragonisca angustula (Latreille) (Hymenoptera: Apidae) hives located in crop vicinities. Environ Sci Pollut Res Int 2023; 30:65401-65411. [PMID: 37084054 DOI: 10.1007/s11356-023-26886-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 04/04/2023] [Indexed: 05/03/2023]
Abstract
The increase in agricultural productivity associated with the emergence and the extensive use of pesticides is undeniable. However, strong evidence indicates that this continuous demand is causing serious environmental impacts and bringing toxic effects to associated biota as pollinating insects. The present work aims the determination of the insecticide abamectin (ABA) and the fungicide difenoconazole (DIF) in strawberry flowers (Fragaria x ananassa DUCH.) and pollen sampled from beehives of the stingless bee Tetragonisca angustula Latreille (Hymenoptera: Apidae) located nearby strawberry fields. For analysis, QuEChERS method was optimized, and the analytical performance of those two pesticides was verified. Then, the method was applied to strawberry flowers and the pollen was sampled during three field campaigns. While abamectin was not detected, the systemic fungicide difenoconazole was determined in almost all flowers and pollen samples, demonstrating the major persistence of this pesticide in investigated matrices. The results were then discussed about the difenoconazole application rate and transport to colonies to estimate a preliminary environmental risk assessment for stingless native bees. All calculations were proceeded considering exposure rates and toxicity data from the literature, adapted from Apis mellifera studies. In this sense, the determination, application, and discussion about risk assessment figure out as an important tool to the knowledge about the preliminary risks of native bees exposed to pesticides.
Collapse
Affiliation(s)
| | | | | | | | - Rafael Sardeli
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| | - Janete Brigante
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
- São Carlos Engineering School, University of São Paulo, São Carlos, Brazil
| | - Michiel Adriaan Daam
- CENSE, Department of Environmental Sciences and Engineering, Faculty of Sciences and Technology, New University of Lisbon, Caparica, Portugal
| | - Eny Maria Vieira
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil.
| |
Collapse
|
4
|
Rahman A, Ali MA, Xavier C, Santos DM, Daam MA, Azevedo EB, Brigante Castele J, Vieira EM. Modified QuEChERS Method for Extracting Thiamethoxam and Imidacloprid from Stingless Bees: Development, Application, and Green Metrics. Environ Toxicol Chem 2022; 41:2365-2374. [PMID: 35770720 DOI: 10.1002/etc.5419] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/07/2021] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
In the present study, a method for the determination of residues of the neonicotinoid insecticides thiamethoxam and imidacloprid in the stingless bee Melipona scutellaris Latreille (1811) was optimized through a factorial design, tested using green metrics, and then applied to exposed bees. It combines the extraction with a modified quick, easy, cheap, effective, rugged, and safe method and the determination by liquid chromatography-tandem mass spectrometry analysis. Different parameters such as the mass of the sample, dispersive sorbents, and elution solvents were assessed. Method validation parameters were checked and include sensitivity, specificity, and linearity. The limit of quantification of 0.0025 μg g-1 was obtained for both insecticides, where accuracy was 94%-100% with satisfactory intraday and interday precisions (relative standard deviation <10%). The qualified method was applied to orally and topically exposed bee samples, and the results indicated that it is suitable for the determination and quantification of neonicotinoid pesticide residues in this species. Moreover, green analytical metrics like the National Environmental Methods Index, Eco Scale score, high-performance liquid chromatography with an environmental assessment tool (HPLC-EAT), waste generation, and amount of sample were compared with methods described in the literature involving neonicotinoid analysis in honeybees. As a result, the present study displayed the highest Eco Scale score and HPLC-EAT score and the second smallest amount of sample and waste generated. Thus, the method meets green analytical metrics more than other methods. In this sense, besides the application, the multicriteria decision analysis tool employed suggests that this is a good option as a green analytical method. Environ Toxicol Chem 2022;41:2365-2374. © 2022 SETAC.
Collapse
Affiliation(s)
- Asma Rahman
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| | - Mian Abdul Ali
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| | - Chubraider Xavier
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| | | | - Michiel Adriaan Daam
- CENSE, Department of Environmental Sciences and Engineering, Faculty of Sciences and Technology, New University of Lisbon, Quinta da Torre, Caparica, Portugal
| | | | | | - Eny Maria Vieira
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| |
Collapse
|
5
|
Pompei CME, Campos LC, Vieira EM, Tucci A. The impact of micropollutants on native algae and cyanobacteria communities in ecological filters during drinking water treatment. Sci Total Environ 2022; 822:153401. [PMID: 35114242 DOI: 10.1016/j.scitotenv.2022.153401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 01/20/2022] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
An attractive alternative for drinking water production is ecological filtration. Previous studies have reported high removal levels of pharmaceutical and personal care products (PPCPs) by this technology. Algae and cyanobacteria play an important role in the biological activity of ecological filters. The aim of this study was to characterize and identify the community of algae and cyanobacteria in relation to its composition, density and biovolume from 22 ecological filters that received spikings of 2 μg L-1 PPCPs. For algae and cyanobacteria species, triplicate samples were collected before and 96 h after each spiking from the interface between the top sand layer of the ecological filters and the supernatant water. Results show that Chlorophyceae and Cyanobacteria were present in high numbers of taxa and abundance. The specie Lepocinclis cf. ovum (Euglenophyceae) had the highest percentage occurrence/abundance and frequency into the filters, indicating a possible tolerance by Lepocinclis cf. ovum to the concentration of selected PPCPs. Although the concentration of PPCPs did not affect the treated water quality, they did affect the algae and cyanobacteria community. No differences were detected between filters that received a single PPCP and filters that received a mixture of the six compounds. Also, changes in the composition of algae and cyanobacteria communities were observed before and 96 h after the spikings.
Collapse
Affiliation(s)
- Caroline M Erba Pompei
- Water Resources and Applied Ecology Center, São Carlos School of Engineering, University of São Paulo, São Carlos, SP, Brazil; Department of Civil, Environmental and Geomatic Engineering, University College London, Gower Street, London WC1E 6BT, United Kingdom; São Paulo State University (UNESP), School of Engineering Bauru, Department of Civil and Environmental Engineering, Bauru, SP, Brazil.
| | - Luiza C Campos
- Department of Civil, Environmental and Geomatic Engineering, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Eny Maria Vieira
- Department of Chemistry and Molecular Physics, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP, Brazil
| | - Andréa Tucci
- Nucleus of Phycology, Institute of Botany, São Paulo, SP, Brazil
| |
Collapse
|
6
|
Barbosa-Medina AM, Maciel EVS, Dos Santos DM, Lanças FM, Vieira EM. Neonicotinoids exposure assessment in Africanized honey bees ( Apis mellifera L.) by using an environmentally-friendly sample preparation technique followed by UPLC-MS/MS. J Environ Sci Health B 2022; 57:252-262. [PMID: 35264079 DOI: 10.1080/03601234.2022.2047389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A miniaturized QuEChERS extraction method followed by ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was developed to analyze thiamethoxam and imidacloprid in 0.3 g of lyophilized Africanized honey bees (Apis mellifera L.). The work aimed to estimate honey bees' exposure to pesticides at the nanogram/gram (ng g-1) levels, using small sample and reagent quantities. Low amounts of solvents and salts were employed - 15× less than used in traditional methods. Average recoveries ranged from 64.5% to 99.7%, with repeatability below 20% for samples spiked at 3 and 167 ng g-1. LOD and LOQ were 0.7, and 3 ng g-1 for both pesticides. Applying the proposed approach, honey bee samples from different apiaries from the State of São Paulo (Brazil) were analyzed. The pesticides were detected in concentrations between 7.0 and 27.0 ng g-1. Thus, the proposed method can be used as a greener alternative to analyze the two neonicotinoids at trace levels in small quantities of bees, consequently saving chemicals and waste.
