Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados ArchiMer (2) Autor Frere, L. (2) Huvet, Arnaud (2) Lambert, C. (2) Paul-pont, I. (2) Rinnert, Emmanuel (2) Soudant, P. (2) Bihannic, Isabelle (1) Jaffre, J (1) Moreau, Julien (1) Petton, Sebastien (1) Mais... Palavra-chave Automating (1) Coastal ecosystem (1) Dispersal particle modelling (1) Environmental monitoring (1) Hydrodynamic (1) Microplastic (1) Microplastics (1) Morphology (1) Raman micro-spectroscopy (1) Raman spectroscopy (1) Sediment (1) Surface seawater (1) Surface water (1) Mais... Tipo do documento Text (2) Ano 2017 (1) 2016 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Influence of environmental and anthropogenic factors on the composition, concentration and spatial distribution of microplastics: A case study of the Bay of Brest (Brittany, France) ArchiMer Frere, L.; Paul-pont, I.; Rinnert, Emmanuel; Petton, Sebastien; Jaffre, J; Bihannic, Isabelle; Soudant, P.; Lambert, C.; Huvet, Arnaud. The concentration and spatial distribution of microplastics in the Bay of Brest (Brittany, France) was investigated in two surveys. Surface water and sediment were sampled at nine locations in areas characterized by contrasting anthropic pressures, riverine influences or water mixing. Microplastics were categorized by their polymer type and size class. Microplastic contamination in surface water and sediment was dominated by polyethylene fragments (PE, 53–67%) followed by polypropylene (PP, 16–30%) and polystyrene (PS, 16–17%) microparticles. The presence of buoyant microplastics (PE, PP and PS) in sediment suggests the existence of physical and/or biological processes leading to vertical transfer of lightweight microplastics in the bay. In sediment (upper... Tipo: Text Palavras-chave: Microplastic; Coastal ecosystem; Surface water; Sediment; Raman spectroscopy; Hydrodynamic; Dispersal particle modelling. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00379/48994/51083.pdf A semi-automated Raman micro-spectroscopy method for morphological and chemical characterizations of microplastic litter ArchiMer Frere, L.; Paul-pont, I.; Moreau, Julien; Soudant, P.; Lambert, C.; Huvet, Arnaud; Rinnert, Emmanuel. Every step of microplastic analysis (collection, extraction and characterization) is time-consuming, representing an obstacle to the implementation of large scale monitoring. This study proposes a semi-automated Raman micro-spectroscopy method coupled to static image analysis that allows the screening of a large quantity of microplastic in a time-effective way with minimal machine operator intervention. The method was validated using 103 particles collected at the sea surface spiked with 7 standard plastics: morphological and chemical characterization of particles was performed in < 3 h. The method was then applied to a larger environmental sample (n = 962 particles). The identification rate was 75% and significantly decreased as a function of particle... Tipo: Text Palavras-chave: Microplastics; Raman micro-spectroscopy; Surface seawater; Morphology; Environmental monitoring; Automating. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00357/46802/46976.pdf Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco