15 research outputs found

    Agrot√≥xicos priorit√°rios n√£o abordados pela Portaria GM do Minist√©rio da Sa√ļde n¬ļ 888, de 2021, sobre padr√£o de potabilidade da √°gua no Brasil

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    The intense use of pesticides can be harmful to the environment and human health, being necessary to monitor the environmental concentrations of pesticides. The legislation on drinking water for human consumption is one of the guiding regulations about monitoring priority. Therefore, a systematic review was carried out to compile information on the contamination of surface water, groundwater, and treated water in Brazil. Thereby, we selected those pesticides which, although they are authorized for use and are among the topselling pesticides, are not regulated by GM Ordinance of the Ministry of Health (GM/MS) No. 888, of May 4, 2021. The databases used were PubMed, Scielo, Science Direct, Scopus, and Web of Science. Of the 122 pesticides in the market, 11 were selected. Analyses of environmental dynamics, concentration, and health effects were carried out. The Goss methodology and the Groundwater Ubiquity Score (GUS) index were used to estimate the risk of surface water and groundwater contamination, respectively. The concentrations found were compared with the values provided for in the guidelines adopted by international agencies, determining the Brazilian population‚Äôs margin of exposure (MOE) to the target pesticides. The results indicate a high probability of finding imidacloprid and hexazinone in the water, the prevalence of studies on surface waters, and the need to conduct additional studies as papers on some of the target pesticides were not found. It is concluded that the pesticides studied pose a low risk to human health, however, further studies are still required.O intenso uso de agrot√≥xicos pode ser prejudicial ao meio ambiente e √† sa√ļde humana, tornando necess√°rio o monitoramento de suas concentra√ß√Ķes ambientais. Como um dos dispositivos norteadores sobre a prioridade de monitoramento √© a legisla√ß√£o de √°gua pot√°vel para consumo humano, foi realizada uma revis√£o sistem√°tica da literatura com o objetivo de compilar informa√ß√Ķes sobre a contamina√ß√£o das √°guas superficiais, subterr√Ęneas e tratadas por agrot√≥xicos. Foram considerados os agrot√≥xicos mais vendidos em territ√≥rio brasileiro entre 2009 e 2019 e que possuem autoriza√ß√£o de uso, mas que n√£o s√£o regulamentados pela Portaria GM do Minist√©rio da Sa√ļde n¬ļ 888, de 4 de maio de 2021. Dos 122 agrot√≥xicos comercializados, 11 foram selecionados. Analisaram-se a din√Ęmica ambiental, concentra√ß√£o em √°guas e efeitos na sa√ļde humana. Na estimativa do risco de contamina√ß√£o das √°guas superficiais e subterr√Ęneas, empregou-se a metodologia Goss e o √≠ndice Groundwater Ubiquity Score (GUS), respectivamente. Uma compara√ß√£o cr√≠tica sobre as concentra√ß√Ķes encontradas e os valores-guia adotados por ag√™ncias internacionais foi realizada, determinando-se a margem de exposi√ß√£o da popula√ß√£o brasileira aos agrot√≥xicos. Os resultados do trabalho mostraram a maior probabilidade de que imidacloprido e hexazinona sejam encontrados em √°guas; a preval√™ncia de estudos realizados em √°guas superficiais; e a necessidade de que mais trabalhos sejam realizados, uma vez que n√£o foram encontrados artigos sobre alguns dos compostos-alvo. Conclui-se que os agrot√≥xicos estudados apresentam baixo risco √† sa√ļde, todavia se v√™ a necessidade de que mais estudos sejam desenvolvidos

    Ocorr√™ncia de chumbo, cromo e merc√ļrio em mananciais de abastecimento e em √°gua de consumo humano no Brasil