Collapse
Affiliation(s)
| | | | | | | | - Eny Maria Vieira
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP, Brazil
| |
Collapse
|
7
|
Lima JZ, Ferreira da Silva E, Patinha C, Durães N, Vieira EM, Rodrigues VGS. Sorption of arsenic by composts and biochars derived from the organic fraction of municipal solid wastes: Kinetic, isotherm and oral bioaccessibility study. Environ Res 2022; 204:111988. [PMID: 34480948 DOI: 10.1016/j.envres.2021.111988] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 08/27/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
The historic contamination of water and soils by arsenic (As) is an extremely alarming environmental and public health issue worldwide. This study investigated the relationship between As sorption and physicochemical properties of composts and biochars derived from the organic fraction of municipal solid wastes (OFMSW) towards the development of promising sorbents with value-added solid wastes management solutions. The sorbents were characterized and their effectiveness on the As sorption was tested. Several isothermal and kinetic sorption models were used for the prediction of sorption. Composts did not show promising sorption capacities, and in some cases, the As immobilization was practically null. In contrast, biochars achieved higher sorption performance, and the experimental data fitted well on Dubinin-Rabushkevich and Langmuir models, with higher R2 values. The maximum sorption capacities of BC700 estimated by such models were 6.495 and 170.252 mg g-1, respectively, whereas those of BC500 estimated by D-R and Langmuir models were only 0.066 and 0.070 mg g-1, respectively. In sorption kinetics, As was retained onto biochars at a faster first stage, reaching equilibrium after approximately 1 h and 2 h for initial concentrations of 10 and 100 mg L-1. The pseudo-second-order, Ritchie's second-order, Ritchie's, and Elovich models more adequately described the sorption kinetics of As onto biochars with high R2 values. Overall, the complexation and precipitation were predominant mechanisms for As sorption by OFMSW-derived biochars. Furthermore, the mathematical models indicated contributions arise from physisorption and external and internal diffusion mechanisms. Although BC700 can immobilize large As amounts, the gastric phase of the oral bioaccessibility test revealed more than 80% of the sorbed As could be released under conditions similar to a human stomach (pH~1.2). Such conclusions have given important insights about the refining of effective and eco-friendly remediation technologies for the management and rehabilitation of As-contaminated soil and water, particularly in developing countries.
Collapse
Affiliation(s)
- Jacqueline Zanin Lima
- Department of Geotechnical Engineering, São Carlos School of Engineering, University of São Paulo, 400 Trabalhador São Carlense Ave., 13566-590, São Carlos, Brazil; GeoBioTec, Department of Geoscience, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Eduardo Ferreira da Silva
- GeoBioTec, Department of Geoscience, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Carla Patinha
- GeoBioTec, Department of Geoscience, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Nuno Durães
- GeoBioTec, Department of Geoscience, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Eny Maria Vieira
- São Carlos Institute of Chemistry, University of São Paulo, 400 Trabalhador São Carlense Ave., 13566-590, São Carlos, Brazil
| | - Valéria Guimarães Silvestre Rodrigues
- Department of Geotechnical Engineering, São Carlos School of Engineering, University of São Paulo, 400 Trabalhador São Carlense Ave., 13566-590, São Carlos, Brazil.
| |
Collapse
|
8
|
Galinaro CA, Spadoto M, de Aquino FWB, de Souza Pelinson N, Vieira EM. Environmental risk assessment of parabens in surface water from a Brazilian river: the case of Mogi Guaçu Basin, São Paulo State, under precipitation anomalies. Environ Sci Pollut Res Int 2022; 29:8816-8830. [PMID: 34491494 DOI: 10.1007/s11356-021-16315-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
Parabens are preservatives widely used by industry since these compounds have antifungal properties, relative low cost, and stability over a wide pH range. This study aims to quantify and assess the environmental risks of methylparaben (MP), ethylparaben (EP), propylparaben (PP), and butylparaben (BP) in surface water from a Brazilian River, Mogi Guaçu. The State of São Paulo, including the Mogi Guaçu River region, suffered from a period of intense drought and high temperatures, which caused anomalies in river flows and water supply problems. The water samples were collected from 14 locations, along 300 km of river extension, at four different seasons. Samples were previously extracted and pre-concentrated by dispersive liquid-liquid microextraction (DLLME) and later analyzed by ultra-performance liquid chromatography coupled with electrospray ionization in tandem with mass spectrometry (UPLC-ESI-MS/MS) detector. During the sampling period, PP was detected in 89.3% of the water samples, MP in 87.5%, EP in 73.2%, and BP in 48.2%. The sum of parabens' average levels was 42.2 μg L-1 in Winter, 41.5 μg L-1 in Summer, 36.6 μg L-1 in Autumn, and 31.5 μg L-1 in Spring. These levels can be attributed to the smaller dilution effect caused by the drought period. Also, ecological risk assessment indicated that parabens could take a low, medium, and high risk for target organisms in the measured aquatic environments, especially considering Pimephales promelas where 15% of the samples do not present potential risk, 84% of samples can present medium risk and only 1% have low risk. Besides, the risks for BP are also considerably higher, when almost 40% presents for high risks and 60% for medium risks. The present study indicates worrisome threats to the water source and to allegedly protected biodiversity and, therefore, urgent actions are needed to effectively protect.
Collapse
Affiliation(s)
- Carlos Alexandre Galinaro
- São Carlos Institute of Chemistry, University of São Paulo, Avenida do Trabalhador São Carlense 400, CEP 13.560-970, São Carlos, São Paulo, Brazil.
| | - Mariangela Spadoto
- Water Resources and Applied Ecology Center, São Carlos School of Engineering, University of São Paulo, Avenida do Trabalhador São Carlense, 400, 13.560-970, São Carlos, São Paulo, Brazil
| | - Francisco Wendel Batista de Aquino
- Chemistry Department, Federal University of São Carlos, Rodovia Washington Luís s/n km 235, P.O. Box 676, São Paulo, São Carlos, 13565-905, Brazil
| | - Natália de Souza Pelinson
- São Carlos School of Engineering (EESC), University of São Paulo (USP), 400 Trabalhador São Carlense Avenue, São Carlos, SP, 13566-590, Brazil
| | - Eny Maria Vieira
- São Carlos Institute of Chemistry, University of São Paulo, Avenida do Trabalhador São Carlense 400, CEP 13.560-970, São Carlos, São Paulo, Brazil
| |
Collapse
|
9
|
Prado FSRD, Dos Santos DM, de Almeida Oliveira TM, Micheletti Burgarelli JA, Castele JB, Vieira EM. Determination and uptake of abamectin and difenoconazole in the stingless bee Melipona scutellaris Latreille, 1811 via oral and topic acute exposure. Environ Pollut 2020; 265:114313. [PMID: 32806434 DOI: 10.1016/j.envpol.2020.114313] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 06/11/2023]
Abstract
Bees are considered as important providers of ecosystem services, acting via pollination process in crops and native plants, and contributing significantly to the maintenance of biodiversity. However, the decrease of bee's population has been observed worldwide and besides other factors, this collapse is also related to the extensive use of pesticides. In this sense, studies involving the assessment of adverse effects and the uptake of pesticides by bees are of great concern. This work presents an analytical method for the determination of the insecticide abamectin and the fungicide difenoconazole in the stingless bee Melipona scutellaris exposed via oral and topic to endpoints concentrations of active ingredients (a.i.) alone and in commercial formulations and the discussion about its mortality and uptake. For this purpose, QuEChERS (Quick, Easy, Cheap, Efficient, Rugged and Safe) acetate modified method was used for extraction and pesticides were determined by LC-MS/MS. The validation parameters have included: a linear range between 0.01 and 1.00 μg mL-1; and LOD and LOQ of 0.038 and 0.076 μg g-1 for abamectin and difenoconazole, respectively. The uptake of tested pesticides via oral and topic was verified by the accumulation in adult forager bees, mainly when the commercial product was tested. Mortality was observed to be higher in oral exposure than in topic tests for both pesticides. For abamectin in a commercial formulation (a.i.) no differences were observed for oral or topic exposure. On the other hand, for difenoconazole, topic exposure had demonstrated higher accumulation in bees, according to the increase of received dose. Through the results, uptake and the possible consequences of bioaccumulated pesticides are also discussed and can contribute to the knowledge about the risks involving the exposure of bees to these compounds.
Collapse
Affiliation(s)
| | | | | | | | - Janete Brigante Castele
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil; São Carlos Engineering School, University of São Paulo, São Carlos, Brazil
| | - Eny Maria Vieira
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil.
| |
Collapse
|
10
|
Pompei CME, Campos LC, da Silva BF, Fogo JC, Vieira EM. Occurrence of PPCPs in a Brazilian water reservoir and their removal efficiency by ecological filtration. Chemosphere 2019; 226:210-219. [PMID: 30927673 DOI: 10.1016/j.chemosphere.2019.03.122] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 03/12/2019] [Accepted: 03/17/2019] [Indexed: 05/20/2023]
Abstract
The presence of PPCPs (Pharmaceuticals and Personal Care Products) in water sources and drinking water has concerned researchers in recent times. This study was carried out to evaluate the occurrence of 6 PPCPs (namely paracetamol, diclofenac, naproxen, ibuprofen, benzophenone-3 and methylparaben) in the Lobo reservoir, their degradation products, and how efficiently they were removed by 22 ecological filters, considering individual and mixture of compounds. There were 3 spiking events of PPCPs (2 μg L-1) in the ecological filter influents conducted with a lag period of 15 days between spikes. Water samples were collected from the influent and effluent of the filters at 3, 6 and 24 h after each spiking event. All target PPCPs were identified in the Lobo reservoir water in the range of μg L-1. The personal care products were detected with 100% frequency in the samples, and in higher concentrations compared to the pharmaceuticals. Degradation products of diclofenac and benzophenone-3 were identified in the water samples. Results of this investigation show that ecological filtration was an effective process (70-99%) to remove 2 μg L-1 of the selected PPCPs, and demonstrated that the filters were resilient to individual compounds and to their mixtures.
Collapse
Affiliation(s)
- Caroline Moço Erba Pompei
- Water Resources and Applied Ecology Center, São Carlos School of Engineering, University of São Paulo, São Carlos, SP, Brazil.
| | - Luiza Cintra Campos
- Department of Civil, Environmental and Geomatic Engineering, University College London, Gower Street, London, WC1E 6BT, United Kingdom.
| | - Bianca Ferreira da Silva
- Institute of Chemistry, State University "Julio de Mesquita Filho"-UNESP, Araraquara, SP, Brazil.
| | - José Carlos Fogo
- Department of Statistics, Federal University of São Carlos, SP, Brazil.
| | - Eny Maria Vieira
- Department of Chemistry and Molecular Physics, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP, Brazil.
| |
Collapse
|
11
|
Spadoto M, Sueitt APE, Galinaro CA, Pinto TDS, Pompei CME, Botta CMR, Vieira EM. Ecotoxicological effects of bisphenol A and nonylphenol on the freshwater cladocerans Ceriodaphnia silvestrii and Daphnia similis. Drug Chem Toxicol 2017; 41:449-458. [DOI: 10.1080/01480545.2017.1381109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mariângela Spadoto
- Water Resources and Applied Ecology Center, São Carlos School of Engineering, University of São Paulo, São Carlos, Brazil
| | - Ana Paula Erbetta Sueitt
- Department of Hydraulics and Sanitation, São Carlos School of Engineering, University of São Paulo, São Carlos, Brazil
| | - Carlos Alexandre Galinaro
- Department of Chemistry and Molecular Physics, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| | - Tiago da Silva Pinto
- Water Resources and Applied Ecology Center, São Carlos School of Engineering, University of São Paulo, São Carlos, Brazil
| | - Caroline Moço Erba Pompei
- Water Resources and Applied Ecology Center, São Carlos School of Engineering, University of São Paulo, São Carlos, Brazil
| | - Clarice Maria Rispoli Botta
- Water Resources and Applied Ecology Center, São Carlos School of Engineering, University of São Paulo, São Carlos, Brazil
| | - Eny Maria Vieira
- Department of Chemistry and Molecular Physics, São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil
| |
Collapse
|
12
|
Rocha Diniz LG, Afonso-Olivares C, Torres-Padrón ME, Montesdeoca-Esponda S, Guedes-Alonso R, Vieira EM, Rodrigues dos Santos Franco TC, Sosa-Ferrera Z, Santana-Rodríguez JJ. Analysis of Biocides in Molluscs Using Different Extraction Methods and Liquid Chromatography Tandem Mass Spectrometry. CURR ANAL CHEM 2017. [DOI: 10.2174/1573411012666161102161606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Lia Gracy Rocha Diniz
- Laboratório de Química Analítica Ambiental e Ecotoxicologia. Instituto de Química de São Carlos - USP. Laboratório de Química Analitica e Ecotoxicologia -LAEC. Universidade Federal do Maranhão – UFMA, Spain
| | - Cristina Afonso-Olivares
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
| | - Maria Esther Torres-Padrón
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
| | - Sarah Montesdeoca-Esponda
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
| | - Rayco Guedes-Alonso
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
| | - Eny Maria Vieira
- Laboratório de Química Analítica Ambiental e Ecotoxicologia. Instituto de Química de São Carlos - USP. Laboratório de Química Analitica e Ecotoxicologia -LAEC. Universidade Federal do Maranhão – UFMA, Spain
| | - Teresa Cristina Rodrigues dos Santos Franco
- Laboratório de Química Analítica Ambiental e Ecotoxicologia. Instituto de Química de São Carlos - USP. Laboratório de Química Analitica e Ecotoxicologia -LAEC. Universidade Federal do Maranhão – UFMA, Spain
| | - Zoraida Sosa-Ferrera
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
| | - José Juan Santana-Rodríguez
- Instituto Universitario de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain
| |
Collapse
|
13
|
Ferraz FM, Bruni AT, Povinelli J, Vieira EM. Leachate/domestic wastewater aerobic co-treatment: A pilot-scale study using multivariate analysis. J Environ Manage 2016; 166:414-9. [PMID: 26551262 DOI: 10.1016/j.jenvman.2015.10.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 10/12/2015] [Accepted: 10/18/2015] [Indexed: 05/21/2023]
Abstract
Multivariate analysis was used to identify the variables affecting the performance of pilot-scale activated sludge (AS) reactors treating old leachate from a landfill and from domestic wastewater. Raw leachate was pre-treated using air stripping to partially remove the total ammoniacal nitrogen (TAN). The control AS reactor (AS-0%) was loaded only with domestic wastewater, whereas the other reactor was loaded with mixtures containing leachate at volumetric ratios of 2 and 5%. The best removal efficiencies were obtained for a ratio of 2%, as follows: 70 ± 4% for total suspended solids (TSS), 70 ± 3% for soluble chemical oxygen demand (SCOD), 70 ± 4% for dissolved organic carbon (DOC), and 51 ± 9% for the leachate slowly biodegradable organic matter (SBOM). Fourier transform infrared (FTIR) spectroscopic analysis confirmed that most of the SBOM was removed by partial biodegradation rather than dilution or adsorption of organics in the sludge. Nitrification was approximately 80% in the AS-0% and AS-2% reactors. No significant accumulation of heavy metals was observed for any of the tested volumetric ratios. Principal component analysis (PCA) and partial least squares (PLS) indicated that the data dimension could be reduced and that TAN, SCOD, DOC and nitrification efficiency were the main variables that affected the performance of the AS reactors.
Collapse
Affiliation(s)
- F M Ferraz
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo - Av. Trabalhador São Carlense, 400, CEP 13566-590, São Carlos, São Paulo, Brazil.
| | - A T Bruni
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Brazil
| | - J Povinelli
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo - Av. Trabalhador São Carlense, 400, CEP 13566-590, São Carlos, São Paulo, Brazil
| | - E M Vieira
- Instituto de Química de São Carlos, Universidade de São Paulo - Av.Trabalhador São Carlense, 400, CEP 13566-590, São Carlos, São Paulo, Brazil
| |
Collapse
|
14
|
Souza JP, Betran AP, Dumont A, de Mucio B, Gibbs Pickens CM, Deneux-Tharaux C, Ortiz-Panozo E, Sullivan E, Ota E, Togoobaatar G, Carroli G, Knight H, Zhang J, Cecatti JG, Vogel JP, Jayaratne K, Leal MC, Gissler M, Morisaki N, Lack N, Oladapo OT, Tunçalp Ö, Lumbiganon P, Mori R, Quintana S, Costa Passos AD, Marcolin AC, Zongo A, Blondel B, Hernández B, Hogue CJ, Prunet C, Landman C, Ochir C, Cuesta C, Pileggi-Castro C, Walker D, Alves D, Abalos E, Moises E, Vieira EM, Duarte G, Perdona G, Gurol-Urganci I, Takahiko K, Moscovici L, Campodonico L, Oliveira-Ciabati L, Laopaiboon M, Danansuriya M, Nakamura-Pereira M, Costa ML, Torloni MR, Kramer MR, Borges P, Olkhanud PB, Pérez-Cuevas R, Agampodi SB, Mittal S, Serruya S, Bataglia V, Li Z, Temmerman M, Gülmezoglu AM. A global reference for caesarean section rates (C-Model): a multicountry cross-sectional study. BJOG 2015; 123:427-36. [PMID: 26259689 PMCID: PMC4873961 DOI: 10.1111/1471-0528.13509] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2015] [Indexed: 12/01/2022]
Abstract
Objective To generate a global reference for caesarean section (CS) rates at health facilities. Design Cross‐sectional study. Setting Health facilities from 43 countries. Population/Sample Thirty eight thousand three hundred and twenty‐four women giving birth from 22 countries for model building and 10 045 875 women giving birth from 43 countries for model testing. Methods We hypothesised that mathematical models could determine the relationship between clinical‐obstetric characteristics and CS. These models generated probabilities of CS that could be compared with the observed CS rates. We devised a three‐step approach to generate the global benchmark of CS rates at health facilities: creation of a multi‐country reference population, building mathematical models, and testing these models. Main outcome measures Area under the ROC curves, diagnostic odds ratio, expected CS rate, observed CS rate. Results According to the different versions of the model, areas under the ROC curves suggested a good discriminatory capacity of C‐Model, with summary estimates ranging from 0.832 to 0.844. The C‐Model was able to generate expected CS rates adjusted for the case‐mix of the obstetric population. We have also prepared an e‐calculator to facilitate use of C‐Model (www.who.int/reproductivehealth/publications/maternal_perinatal_health/c-model/en/). Conclusions This article describes the development of a global reference for CS rates. Based on maternal characteristics, this tool was able to generate an individualised expected CS rate for health facilities or groups of health facilities. With C‐Model, obstetric teams, health system managers, health facilities, health insurance companies, and governments can produce a customised reference CS rate for assessing use (and overuse) of CS. Tweetable abstract The C‐Model provides a customized benchmark for caesarean section rates in health facilities and systems. The C‐Model provides a customized benchmark for caesarean section rates in health facilities and systems.
Collapse
Affiliation(s)
- J P Souza
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - A P Betran
- Department of Reproductive Health and Research, UNDP-UNFPA-UNICEF-WHO World Bank Special Programme of Research, Development and Research Training in Human Reproduction, WHO, Geneva, Switzerland
| | - A Dumont
- Research Institute for Development, Université Paris Descartes, Sorbonne Paris Cité, UMR 216, Paris, France
| | - B de Mucio
- Latin American Center for Perinatology, Women and Reproductive Health, (CLAP/WR), WHO Regional Office for the Americas, Montevideo, Uruguay
| | - C M Gibbs Pickens
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - C Deneux-Tharaux
- Inserm U1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team, Center for Epidemiology and Biostatistics, Paris Descartes University, Paris, France
| | - E Ortiz-Panozo
- Center for Population Health Research, National Institute of Public Health, Cuernavaca, Mexico
| | - E Sullivan
- Faculty of Health, University of Technology, Sydney, NSW, Australia
| | - E Ota
- Department of Health Policy, National Center for Child Health and Development, Tokyo, Japan
| | - G Togoobaatar
- Department of Health Policy, National Center for Child Health and Development, Tokyo, Japan
| | - G Carroli
- Centro Rosarino de Estudios Perinatales, Rosario, Argentina
| | - H Knight
- Royal College of Obstetricians and Gynaecologists, Office for Research and Clinical Audit, Lindsay Stewart R&D Centre, London, UK.,Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - J Zhang
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J G Cecatti
- Department of Obstetrics and Gynaecology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - J P Vogel
- Department of Reproductive Health and Research, UNDP-UNFPA-UNICEF-WHO World Bank Special Programme of Research, Development and Research Training in Human Reproduction, WHO, Geneva, Switzerland
| | - K Jayaratne
- Family Health Bureau, Ministry of Health, Colombo, Sri Lanka
| | - M C Leal
- Escola Nacional de Saúde Pública (ENSP), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - M Gissler
- National Institute for Health and Welfare, Helsinki, Finland
| | - N Morisaki
- Department of Health Policy, National Center for Child Health and Development, Tokyo, Japan.,Department of Paediatrics, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - N Lack
- Bayerische Arbeitsgemeinschaft für Qualitätssicherung in der Stationären Versorgung (BAQ), Bayerische Krankenhausgesellschaft, Munich, Germany
| | - O T Oladapo
- Department of Reproductive Health and Research, UNDP-UNFPA-UNICEF-WHO World Bank Special Programme of Research, Development and Research Training in Human Reproduction, WHO, Geneva, Switzerland
| | - Ö Tunçalp
- Department of Reproductive Health and Research, UNDP-UNFPA-UNICEF-WHO World Bank Special Programme of Research, Development and Research Training in Human Reproduction, WHO, Geneva, Switzerland
| | - P Lumbiganon
- Department of Obstetrics and Gynecology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - R Mori
- Department of Health Policy, National Center for Child Health and Development, Tokyo, Japan
| | - S Quintana
- Department of Gynaecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - A D Costa Passos
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - A C Marcolin
- Department of Gynaecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - A Zongo
- Research Institute for Development, Université Paris Descartes, Sorbonne Paris Cité, UMR 216, Paris, France.,Direction de la santé de la famille, Ministère de la Santé, Ouagadougou, Burkina Faso
| | - B Blondel
- Inserm U1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team, Center for Epidemiology and Biostatistics, Paris Descartes University, Paris, France
| | - B Hernández
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA
| | - C J Hogue
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - C Prunet
- Inserm U1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team, Center for Epidemiology and Biostatistics, Paris Descartes University, Paris, France
| | - C Landman
- Escola Nacional de Saúde Pública (ENSP), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - C Ochir
- School of Public Health, Health Sciences University of Mongolia, Ulaanbaatar, Mongolia
| | - C Cuesta
- Centro Rosarino de Estudios Perinatales, Rosario, Argentina
| | - C Pileggi-Castro
- GLIDE Technical Cooperation and Research, Ribeirão Preto, SP, Brazil.,Department of Paediatrics, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirão Preto, SP, Brazil
| | - D Walker
- Departments of Obstetrics & Gynaecology and Global Health Sciences, University of California, San Francisco, CA, USA
| | - D Alves
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - E Abalos
- Centro Rosarino de Estudios Perinatales, Rosario, Argentina
| | - Ecd Moises
- Department of Gynaecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - E M Vieira
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - G Duarte
- Department of Gynaecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - G Perdona
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - I Gurol-Urganci
- Royal College of Obstetricians and Gynaecologists, Office for Research and Clinical Audit, Lindsay Stewart R&D Centre, London, UK.,Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - K Takahiko
- Department of Health Policy, National Center for Child Health and Development, Tokyo, Japan
| | - L Moscovici
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil.,GLIDE Technical Cooperation and Research, Ribeirão Preto, SP, Brazil
| | - L Campodonico
- Centro Rosarino de Estudios Perinatales, Rosario, Argentina
| | - L Oliveira-Ciabati
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil.,GLIDE Technical Cooperation and Research, Ribeirão Preto, SP, Brazil
| | - M Laopaiboon
- Department of Biostatistics and Demography, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
| | - M Danansuriya
- Family Health Bureau, Ministry of Health, Colombo, Sri Lanka
| | - M Nakamura-Pereira
- Escola Nacional de Saúde Pública (ENSP), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - M L Costa
- Department of Obstetrics and Gynaecology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - M R Torloni
- Department of Obstetrics, School of Medicine of São Paulo, São Paulo Federal University, São Paulo, Brazil
| | - M R Kramer
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - P Borges
- Escola Nacional de Saúde Pública (ENSP), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - P B Olkhanud
- School of Public Health, Health Sciences University of Mongolia, Ulaanbaatar, Mongolia
| | - R Pérez-Cuevas
- Social Protection and Health Division, Inter-American Development Bank, Mexico City, Mexico
| | - S B Agampodi
- Family Health Bureau, Ministry of Health, Colombo, Sri Lanka
| | - S Mittal
- Fortis Memorial Research Institute, Gurgaon, Haryana, India
| | - S Serruya
- Latin American Center for Perinatology, Women and Reproductive Health, (CLAP/WR), WHO Regional Office for the Americas, Montevideo, Uruguay
| | - V Bataglia
- Hospital Nacional de Itauguá, Itauguá, Paraguay
| | - Z Li
- Faculty of Health, University of Technology, Sydney, NSW, Australia
| | - M Temmerman
- Department of Reproductive Health and Research, UNDP-UNFPA-UNICEF-WHO World Bank Special Programme of Research, Development and Research Training in Human Reproduction, WHO, Geneva, Switzerland
| | - A M Gülmezoglu
- Department of Reproductive Health and Research, UNDP-UNFPA-UNICEF-WHO World Bank Special Programme of Research, Development and Research Training in Human Reproduction, WHO, Geneva, Switzerland
| |
Collapse
|
15
|
Ferraz FM, Povinelli J, Pozzi E, Vieira EM, Trofino JC. Co-treatment of landfill leachate and domestic wastewater using a submerged aerobic biofilter. J Environ Manage 2014; 141:9-15. [PMID: 24762568 DOI: 10.1016/j.jenvman.2014.03.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 03/24/2014] [Accepted: 03/29/2014] [Indexed: 06/03/2023]
Abstract
This study used a pilot-scale submerged aerobic biofilter (SAB) to evaluate the co-treatment of domestic wastewater and landfill leachate that was pre-treated by air stripping. The leachate tested volumetric ratios were 0, 2, and 5%. At a hydraulic retention time of 24 h, the SAB was best operated with a volumetric ratio of 2% and removed 98% of the biochemical oxygen demand (BOD), 80% of the chemical oxygen demand (COD) and dissolved organic carbon (DOC), and 90% of the total suspended solids (TSS). A proposed method, which we called the "equivalent in humic acid" (Eq.HA) approach, indicated that the hardly biodegradable organic matter in leachate was removed by partial degradation (71% of DOC Eq.HA removal). Adding leachate at a volumetric ratio of 5%, the concentration of the hardly biodegradable organic matter was decreased primarily as a result of dilution rather than biodegradation, which was confirmed by Fourier transform infrared (FTIR) spectroscopy. The total ammoniacal nitrogen (TAN) was mostly removed (90%) by nitrification, and the SAB performances at the volumetric ratios of 0 and 2% were equal. For the three tested volumetric ratios of leachate (0, 2, and 5%), the concentrations of heavy metals in the treated samples were below the local limits.
Collapse
Affiliation(s)
- F M Ferraz
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, Av.Trabalhador Sao Carlense, 400, CEP 13566-590 Sao Carlos, São Paulo, Brazil.
| | - J Povinelli
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, Av.Trabalhador Sao Carlense, 400, CEP 13566-590 Sao Carlos, São Paulo, Brazil
| | - E Pozzi
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, Av.Trabalhador Sao Carlense, 400, CEP 13566-590 Sao Carlos, São Paulo, Brazil
| | - E M Vieira
- Instituto de Química de São Carlos, Universidade de São Paulo, Av.Trabalhador Sao Carlense, 400, CEP 13566-590 Sao Carlos, Sao Paulo, Brazil
| | - J C Trofino
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, Av.Trabalhador Sao Carlense, 400, CEP 13566-590 Sao Carlos, São Paulo, Brazil
| |
Collapse
|
16
|
de Andrade FM, de Macedo AN, Vieira EM. DETERMINATION OF MICROCYSTIN-LR IN CYANOBACTERIAL BLOOMS FROM THE MOGI GUAÇU RIVER (BRAZIL) BY HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2012.723086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Adriana Nori de Macedo
- a Department of Chemistry and Molecular Phisics , University of São Paulo , Sao Carlos , Brazil
| | - Eny Maria Vieira
- a Department of Chemistry and Molecular Phisics , University of São Paulo , Sao Carlos , Brazil
| |
Collapse
|
17
|
Campos R, Ferraz FM, Vieira EM, Povinelli J. Aerobic co-treatment of landfill leachate and domestic wastewater - are slowly biodegradable organics removed or simply diluted? Water Sci Technol 2014; 70:1941-1947. [PMID: 25521128 DOI: 10.2166/wst.2014.439] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study investigated the co-treatment of landfill leachate/domestic wastewater in bench-scale activated sludge (AS) reactors to determine whether the slowly biodegradable organic matter (SBOM) was removed rather than diluted. The AS reactors were loaded with mixtures of raw leachate and leachate that was pretreated by air stripping. The tested volumetric ratios were 0%, 0.2%, 2% and 5%. For all of the tested conditions, the reactors performed better when pretreated leachate was used rather than raw leachate, and the best volumetric ratio was 2%. The following removals were obtained: 97% for the biochemical oxygen demand (BOD5,20), 79% for total suspended solids, 77% for dissolved organic carbon and 84% for soluble chemical oxygen demand. Most of the pretreated leachate SBOM (65%) was removed rather than diluted or adsorbed into the sludge, as confirmed by Fourier transform infrared (FTIR) spectroscopy analyses.
Collapse
Affiliation(s)
- R Campos
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, CEP 13566-590 São Carlos, São Paulo, Brasil E-mail:
| | - F M Ferraz
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, CEP 13566-590 São Carlos, São Paulo, Brasil E-mail:
| | - E M Vieira
- Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, CEP 13566-590 São Carlos, São Paulo, Brasil
| | - J Povinelli
- Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, CEP 13566-590 São Carlos, São Paulo, Brasil E-mail:
| |
Collapse
|
18
|
Cordeiro D, Cappelini LTD, Verbinnen RT, Vicente GHL, Novelli A, Espíndola ELG, Vieira EM. Short-Time Derivatization Method for Analysis of Abamectin in Water Using High-Performance Liquid Chromatography Coupled to Fluorescence Detector. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ajac.2014.516117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
19
|
Abstract
An old landfill leachate was pre-treated in a pilot-scale aerated packed tower operated in batch mode for total ammoniacal nitrogen (TAN) removal. The stripped ammonia was recovered with a 0.4 mol L(-1) H2SO4 solution, deionized water and tap water. Ca(OH)2 (95% purity) or commercial hydrated lime was added to the raw leachate to adjust its pH to 11, causing removal of colour (82%) and heavy metals (70-90% for Zn, Fe and Mn). The 0.4 molL(-1) H2SO4 solution was able to neutralize 80% of the stripped ammonia removed from 12 L of leachate. The effectiveness of the neutralization of ammonia with deionized water was 75%. Treating 100 L of leachate, the air stripping tower removed 88% of TAN after 72 h of aeration, and 87% of the stripped ammonia was recovered in two 31 L pilot-scale absorption units filled with 20 L of tap water.
