Literatura científica selecionada sobre o tema "Contamination sols et légumes"
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Artigos de revistas sobre o assunto "Contamination sols et légumes"
Wognin, Affou Séraphin, Mohamed Baguy Ouattara, Brice Judicaël Assi-Clair e Rose Koffi-Nevry. "Evaluation des niveaux de contamination bactériologique de la laitue selon les sites de production et de vente dans les sites de maraîchage d’Abidjan et zone-périurbaine". International Journal of Biological and Chemical Sciences 16, n.º 4 (31 de outubro de 2022): 1580–92. http://dx.doi.org/10.4314/ijbcs.v16i4.18.
Texto completo da fonteGueye, Papa Sam, Babacar Labou, Mamadou Diatte e Karamoko Diarra. "La mauvaise pratique phytosanitaire, principale source de contamination du chou au Sénégal". International Journal of Biological and Chemical Sciences 14, n.º 2 (12 de maio de 2020): 539–54. http://dx.doi.org/10.4314/ijbcs.v14i2.19.
Texto completo da fonteAssogba, Komlan, Sikirou Rachidatou, Adrien Boko, Charlotte Adje, Victoire Ahle, Raymond Vodouhe, Assa Ayémou, Enoch Achigan e Prudent Anihouvi. "Pratiques culturales et teneur en éléments anti nutritionnels (nitrates et pesticides) du Solanum macrocarpum au sud du Bénin". African Journal of Food, Agriculture, Nutrition and Development 7, n.º 15 (7 de julho de 2007): 01–21. http://dx.doi.org/10.18697/ajfand.15.ipgri2-3.
Texto completo da fonteJublin, Matthieu. "Alerte à la contamination des fruits et légumes". Alternatives Économiques N° 445, n.º 4 (24 de abril de 2024): 68–69. http://dx.doi.org/10.3917/ae.445.0068.
Texto completo da fonteDiop, Tidiane, Abdoulaye Diarra, Mouhamadou Abdoulaye Diallo, Mame Mor Dione e Abdoulaye Diop. "Impact d’une décharge urbaine sur la contamination métallique des sols : cas de la décharge de Mbeubeuss (Dakar)". International Journal of Biological and Chemical Sciences 16, n.º 6 (12 de março de 2023): 2992–3002. http://dx.doi.org/10.4314/ijbcs.v16i6.41.
Texto completo da fonteSimard, R. R., e S. Beauchemin. "Relation entre la richesse du sol en phosphore et la concentration en phosphore de l'eau de drainage dans deux agro-écosystèmes". Revue des sciences de l'eau 15 (12 de abril de 2005): 109–20. http://dx.doi.org/10.7202/705489ar.
Texto completo da fonteRoy, M., e D. Couillard. "Mobilité des métaux et risque de contamination des eaux lors de la valorisation sylvicole des boues de station d'épuration municipales au Québec : une revue". Revue des sciences de l'eau 10, n.º 4 (12 de abril de 2005): 507–25. http://dx.doi.org/10.7202/705291ar.
Texto completo da fonteCourchesne, François, Jean-Pierre Hallé e Marie-Claude Turmel. "Bilans élémentaires holocènes et altération des minéraux dans trois sols forestiers du Québec méridional". Géographie physique et Quaternaire 56, n.º 1 (14 de julho de 2004): 5–17. http://dx.doi.org/10.7202/008601ar.
Texto completo da fonteSaab, Hamid Bou, Nadine Nassif, Antione G. El Samrani, Rosette Daoud, Samir Medawar e Naim Ouaïni. "Suivi de la qualité bactériologique des eaux de surface (rivière Nahr Ibrahim, Liban)". Revue des sciences de l'eau 20, n.º 4 (21 de janeiro de 2008): 341–52. http://dx.doi.org/10.7202/016909ar.