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    Devido ao iminente risco de contamina√ß√£o de mananciais de abastecimento por resposta √†s a√ß√Ķes antr√≥picas e considerando a toxicidade de metais pesados aos seres humanos, esse estudo teve o objetivo de avaliar a ocorr√™ncia de chumbo, cromo e merc√ļrio, em mananciais de abastecimento de √°gua e √°gua de consumo humano no Brasil. Para isso, foram utilizados dados secund√°rios de monitoramento de mananciais de abastecimento e √°guas tratadas obtidos por meio do Sistema de Informa√ß√£o de Vigil√Ęncia da Qualidade da √Āgua para Consumo Humano (SISAGUA). Foram obtidas estat√≠sticas descritivas da ocorr√™ncia de cada metal nas matrizes dos sistemas de abastecimento das diferentes macrorregi√Ķes brasileiras. Al√©m disso, foram estimados valores de refer√™ncia para a concentra√ß√£o dessas esp√©cies em mananciais de abastecimento e √°guas pot√°veis dos munic√≠pios brasileiros e comparados as legisla√ß√Ķes brasileiras. De maneira geral, verificou-se a manuten√ß√£o de conformidade das concentra√ß√Ķes dos metais avaliados nos mananciais de abastecimento e √°guas pot√°veis nas regi√Ķes brasileiras. No entanto, alguns munic√≠pios demonstraram concentra√ß√Ķes superiores aos limites estabelecidos, caracterizando risco √† sa√ļde da popula√ß√£o. No caso do merc√ļrio, tamb√©m se observou um alto percentual de munic√≠pios com concentra√ß√Ķes superiores ao limite estabelecido para mananciais superficiais de √°guas doces de classes 1 e 2

    Diurom e tebuconazol no Brasil:: Comercialização e ocorrência em águas

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    Pesticides are microcontaminants used in agriculture to control pests and weeds, which can contaminate water sources and cause damage to health and environment. Among these are diuron and tebuconazole, pesticides that are authorized to be used in crops of economic relevance in Brazil, such as soybeans, corn and, sugarcane. In this sense, the aim of this study was to carry out a literature review on the occurrence of diuron and tebuconazole in Brazilian waters and also evaluate the commercialization of these compounds in Brazilian states over the last few years. Diuron and tebuconazole were widely marketed in Brazil between 2009 and 2020, with the Southeast, Midwest and, South regions standing out. They have the potential for water contamination, as evidenced by the occurrence data reported in the literature, where for diuron the values ranged from 0.0032 őľg/L to 140 őľg/L and for tebuconazole from 0.003 őľg/L to 261.8 őľg/L in surface waters. For both, only one quantified data in surface water reported in the literature was above the MAV established by the water potability ordinance. The study also highlights the need for further studies on these compounds in Brazilian waters, especially in places close to agricultural areas, since the data reported in literature review cover a small number of municipalities.Os agrot√≥xicos s√£o microcontaminantes ambientais utilizados na agricultura para o controle de pragas e ervas daninhas, podendo contaminar mananciais de abastecimento e provocar danos √† sa√ļde e ao ambiente. Dentre esses, encontram-se o diurom e o tebuconazol, agrot√≥xicos com uso autorizado no Brasil em culturas de relev√Ęncia econ√īmica, como soja, milho e cana-de-a√ß√ļcar. Nesse sentido, o objetivo deste estudo foi realizar uma revis√£o de literatura sobre a ocorr√™ncia de diurom e tebuconazol em √°guas do Brasil, avaliando ainda a comercializa√ß√£o desses compostos nos estados brasileiros ao longo dos √ļltimos anos. Diurom e tebuconazol foram amplamente comercializados no Brasil entre os anos de 2009 e 2020, destacando-se as comercializa√ß√Ķes das regi√Ķes Sudeste, Centro-Oeste e Sul. Tais compostos apresentam potencial de contamina√ß√£o das √°guas, sendo corroborado pelos dados de ocorr√™ncia reportados na literatura, que para o diurom os valores variaram de 0,0032 a 140 őľg/L e para o tebuconazol de 0,003 a 261,8 őľg/L em √°guas superficiais. Para ambos, apenas um dado foi quantificado em √°guas superficiais acima do VMP de acordo com a portaria de potabilidade da √°gua. O estudo evidencia ainda a necessidade de maiores estudos acerca desses compostos em √°guas brasileiras, principalmente em locais pr√≥ximos de √°reas agr√≠colas, uma vez que os dados reportados na literatura abrangem um n√ļmero pequeno de munic√≠pios

    Remo√ß√£o de f√°rmacos e desreguladores end√≥crinos em esta√ß√Ķes de tratamento de esgoto: revis√£o da literatura

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    Remo√ß√£o de f√°rmacos e desreguladores end√≥crinos em esta√ß√Ķes de tratamento de esgoto: revis√£o da literatura

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    O monitoramento ambiental dos chamados microcontaminantes ou micropoluentes vem ganhando grande interesse da comunidade cient√≠fica desde os anos 1970. Nesse grupo de contaminantes est√£o inclu√≠dos f√°rmacos de diversas classes, produtos de limpeza e higiene pessoal, subst√Ęncias aplicadas na produ√ß√£o de pl√°sticos e resinas, pesticidas, horm√īnios naturais e seus subprodutos, entre outros compostos. A principal via de contamina√ß√£o do meio ambiente com f√°rmacos e desreguladores end√≥crinos (DE) √© o lan√ßamento de esgotos in natura e tratado. Nesse contexto, este artigo compila dados de ocorr√™ncia de f√°rmacos e DE no afluente e efluente de esta√ß√Ķes de tratamento de esgoto (ETE), discute os mecanismos envolvidos na sua remo√ß√£o em ETE e faz uma an√°lise comparativa da remo√ß√£o de tais compostos em diferentes sistemas de tratament

    Removal of pharmaceuticals and endocrine disrupters in sewage treatment plants : literature review.