Collapse
Affiliation(s)
- Fernanda M Ferraz
- Department of Hydraulics and Sanitation, Escola de Engenharia de São Carlos, Universidade São Paulo, São Carlos, Brazil.
| | - Jurandyr Povinelli
- Department of Hydraulics and Sanitation, Escola de Engenharia de São Carlos, Universidade São Paulo, São Carlos, Brazil
| | - Eny Maria Vieira
- Sao Carlos Chemistry Institute, Universidade de São Paulo, São Carlos, Brazil
| |
Collapse
|
20
|
Rigobello ES, Dantas ADB, Di Bernardo L, Vieira EM. Removal of diclofenac by conventional drinking water treatment processes and granular activated carbon filtration. Chemosphere 2013; 92:184-191. [PMID: 23540811 DOI: 10.1016/j.chemosphere.2013.03.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Revised: 03/06/2013] [Accepted: 03/07/2013] [Indexed: 06/02/2023]
Abstract
This study was carried out to evaluate the efficiency of conventional drinking water treatment processes with and without pre-oxidation with chlorine and chlorine dioxide and the use of granular activated carbon (GAC) filtration for the removal of diclofenac (DCF). Water treatment was performed using the Jar test with filters on a lab scale, employing nonchlorinated artesian well water prepared with aquatic humic substances to yield 20HU true color, kaolin turbidity of 70 NTU and 1mgL(-1) DCF. For the quantification of DCF in water samples, solid phase extraction and HPLC-DAD methods were developed and validated. There was no removal of DCF in coagulation with aluminum sulfate (3.47mgAlL(-1) and pH=6.5), flocculation, sedimentation and sand filtration. In the treatment with pre-oxidation and disinfection, DCF was partially removed, but the concentration of dissolved organic carbon (DOC) was unchanged and byproducts of DCF were observed. Chlorine dioxide was more effective than chorine in oxidizing DCF. In conclusion, the identification of DCF and DOC in finished water indicated the incomplete elimination of DCF through conventional treatments. Nevertheless, conventional drinking water treatment followed by GAC filtration was effective in removing DCF (⩾99.7%). In the oxidation with chlorine, three byproducts were tentatively identified, corresponding to a hydroxylation, aromatic substitution of one hydrogen by chlorine and a decarboxylation/hydroxylation. Oxidation with chlorine dioxide resulted in only one byproduct (hydroxylation).
Collapse
Affiliation(s)
- Eliane Sloboda Rigobello
- Department of Chemistry and Molecular Physics, Institute of Chemistry of São Carlos, University of São Paulo, 13566-570 São Carlos, Brazil.
| | | | | | | |
Collapse
|
21
|
Cappelini LTD, Cordeiro D, Brondi SHG, Prieto KR, Vieira EM. Development of methodology for determination of pesticides residue in water by SPE/HPLC/DAD. Environ Technol 2012; 33:2299-2304. [PMID: 23393971 DOI: 10.1080/09593330.2012.665494] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To boost crop yield, sugarcane growers are using increasing amounts of pesticides to combat insects and weeds. But residues of these compounds can pollute water resources, such as lakes, rivers and aquifers. The present paper reports the results of a study of water samples from the Feijão River, which is the source of drinking water for the city of São Carlos, São Paulo, Brazil. The samples were evaluated for the presence of four leading pesticides--ametryn, atrazine, diuron and fipronil--used on sugarcane, the dominant culture in the region. The samples were obtained from three points along the river: the headwaters, along the middle course of the river and just before the municipal water intake station. The pesticides were extracted from the water samples by solid-phase extraction (SPE) and then analyzed by liquid chromatography with diode array detection (LC-DAD). The analytical method was validated by traditional methods, obtaining recovery values between 90 and 95%, with precision deviations inferior to 2.56%, correlation coefficients above 0.99 and detection and quantification limits varying from 0.02 to 0.05 mg L(-1) and 0.07 to 0.17 mg L(-1), respectively. No presence of residues of the pesticides was detected in the samples, considering the detection limits of the method employed.
Collapse
|
22
|
Cordeiro D, da Rocha GC, Onaka EM, Cappelini LTD, Pereira RDO, Pacces VHP, Vieira EM. HPLC DETERMINATION OF HORMONES IN SÃO JOSÉ DO RIO PRETO MUNICIPAL DAM, SÃO PAULO, BRAZIL. J LIQ CHROMATOGR R T 2012. [DOI: 10.1080/10826076.2011.637275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Daniela Cordeiro
- a Department of Analytical Chemistry , São Carlos Institute of Chemistry, University of São Paulo , São Paulo , Brazil
| | - Guilherme Casoni da Rocha
- b Graduate Program in Environmental Engineering Sciences, São Carlos School of Engineering, University of São Paulo , São Paulo , Brazil
| | | | - Luciana Teresa Dias Cappelini
- a Department of Analytical Chemistry , São Carlos Institute of Chemistry, University of São Paulo , São Paulo , Brazil
| | - Renata de Oliveira Pereira
- d Department of Hydraulics and Sanitation , São Carlos School of Engineering, University of São Paulo , São Paulo , Brazil
| | - Vitor Hugo Polisél Pacces
- a Department of Analytical Chemistry , São Carlos Institute of Chemistry, University of São Paulo , São Paulo , Brazil
| | - Eny Maria Vieira
- a Department of Analytical Chemistry , São Carlos Institute of Chemistry, University of São Paulo , São Paulo , Brazil
| |
Collapse
|
23
|
Novelli A, Vieira BH, Cordeiro D, Cappelini LTD, Vieira EM, Espíndola ELG. Lethal effects of abamectin on the aquatic organisms Daphnia similis, Chironomus xanthus and Danio rerio. Chemosphere 2012; 86:36-40. [PMID: 21955349 DOI: 10.1016/j.chemosphere.2011.08.047] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 08/24/2011] [Accepted: 08/28/2011] [Indexed: 05/31/2023]
Abstract
Abamectin is used as an acaricide and insecticide for fruits, vegetables and ornamental plants, as well as a parasiticide for animals. One of the major problems of applying pesticides to crops is the likelihood of contaminating aquatic ecosystems by drift or runoff. Therefore, toxicity tests in the laboratory are important tools to predict the effects of chemical substances in aquatic ecosystems. The aim of this study was to assess the potential hazards of abamectin to the freshwater biota and consequently the possible losses of ecological services in contaminated water bodies. For this purpose, we identified the toxicity of abamectin on daphnids, insects and fish. Abamectin was highly toxic, with an EC(50) 48 h for Daphnia similis of 5.1 ng L(-1), LC(50) 96 h for Chironomus xanthus of 2.67 μg L(-1) and LC(50) 48 h for Danio rerio of 33 μg L(-1).