Texto completo da fonteYe, Lambiénou, Désiré Jean Pascal Lompo, Aboubakar Sako e Hassan Bismarck Nacro. "Evaluation of trace metal content in soils subjected to inputs of solid urban wastes". International Journal of Biological and Chemical Sciences 14, n.º 9 (25 de março de 2021): 3361–71. http://dx.doi.org/10.4314/ijbcs.v14i9.31.
Texto completo da fonteTeses / dissertações sobre o assunto "Contamination sols et légumes"
Diop, Amadou. "Diagnostic des pratiques d'utilisation et quantification des pesticides dans la zone des Niayes de Dakar (Sénégal)". Phd thesis, Université du Littoral Côte d'Opale, 2013. http://tel.archives-ouvertes.fr/tel-00959895.
Texto completo da fonteMbodji, Mor. "Etude des impacts environnementaux et sanitaires des déchets d’équipements électriques et électroniques (DEEE) au Sénégal : cas de la ville de Dakar". Electronic Thesis or Diss., Lyon, 2021. http://www.theses.fr/2021LYSE1290.
Texto completo da fonteWaste electrical and electronic equipment (WEEE) is particularly problematic around the world. The aim of this thesis was to assess the potentially harmful effects of waste electrical and electronic equipment (WEEE) on the dispersion of metals in the environment and their fate to human health in Dakar, Senegal. Studies first focused on the determination of metals in the soils of four WEEE recycling sites in Dakar (Mbeubeuss, Mermoz Pikine and Reubeuss) by LIBS and portable X-ray fluorescence techniques. The results of this work showed that all the sites studied were contaminated by elements such as Pb, Cr, Fe, Mn and Zn in comparison with a control site. The distribution of metals is highly dependent on the site and therefore on the recycling activity. The potential contamination of the population through the food chain was assessed by analyzing vegetables produced near the largest WEEE waste dump (Mbeubeuss). Speciation by sequential extraction of the elements Sb, Pb, Sr, Cr, Cu Mn and Zn in market garden soils showed that the elements were mainly present in the residual fraction. This approach has shown that the metals are not mobile and not very bioavailable to plants. The contamination of metallic elements in two batches of vegetables produced from two distinct market gardening areas near Mbeubeuss and the evaluation of the potential health risk associated with the consumption of these products were studied. The results obtained from the first batch showed the contents of Cu, Cr, Mn, Zn and Fe led to risk indices. For the 2nd batch of vegetables (closer to Mbeubeuss) the concentrations of Cr, Zn and Pb are higher with a risk linked to the presence of Cr. The results of this work led to the conclusion that there is a potential health hazard for consumers of vegetables linked to the Cr element, only if it is present as CrVI
Bekmirzaev, Gulom. "Relations eau et cultures de légumes : effet des sols salins et conditions de sècheresse sur la croissance, composition minérale et photosynthèse". Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10010/document.
Texto completo da fonteConventional techniques used to control the soil salinization process - soil leaching or fertilization enhancing - contribute highly to soil and aquifers contamination; on the other hand, the use of salt tolerant species will be very useful to the plants, but does not solve the problem of soil or groundwater contamination. Hence, the only way to control the salinization process to maintain the sustainability of landscapes and agricultural fields is to combat the salinization problems with environmentally safe and clean techniques. One of these new techniques is the use of salt removing species. In order to study the potential capacity to remove soil salts, two horticultural species Portulaca oleracea and Tetragonia tetragonioides, and the salt sensitive crop lettuce (Lactuca Sativa L) were evaluated for their efficiency to remove salts from sandy soil. Plants were analysed relatively to total growth and mineral composition of the leaves and soil. According to the results, it was seen that T. tetragonioides is the best salt removing species and complementary, it has other benefits, which are as follows: 1) high biomass production; 2) several harvests; 3) high content of minerals; 4) horticultural importance; 5) easy multiplication; 6) easy crop management; 7) tolerance to drought conditions; 8) soil erosion control. P. oleracea is a high drought tolerant species, followed by T. tetragonioides. As concluding remarks, it was shown that this new technique to control salinity is a powerful and environmental clean tool to maintain the sustainability of the landscape and of the irrigated areas
Denys, Sébastien. "Prédiction de la phytodisponibilité de deux radionucléides (63 NI et 99 TC) dans les sols". Vandoeuvre-les-Nancy, INPL, 2001. http://www.theses.fr/2001INPL575N.
