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43. | | MELO, F. de B.; CARDOSO, M. J. Manejo de solo. In: CARDOSO, M. J.; BASTOS, E. A.; ANDRADE JUNIOR, A. S. de; ATHAYDE SOBRINHO, C. (Ed.). Feijão-Caupi: o produtor pergunta, a Embrapa responde. Brasília, DF: Embrapa, 2017. p. 67-74. (Coleção 500 perguntas, 500 respostas). Biblioteca(s): Embrapa Meio-Norte. |
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47. | | CARDOSO, M. J.; ATHAYDE SOBRINHO, C. (ed.). O milho no Meio-Norte do Brasil: estratégias básicas do manejo. Teresina: Embrapa Meio-Norte, 2007. 384 p. il. Color. Autroes: Aderson Soares de Andrade Júnior, Braz Henrique Nunes Rodrigues, Candido Athayde Sobrinho, Delcimar Miguel da Silveira Júnior, Edgard Ferreira da Costa, Edson Alves Bastos, Francisco de Brito Melo, Gilson soares da Silva, Hélio... Biblioteca(s): Embrapa Agroindústria de Alimentos; Embrapa Cocais; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Milho e Sorgo; Embrapa Tabuleiros Costeiros; Embrapa Unidades Centrais. |
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48. | | CARDOSO, M. J.; RIBEIRO, V. Q. Milho e sorgo consorciados ao feijão-caupi para sistema agrícola familiar do Semi-Árido Piauiense. In: CONGRESSO NACIONAL DE MILHO E SORGO, 28.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA DO CARTUCHO, 4., 2010, Goiânia. Potencialidades, desafios e sustentabilidade: Resumos expandidos... Goiânia: ABMS, 2010. Trabalho publicado também no Livro de resumos do 28º CONGRESSO NACIONAL DE MILHO E SORGO; 4º SIMPÓSIO BRASILEIRO SOBRE A LAGARTA DO CARTUCHO, 2010, Goiânia. Biblioteca(s): Embrapa Meio-Norte. |
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Registro Completo
Biblioteca(s): |
Embrapa Instrumentação; Embrapa Meio Ambiente. |
Data corrente: |
13/01/2022 |
Data da última atualização: |
03/02/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CASTRO, V. L. S. S. de; JONSSON, C. M.; SILVA, M. S. G. M. e; CASTANHA, R. F.; VALLIM, J. H.; SILVA, L. A. G. da; OLIVEIRA, R. M. D. de; CORREA, D. S.; FERREIRA, M. D. |
Afiliação: |
VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; CLAUDIO MARTIN JONSSON, CNPMA; MARIANA SILVEIRA GUERRA MOURA E SILVA, CNPMA; RODRIGO FERNANDES CASTANHA, CNPMA; JOSE HENRIQUE VALLIM, CNPMA; LETÍCIA ALBERTI GALEGO DA SILVA; RAISSA MORET DUARTE DE OLIVEIRA, UFSCar; DANIEL SOUZA CORREA, CNPDIA; MARCOS DAVID FERREIRA, CNPDIA. |
Título: |
Estimates of AgNP toxicity thresholds in support of environmental safety policies. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Journal of Nanoparticle Research, v. 24, n. 1, article 24, 2022. |
ISSN: |
1572-896X |
DOI: |
https://doi.org/10.1007/s11051-021-05357-4 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Silver nanoparticles (AgNPs) currently possess widespread applications in many products. Although there is an increase in the evaluation of their potential environmental risks and toxicity, the data available on AgNP safety levels are limited. Studies on the ecotoxicological and environmental risks of AgNPs, then, are still a requirement. In the present study, AgNPs sized at 82.8 nm were synthetized with an aim to assess their effect on some organisms including algae, plants, microcrustaceans, cnidaria, nematodes, aquatic insects, earthworms, and fish embryos. In addition, some ecotoxicity data obtained from the literature were also used. The non-observed-effect concentration (NOEC) was then calculated for each organism using a log-logistic function. Additionally, the stability of AgNPs in contact with the culture media throughout the analyzed period and conditions employed was evaluated in order to ensure their availability for the organisms tested. The AgNPs remained stable, presenting a dispersion rate of less than 20%, except for the A. salina medium, which presented a dispersion of approximately 25% but did not display differences in AgNP size. The predicted no-effect concentration (PNEC) in the aquatic and sediment compartment was estimated to lie in a concentration range from 0.07 to 0.35 µg Lâ??1. A risk quotient (RQ) of 28.6 was derived for the NPs tested in relation to a maximum AgNP predicted environmental concentration (PEC) estimate. Since an RQ value superior to 1 indicates an occurrence of risk and, consequently, the need for management measures to be implemented, the present data, in conjunction with the expected increase in AgNP use, reinforce the importance of the establishment of AgNP safety levels that can contribute to AgNP risk assessment studies. MenosAbstract: Silver