Collapse
Affiliation(s)
- Andréa Novelli
- Núcleo de Estudos em Ecossistemas Aquáticos, Programa de Pós-Graduação em Ciências da Engenharia Ambiental, Universidade de São Paulo, Av. Trabalhador SanCarlense, 400, 13.560-970 São Carlos, SP, Brazil.
| | | | | | | | | | | |
Collapse
|
24
|
Rigobello ES, Dantas ADB, Di Bernardo L, Vieira EM. Influence of the apparent molecular size of aquatic humic substances on colour removal by coagulation and filtration. Environ Technol 2011; 33:1767-1777. [PMID: 22439564 DOI: 10.1080/09593330.2011.555423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This study aims to verify the influence of the apparent molecular size of aquatic humic substances (AHSs) on the effectiveness of coagulation with aluminium sulphate and ferric chloride. Coagulation-filtration tests using the jar test and bench-scale sand filters were carried out with water samples having a true colour of approximately 100 Hazen units and prepared with AHSs of different molecular sizes. Stability diagrams are presented showing regions of > or = 90% and > or = 95% apparent colour removal delineated for each water sample using plots of total metal ion concentration (Al3+ and Fe3+) versus coagulation pH. To achieve the same degree of colour removal, the water samples with smaller apparent molecular sizes and a higher percentage of fulvic acids required higher dosages of both aluminium sulphate and ferric chloride.
Collapse
|
25
|
|
26
|
Abstract
A simple and efficient new procedure is presented for the analysis of diflubenzuron (DFB) accumulation in tilapia (Oreochromis niloticus) filet. A liquid-chromatography (LC) with diode array detection method with C(18) solid-phase extraction clean-up was employed. The methods exhibit no significant matrix effect as verified by the recovery efficiency. The limits of detection and quantification were 32 microg/kg and 110 microg/kg, respectively. LC-tandem mass spectrometry analysis confirmed the presence of DFB in filet of tilapia exposed to this pesticide. The method was successfully applied for the analyses of fish captured in three different fee-fishing farms during two seasons and for the analyses of fish from an experimental pond (subjected to Dimilin exposition) and depuration tank during different time intervals.
Collapse
Affiliation(s)
- Ricardo Luvizotto-Santos
- Programa de Pós-graduação em Ciências da Engenharia Ambiental, Escola de Engenharia de São Carlos, Universidade de São Paulo. Av. Trabalhador São Carlense, 400, C.P. 780, CEP 13560-970, São Carlos, SP, Brazil.
| | | | | |
Collapse
|
27
|
Sloboda E, Vieira EM, Dantas ADB, Di Bernardo L. Influência das características das substâncias húmicas aquáticas na eficiência da coagulação com o cloreto férrico. QUIM NOVA 2009. [DOI: 10.1590/s0100-40422009000400028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
28
|
Abstract
BACKGROUND Lidocaine has been used for spinal anaesthesia since 1948, seemingly without causing concern until recently. This study aimed at evaluating the feasibility of performing anorectal surgery in outpatient settings with low hypobaric lidocaine doses. METHODS Three groups of 50 patients, physical status ASA I-II, undergoing anorectal surgical procedures in a prone jack-knife position, received 3 ml (18 mg), 4 ml (24 mg) or 5 ml (30 mg) of hypobaric 0.6% lidocaine. Sensory and motor blockade, time until first urination, ambulation, complications and the need for analgesics were evaluated. Patients were followed until the third post-operative day. RESULTS Adequate sensory block was obtained in all patients. Blockade was significantly lower in Group 1. The level at 15 min was L(1) with 3 ml, T(11) with 4 ml and T(10) with 5 ml. Only 24 patients presented a moderate motor block. There was no hypotension, nausea or vomiting, urine retention, transitory neurological symptom or post-dural puncture headache in any patients. There was one case of bradycardia with 4 ml and two cases with 5 ml. CONCLUSIONS Hypobaric lidocaine predominantly provided a sensory block after injection in the prone jack-knife position. The smallest dose (3 ml=18 mg) provides sufficient analgesia with a lesser dispersion and a shorter duration. The major advantages were haemodynamic stability and a high degree of patient satisfaction.
Collapse
Affiliation(s)
- L E Imbelloni
- Institute for Regional Anaesthesia, São José do Rio Preto, SP, Brazil.
| | | | | | | |
Collapse
|
29
|
Affiliation(s)
- Sandra Zago Falone
- a Institute of Chemistry at São Carlos, University of São Paulo , São Carlos (SP), Brazil
| | - Eny Maria Vieira
- a Institute of Chemistry at São Carlos, University of São Paulo , São Carlos (SP), Brazil
| | - Francis I. Onuska
- b National Water Research Institute, Environmental Canada, Aquatic Ecosystem Protection Branch , Burlington, Ontario, Canada
| |
Collapse
|
30
|
|
31
|
Abstract
The palm tree Euterpe edulis is endemic to the Atlantic Forest, where it constitutes an economically important forest product. The often unplanned and illegal harvesting of palm hearts has led to drastic reductions in the populations of E. edulis in many areas where this palm used to be the dominant understorey tree species. We investigated the effects of harvesting on seed and seedling predation of E. edulis. We tested the predictions of the dominance-predation hypothesis according to which predator satiation leads to an inverse relationship between the amount of predation and the dominance of a tree species. During two consecutive years, seeds were set experimentally on an unharvested (> 250 adult palms/ha) and a neighboring harvested site (few, if any, adult palms) located in the Atlantic Forest of SE Brazil. Seedling mortality was studied at both sites for a six-month period in each of two consecutive years. Seed predation caused by rodents was higher at the harvested site, while insects caused more damage to seeds placed at the unharvested site. The proportion of seeds preyed upon by rodents varied annually, while insect predation did not. Seedling mortality did not differ between harvested and unharvested sites. The dominance-predation hypothesis was confirmed for generalist rodent seed predators, but not for specialist insect predators. This result shows that density-dependent mortality, not only at the individual level but also at the population-level scale, is a function of the class of predators and their types of foraging behavior.
Collapse
Affiliation(s)
- M A Pizo
- Departamento de Botânica, Universidade Estadual Paulista, UNESP, CP 199, CEP 13506-900, Rio Claro, SP, Brazil.
| | | |
Collapse
|
32
|
|
33
|
Campos SXD, Vieira EM. Estudo da degradação do herbicida ácido 2,4- diclorofenoxiacético (2,4-D) por meio da radiação gama do cobalto-60 em solução aquosa contendo ácido húmico. QUIM NOVA 2002. [DOI: 10.1590/s0100-40422002000400003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
34
|
Dos Santos MR, Vieira EM, Reis Lima M. Molecular diagnosis and counseling in a family presenting compound heterozygosity for autosomal recessive limb-girdle muscular dystrophy. GENETIC COUNSELING (GENEVA, SWITZERLAND) 2002; 12:223-9. [PMID: 11693784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The present report concerns two patients, male and female siblings, manifesting a different degree of severity for the same autosomal recessive limb-girdle muscular dystrophy. The index case (male sib) carried the clinical diagnosis of Becker muscular dystrophy at the time when the sister, with a much milder presentation, first sought counseling and prenatal diagnosis for a pregnancy already in course. Molecular and immunocytochemical tests then available favoured the diagnosis of an autosomal recessive myopathy, but did not enable exclusion of a dystrophinopathy The couple was counseled accordingly, although prenatal diagnosis could not be offered. Both patients were later found to carry one gamma- and two alpha-sarcoglycan gene mutations, one of the latter being new This raised a counseling dilemma: depending on which combination was the disease-causing genotype, there would be a minimal or a significant 25% risk to offspring. We describe the studies carried out and emphasise the importance of differential diagnosis and extensive molecular characterisation in this group of disorders, so as to enable correct genetic counseling and prenatal diagnosis.
Collapse
Affiliation(s)
- M R Dos Santos
- Molecular Genetics Unit, Counseling Clinic, Instituto de Genética Médica Jacinto de Magalhães, Porto, Portugal.
| | | | | |
Collapse
|
35
|
Vieira EM, Villela WV, Réa MF, Fernandes ME, de Franco E, Ribeiro G. [Key aspects of sexual behavior and safer sex practice among men in the city of São Paulo]. CAD SAUDE PUBLICA 2000; 16:997-1009. [PMID: 11175523 DOI: 10.1590/s0102-311x2000000400018] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Heterosexual relations currently constitute the predominant route of HIV transmission to women in Brazil. Few studies have approached male sexual behavior taking women into account. This study included 597 men ages 21 to 50 in São Paulo city and explored several aspects pertaining to safer sex, such as sexual partners, knowledge of sexually transmitted diseases (STDs)/AIDS, risk perception, and protective practices aimed at AIDS prevention. The results showed that, similar to other countries, the proportion of men who have sex with men is low (5%), that younger men adopt more protective behavior than older men regarding multiple partners and condom use, that knowledge of AIDS is widespread (but that there is still a lack of knowledge concerning STDs in general), and that although risk perception increases protective behavior, presumption of the partner's behavior influences this perception, placing men and women in a vulnerable situation.