Texto completo da fonteLétondor, Clarisse. "Etude des mécanismes histologiques et physiologiques du transfert de la chlordécone (insecticide organochlore) dans les vegetaux". Thesis, Toulouse, INPT, 2014. http://www.theses.fr/2014INPT0008/document.
Texto completo da fonteChlordecone (CLD) is an organochlorine insecticide mainly used in French West Indies to struggle against banana weevil (Cosmopolites sordidus). Its low degradability into soils and its spreading in catchment basins cause a sustainable contamination of agricultural soils and surrounding ecosystems. This leads to a human exposure risk, by food consumption of contaminated vegetables, and to an environmental risk by transfer of CLD in food chains. Main hazardous vegetables for human health are root-vegetables that are directly in contact of soil but also other vegetables because CLD residues are found in aerial parts of plant, leaves and shoots. The environmental risk seems to be the biomagnification of contamination in trophic chains due partly by consumption of contaminated plants. This work focused on the CLD soil-plant transfer, on the one hand in tubers of edible-roots for knowing the health risk and on the other hand in grasses for environmental risk. The CLD lipophilicity plays a major role in its transfer to plants. CLD exhibits a certain affinity for lipophilic tissues particularly for the suberised periderm of tubers and the xylem cell walls that are thickened by lignin. In addition, transfer depends on plant architecture, physiology and organ histology. Two ways of CLD plant contamination were highlighted: roots absorption and adsorption onto tuber periderm. These mechanisms are followed by CLD translocation towards internal tissues of tuber by diffusion and to above-ground parts of the plant within the transpiration stream occurring in vascular xylem vessels. For tubers, we distinguished between the contamination brought by roots absorption and the one brought by peridermic adsorption. In radish, the trans-peridermic diffusion was showed as the major way of contamination. A risk analysis mainly based on plant morphology and tissue histology set up during tuberization process was realized. For grasses, CLD transfer ability to aerial part of plant was studied in several usual gramineae (yam, sweet popato, dasheen). Plant contamination potential is mainly determined by its physiological traits (metabolism) and its life cycle (perenniality). These features could drive the choice of some gramineae to perform CLD phytoremediation
Guérin, Julie. "Diagnostic agroenvironnemental de la fertilisation phosphatée des cultures maraîchères en sols organiques". Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26520/26520.pdf.
Texto completo da fonteGelly, Romain. "Potentiel des isotopes stables de Cu et Zn comme traceurs de l'origine et des redistributions des métaux dans les sols". Thesis, Aix-Marseille, 2019. http://theses.univ-amu.fr.lama.univ-amu.fr/190620_GELLY_768ohv852uofd165ssnfb371qq_TH.pdf.
Texto completo da fonteIn this work, we studied the origin and the fate of Cu, Pb and Zn brought to soils by atmospheric emissions from an active smelter and a historical one. To investigate the redistribution of these anthropogenic Cu, Zn and Pb in the surrounding soils and vegetation, we used stable metal isotopes of Zn, Cu and Pb associated with total and extracted metal concentrations, Zn speciation (by XAS measurements) and magnetic susceptibility.By coupling these techniques, we demonstrated the presence in soils of Pb and Zn originating from the smelters. Anthropogenic metals were concentrated in soil surface horizons and for Zn reached up to 15 and 35 times the geochemical background at resp. the active and historical metallurgical sites. We identified the presence of anthropogenic Pb and Cu in the deepest soil horizons which migrated either as solid (Pb) or solubilized (Cu) forms. Contribution of anthropogenic Pb to total Pb was estimated to be at least 72% at depth in the soils nearby the Escalette former smelter. Anthropogenic Zn was found, at both sites, to be immobilized in soil surface horizons due to its precipitation as Zn-LDH or bonding with Fe. We showed that anthropogenic Pb and Zn solubility was low and that it contrasted with Cu mobility. Therefore, anthropogenic metals appeared to be poorly or not bioavailable to the nearby vegetation. In addition, we highlighted the specific behavior of Mediterranean plants regarding Cu isotopes fractionation, as we measured isotopic enrichment (i.e. in 65Cu) in aerial parts, not observed, so far, in the literature
Parsons, Christopher. "Distribution et mobilité de l'arsenic dans les sols : effets de cycles redox successifs". Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00637484.
