| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
|
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 |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 1 | |
| 1. |  | MEDEIROS, R. L. S.; SOUZA, V. C. de; BARBOSA NETO, M. A.; ARAÚJO, L. de; BARBOSA, A. de S.; MEDEIROS, R. L. S. de. Estrutura da regeneração natural de Anadenanthera colubrina em fragmento de brejo de altitude em Bananeiras, PB. Pesquisa Florestal Brasileira, Colombo, v. 36, n. 86, p. 95-101, abr./jun. 2016.| Biblioteca(s): Embrapa Florestas. |
|    |
| Registros recuperados : 1 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