nanoparticles (AgNPs) currently possess widespread applications in many products. Although there is an increase in the evaluation of their potential environmental risks and toxicity, the data available on AgNP safety levels are limited. Studies on the ecotoxicological and environmental risks of AgNPs, then, are still a requirement. In the present study, AgNPs sized at 82.8 nm were synthetized with an aim to assess their effect on some organisms including algae, plants, microcrustaceans, cnidaria, nematodes, aquatic insects, earthworms, and fish embryos. In addition, some ecotoxicity data obtained from the literature were also used. The non-observed-effect concentration (NOEC) was then calculated for each organism using a log-logistic function. Additionally, the stability of AgNPs in contact with the culture media throughout the analyzed period and conditions employed was evaluated in order to ensure their availability for the organisms tested. The AgNPs remained stable, presenting a dispersion rate of less than 20%, except for the A. salina medium, which presented a dispersion of approximately 25% but did not display differences in AgNP size. The predicted no-effect concentration (PNEC) in the aquatic and sediment compartment was estimated to lie in a concentration range from 0.07 to 0.35 µg Lâ??1. A risk quotient (RQ) of 28.6 was derived for the NPs tested in relation to a maximum AgNP predicted environmental concentration (PEC) estimate. Since an RQ val... Mostrar Tudo |
Palavras-Chave: |
Nanopartículas de prata. |
Thesagro: |
Alga; Composto Químico; Crustáceo; Impacto Ambiental; Inseto; Nematóide; Planta; Toxidez. |
Thesaurus NAL: |
Ecotoxicology; Environmental impact; Nanomaterials; Nanoparticles; Risk assessment; Silver compounds. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 03020naa a2200421 a 4500 001 2139069 005 2023-02-03 008 2022 bl uuuu u00u1 u #d 022 $a1572-896X 024 7 $ahttps://doi.org/10.1007/s11051-021-05357-4$2DOI 100 1 $aCASTRO, V. L. S. S. de 245 $aEstimates of AgNP toxicity thresholds in support of environmental safety policies.$h[electronic resource] 260 $c2022 520 $aAbstract: Silver nanoparticles (AgNPs) currently possess widespread applications in many products. Although there is an increase in the evaluation of their potential environmental risks and toxicity, the data available on AgNP safety levels are limited. Studies on the ecotoxicological and environmental risks of AgNPs, then, are still a requirement. In the present study, AgNPs sized at 82.8 nm were synthetized with an aim to assess their effect on some organisms including algae, plants, microcrustaceans, cnidaria, nematodes, aquatic insects, earthworms, and fish embryos. In addition, some ecotoxicity data obtained from the literature were also used. The non-observed-effect concentration (NOEC) was then calculated for each organism using a log-logistic function. Additionally, the stability of AgNPs in contact with the culture media throughout the analyzed period and conditions employed was evaluated in order to ensure their availability for the organisms tested. The AgNPs remained stable, presenting a dispersion rate of less than 20%, except for the A. salina medium, which presented a dispersion of approximately 25% but did not display differences in AgNP size. The predicted no-effect concentration (PNEC) in the aquatic and sediment compartment was estimated to lie in a concentration range from 0.07 to 0.35 µg Lâ??1. A risk quotient (RQ) of 28.6 was derived for the NPs tested in relation to a maximum AgNP predicted environmental concentration (PEC) estimate. Since an RQ value superior to 1 indicates an occurrence of risk and, consequently, the need for management measures to be implemented, the present data, in conjunction with the expected increase in AgNP use, reinforce the importance of the establishment of AgNP safety levels that can contribute to AgNP risk assessment studies. 650 $aEcotoxicology 650 $aEnvironmental impact 650 $aNanomaterials 650 $aNanoparticles 650 $aRisk assessment 650 $aSilver compounds 650 $aAlga 650 $aComposto Químico 650 $aCrustáceo 650 $aImpacto Ambiental 650 $aInseto 650 $aNematóide 650 $aPlanta 650 $aToxidez 653 $aNanopartículas de prata 700 1 $aJONSSON, C. M. 700 1 $aSILVA, M. S. G. M. e 700 1 $aCASTANHA, R. F. 700 1 $aVALLIM, J. H. 700 1 $aSILVA, L. A. G. da 700 1 $aOLIVEIRA, R. M. D. de 700 1 $aCORREA, D. S. 700 1 $aFERREIRA, M. D. 773 $tJournal of Nanoparticle Research$gv. 24, n. 1, article 24, 2022.
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