Texto completo da fonteOndo, Jean Aubin. "Vulnérabilité des sols maraîchers du Gabon (région de Libreville) : acidification et mobilité des éléments métalliques". Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10097/document.
Texto completo da fonteUrbanization is growing rapidly worldwide, especially in Africa. Feed this urban population requires to double agricultural production before 2030. One of solution seems to be urban agriculture. Gabon, like other African countries, is experiencing a boom of urban agriculture, particularly in Libreville. But no concrete study of the impact of urban agriculture on the bio-physico-chemical properties and behavior of metals in soils has yet been carried out in the country. In this context, the objective of this work was to study the impact of urban gardening on soil properties, and the presence of metals in soils and crops.The urban gardening is practiced under cover or in open air and some factors hinder its development (instruction level of gardeners, land insecurity, fertilizers, limited access to water ...). Soils in Libreville are sandy-loam or clay-sandy-loam. The content of metals is generally low and the risk of contamination in the food is limited. Soils cultivated for less than 10 years and soils cultivated under cover do not undergo a significant impact of agricultural practices. In contrast, soils cultivated in open air for at least 10 years are acidified, their fertility parameters and metal content decreasing significantly. The pH is correlated with the chemical speciation of metals and there is a good mobility of Mn, Pb and Zn in soils. Metal content in vegetables grown in Libreville was below the limits allowed by the FAO. Amaranth and sorrel accumulated many metals, especially in the leaves that are consumed parts. The simulation of the liming of agricultural soils cultivated in open air for at least 10 years with the PHREEQC software shows that stabilization to pH 6-7 would improve soils fertility. Some experiments in situ and in laboratory are needed to confirm these results and other mineral and/or organics inputs tests
Lahlah, Jasmina. "Résilience géochimique et microbienne d'un ferralsol associée à des alternances d'aération et d'apport de vinasse de rhumerie". Avignon, 2009. http://www.theses.fr/2009AVIG0618.
Texto completo da fonteThe spreading of liquid by-products of food industry enables their elimination and supplies the soil with nutrients for plants. Unfortunately, it simultaneously favours anoxia and anaerobic microbial activities that may lead to various geochemical changes, including mineral alterations/neo-formations and metal mobilizations. It also favours changes in microbial taxonomic and functional diversities. The soil resilience has not been checked until now. The goals of this work were therefore (i) to confirm already obtained results dealing with microbial and geochemical changes in anoxic conditions, (ii) to assess for microbial and geochemical resiliences after the return to oxic conditions, and (iii) to describe the survival of anaerobic microorganisms in oxic conditions. Incubations of slurries of a ferralsol of Reunion Island were performed with successively oxic and anoxic conditions, rum vinasse being supplied at the beginning of each of the anoxic periods. Measurements were performed at some dates to characterize the composition of the gaseous headspace of the flasks, the slurry solution (pH, organic and mineral compounds, including metal elements), solid phases (iron (Fe) and manganese (Mn) oxidation level, soil CEC) and microbial communities (fungal biomass, bacteria and archaea numbers, numbers of cultivable fermentative bacteria and Fe(III) reducers, bacteria molecular diversity). Under anoxic conditions, main biotransformations included fermentations, true acetogenesis, Fe(III) and Mn(IV) reductions, SO42- reduction and acetoclastic methanogenesis. They led to a great mobilization of Fe and Mn, as well as an increase in soil CEC. Bacteria and Archaea numbers increased during fermentations and methanogenesis, respectively, whereas fungal biomass remained constant during 28 days in anoxic conditions. Microbial