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    O monitoramento ambiental dos chamados microcontaminantes ou micropoluentes vem ganhando grande interesse da comunidade cient√≠fica desde os anos 1970. Nesse grupo de contaminantes est√£o inclu√≠dos f√°rmacos de diversas classes, produtos de limpeza e higiene pessoal, subst√Ęncias aplicadas na produ√ß√£o de pl√°sticos e resinas, pesticidas, horm√īnios naturais e seus subprodutos, entre outros compostos. A principal via de contamina√ß√£o do meio ambiente com f√°rmacos e desreguladores end√≥crinos (DE) √© o lan√ßamento de esgotos in natura e tratado. Nesse contexto, este artigo compila dados de ocorr√™ncia de f√°rmacos e DE no afluente e efluente de esta√ß√Ķes de tratamento de esgoto (ETE), discute os mecanismos envolvidos na sua remo√ß√£o em ETE e faz uma an√°lise comparativa da remo√ß√£o de tais compostos em diferentes sistemas de tratamento.The environmental monitoring of the so-called micropollutants has gained great interest since the 1970s. In this group of compounds are included several classes of pharmaceuticals, cleaning and personal care products, substances applied in plastics and resins, pesticides, natural hormones and their byproducts, among others. The main route of contamination of the environment with pharmaceuticals and endocrine disrupting compounds (EDC) is through the discharge of raw and treated sewage. Thus, this paper summarizes data on the occurrence of pharmaceuticals and EDC in raw and treated sewage, provides information regarding the mechanisms involved in their removal and compares their removal in different treatment processes

    Alternatives to odor and corrosion control in sanitary sewerage systems and treatment plants

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    <p></p><p>ABSTRACT This paper aims to consolidating the main characteristics, advantages and disadvantages of available methods in technical-scientific community to odor and corrosion control in sanitary sewerage systems and treatment plants, taking along an innovative approach on preventive solutions related to sewage systems design and operation with addition of chemicals or liquid phase aeration. The main beliefs of each technique are presented as well as the main guidelines for alternatives design. In addition, guidelines are given for corrective solutions design of covers and exhaust of potentially odorous sources, as well as a brief discussion of processes currently available in the technical-scientific community to the treatment of odorant odorous and corrosive gases.</p><p></p

    Occurrence of Pharmaceuticals and Endocrine Disrupting Compounds in Brazilian Water and the Risks They May Represent to Human Health

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    The risks of pharmaceuticals and endocrine disrupting compounds (P&amp;EDC) to the environment and human health are a current topic of interest. Hundreds of P&amp;EDC may reach the environment, hence, there is a need to rank the level of concern of human exposure to these compounds. Thus, this work aimed at setting a priority list of P&amp;EDC in Brazil, by studying their occurrence in raw and drinking water, calculating health guideline values (GV), and estimating the risks of population exposure to water intake. Data on the Brazilian pharmaceutical market as well as published data of the monitoring of Brazilian natural and drinking water have been collected by means of an exhaustive literature review. Furthermore, many foreign data were also collected to enable a comparison of the values found in Brazilian studies. A list of 55 P&amp;EDC that have the potential to be found in Brazilian water is proposed, and for 41 of these a risk assessment was performed by estimating their margin of exposure (ME), by considering their occurrence in drinking water, and guideline values estimated from reported acceptable daily intake (ADI) data. For seven compounds the risk was deemed high (three estrogens and four anti-inflammatories), whereas for another seven compounds, it was regarded as an &lsquo;alert&rsquo; situation. Although such risk analysis is conservative, since it has been calculated based on the highest reported P&amp;EDC concentration in drinking water, it highlights the need to enhance their monitoring in Brazil to strengthen the database and support decision makers. An analysis of the occurrence of antimicrobial resistance agents (antibiotics, resistant bacteria, and resistance genes) in surface waters was also carried out and confirmed that such agents are present in water sources throughout Brazil, which deserves the attention of policy makers and health agents to prevent dissemination of antimicrobial resistance through water use
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