Collapse
Affiliation(s)
- E M Vieira
- Hospital das Clínicas, Departamento de Medicina Social, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP 14049-900, Brasil
| | | | | | | | | | | |
Collapse
|
36
|
Abstract
This paper analyzes the attitudes of low-income women towards abortion and contraception. A survey was conducted in 1992 with a total of 3,149 childbearing-age women living on the outskirts of the Greater Metropolitan São Paulo Area. The study focuses on a sub-sample of 583 women. Attitudes of sterilized and non-sterilized women are compared. Women, especially those sterilized, found the most important attribute of a contraceptive method to be its effectiveness. Women currently taking the pill were less likely than those sterilized to agree that sterilization was the best method because of its effectiveness. Sterilized women were less likely than non-sterilized women to trust the pill. Sterilized women were more likely than non-sterilized to have reported adverse effects from the pill. Most women found abortion unacceptable except in the case of risk to the woman's life. Women using more effective methods showed stronger negative attitudes towards abortion. The tendency to be sterilized while still young was associated with more negative attitudes towards abortion. Family planning activities in basic health care services should include individual counseling for contraceptive use.
Collapse
Affiliation(s)
- E M Vieira
- Departamento de Medicina Social, Faculdade de Medicina de Ribeirão Preto, Hospital das Clínicas, Av. dos Bandeirantes 3900, Ribeirão Preto, SP 14049-900, Brazil
| |
Collapse
|
37
|
Vieira EM, Prado AGSD, Landgraf MD, Rezende MODO. Estudo da adsorção/dessorção do ácido 2,4 diclorofenoxiacético (2,4d) em solo na ausência e presença de matéria orgânica. QUIM NOVA 1999. [DOI: 10.1590/s0100-40421999000300002] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
|
38
|
Abstract
This paper examines some problems involved in the provision of female sterilization procedures in Brazil, mainly those concerned with the ways in which this operation is offered. Female sterilization provision is analysed by reference to the broader institutional context and from the client's perspectives. These themes are discussed in the light of some recent survey findings. A survey was carried out between March and July, 1992 in two selected poor areas of São Paulo Metropolitan Region. 3149 women were asked about contraceptive use including 407 sterilized women under 40 years old who were also interviewed about their adaptation to sterilization. Further information was also obtained through in-depth interviews with 15 sterilized women who regretted the operation. The findings highlight a complex network of interests and misunderstandings which shape the nature of choice of female sterilization by Brazilian low income women.
Collapse
MESH Headings
- Adolescent
- Adult
- Brazil
- Cesarean Section/economics
- Cesarean Section/statistics & numerical data
- Contraception Behavior/ethnology
- Direct Service Costs/statistics & numerical data
- Ethics, Medical
- Family Planning Services/methods
- Family Planning Services/statistics & numerical data
- Female
- Health Education
- Health Knowledge, Attitudes, Practice
- Health Services Accessibility
- Hospitals, Private/statistics & numerical data
- Hospitals, Public/statistics & numerical data
- Humans
- Insurance, Health/statistics & numerical data
- Middle Aged
- Motivation
- Poverty
- Pregnancy
- Sampling Studies
- Social Control, Formal
- Sterilization, Reproductive/economics
- Sterilization, Reproductive/legislation & jurisprudence
- Sterilization, Reproductive/psychology
- Sterilization, Reproductive/statistics & numerical data
- Superstitions
- Uncompensated Care/statistics & numerical data
Collapse
Affiliation(s)
- E M Vieira
- Institute of Population Studies, University of Exeter, England
| | | |
Collapse
|
39
|
Abstract
A survey carried out in the metropolitan region of S. Paulo between March and July, 1992, shows that of 3,149 low income women aged from 15 to 49, 21.8% had been sterilized. Of those women living in marital union 29.2% had been sterilized and 34.4% were on the pill. Four hundred and seven sterilized women under 40 years old who underwent sterilization at least one year before the interview were asked about their reproductive life, the previous use of contraception, the decision-making process regarding their sterilization, the access to the operation and their adaptation after the operation. The results show that access to sterilization is obtained by means of payment to the doctor even in the case of low income women. The lack of regulation of sterilization and the insufficient provision of family planning methods by the Women's Health Comprehensive Programme are probably encouraging young women to opt for sterilization. The provision of sterilization presents ethical problems. The study shows that the irreversibility of the procedure was not understood by almost 40% of the women sterilized. The acceptability of sterilization as a result of a complex social strategy involving various sectors of Brazilian society associated with the need for the control of fertility felt by women are discussed. The need to regulate and control the procedure is discussed. The regulation of sterilization would create fairer access to sterilization and could safeguard the ethical aspects of its choice.
Collapse
Affiliation(s)
- E M Vieira
- Secretaria de Estado da Saúde de São Paulo, Brasil
| |
Collapse
|
40
|
Martin-Neto L, Vieira EM, Sposito G. Mechanism of atrazine sorption by humic Acid: a spectroscopic study. Environ Sci Technol 1994; 28:1867-1873. [PMID: 22175927 DOI: 10.1021/es00060a017] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
|
41
|
Vieira EM. Occurrence and prevalence of bot flies, Metacuterebra apicalis (Diptera: Cuterebridae), in rodents of cerrado from central Brazil. J Parasitol 1993; 79:792-5. [PMID: 8410558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The occurrence and prevalence of Metacuterebra apicalis (Diptera: Cuterebridae) in natural populations of Oryzomys subflavus, Bolomys lasiurus, and Thalpomys cerradensis (Rodentia: Muridae) from August 1990 to July 1992 in the cerrado, a common savanna-like vegetation type of central Brazil, are reported. An increase in bot infection in the 3 rodent species between October 1991 and July 1992 without correlation to precipitation was detected. The prevalence was lower than in neotropical forest formations. Mean intensity was 1.3 bots (range 1-2) for T. cerradensis and 1 bot for B. lasiurus and O. subflavus. This is the first record of T. cerradensis as host of bot flies.
Collapse
Affiliation(s)
- E M Vieira
- Departamento de Zoologia, Universidade Estadual de Campinas, Brazil
| |
Collapse
|
42
|
Gillett MP, Vieira EM, Dimenstein R. The phospholipase activities present in preheparin mouse plasma are inhibited by antiserum to hepatic lipase. Int J Biochem 1993; 25:449-53. [PMID: 8462732 DOI: 10.1016/0020-711x(93)90639-v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
1. Preheparin plasma from mice, but not rats or man, contains high levels of phospholipase A and lysophospholipase activities which are distinct from lecithin:cholesterol acyltransferase (LCAT). 2. Neither the phospholipase A nor the lysophospholipase activities in preheparin plasma are inhibited by incubation in the presence of protamine sulphate or high salt concentrations. 3. When mouse plasma is incubated in the presence of an antiserum specific for rat hepatic triacylglycerol lipase (HTGL), the phospholipase activities are abolished. 4. These observations suggest that the phospholipase activities are attributable to the action of HTGL, which, in the mouse appears to be a freely circulating enzyme, whereas for other species this enzyme only appears in the blood following administration of heparin.
Collapse
Affiliation(s)
- M P Gillett
- Departamento de Bioquímica, Universidade Federal de Pernambuco, Recife-PE, Brazil
| | | | | |
Collapse
|
43
|
|