molecular diversity was changed with the appearance of dominant peaks in CE-SSCP characterizations after 2 days of anoxia, but this diversity became more complex for longer anoxic periods. The return to oxic conditions induced the oxidative immobilization of Fe, the exchange of adsorbed Fe(II) with other metals (Ca, Mg, K, Na, Mn, Pb, Ni …) from which the mobility decreased suddenly. Mn(II) in solution and solid phases was not oxidised for 28 day oxic periods. The soil CEC remained higher than its initial value and Fe solid phases evolved to phases that differed from initial phases and phases at the end of the anoxic period. The fungal biomass transiently increased, whereas the bacteria number didn't vary and the archaea number slightly decreased for treatments in which methanogenesis previously enabled their growth. The bacteria molecular diversity was modified again with the appearance of peaks in CE-SSCP, some ones being already observed after the beginning of anoxic conditions. The persistence of some peaks that appeared in anoxic conditions and the definitive disappearance of other peaks in anoxic conditions suggest that microbial resilience was only partial even after 28 days in oxic conditions. A period in oxic conditions between 2 periods in anoxic conditions did neither affect the growth of bacteria, archaea and cultivable fermentative bacteria, nor the microbial fermentations and Fe(III) reduction during the second anoxic period
Livros sobre o assunto "Contamination sols et légumes"
Laurent, Claire. Contamination des sols: Transferts des sols ver les animaux. Les Ulis: EDP Science, 2005.
Encontre o texto completo da fonteLaurent, Claire. Contamination des sols: Transferts des sols vers les animaux. Les Ulis [France]: EDP Sciences, 2005.
Encontre o texto completo da fonteBossche, Hugues Vanden. Devenir du phosphore apporté sur les sols et risques de contamination des eaux de surface: Cas des boues de stations d'épuration. Rennes, France: Géosciences Rennes, UMR 6118, CNRS-Université de Rennes I, Campus de Beaulieu, 2002.
Encontre o texto completo da fonteFeidt, Cyril, François Laurent e Claire Laurent. Contamination des Sols: Transferts des Sols Vers les Animaux. EDP Sciences, 2021.
Encontre o texto completo da fonteCapítulos de livros sobre o assunto "Contamination sols et légumes"
"4. Aliments d’origine animale et polluants organiques et métalliques". In Contamination des sols, 81–94. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0260-9-007.
Texto completo da fonte"4. Aliments d’origine animale et polluants organiques et métalliques". In Contamination des sols, 81–94. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0260-9.c007.
Texto completo da fonte"Annexe 2 Absorption et distribution tissulaire des polluants organiques et métalliques". In Contamination des sols, 133–46. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0260-9-011.
Texto completo da fonte"Annexe 2 Absorption et distribution tissulaire des polluants organiques et métalliques". In Contamination des sols, 133–46. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0260-9.c011.
Texto completo da fonte"Annexe 5 Seuils nationaux et internationaux". In Contamination des sols, 207–10. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0260-9-014.
Texto completo da fonte"Annexe 5 Seuils nationaux et internationaux". In Contamination des sols, 207–10. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0260-9.c014.
Texto completo da fonte"4. Aliments d’origine végétale et éléments-traces". In Contamination des sols, 105–34. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0261-6-007.
Texto completo da fonte"4. Aliments d’origine végétale et éléments-traces". In Contamination des sols, 105–34. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0261-6.c007.
Texto completo da fonte"1. Rappels sur les polluants organiques et métalliques". In Contamination des sols, 9–22. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0260-9-004.
Texto completo da fonte"1. Rappels sur les polluants organiques et métalliques". In Contamination des sols, 9–22. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0260-9.c004.
Texto completo da fonte