Heavy Metal In Soil
Mostrando 13-24 de 96 artigos, teses e dissertações.
-
13. Solubility of Heavy Metals/Metalloid on Multi-Metal Contaminated Soil Samples from a Gold Ore Processing Area: Effects of Humic Substances
ABSTRACT Bioavailability of heavy metals at contaminated sites is largely controlled by the physicochemical properties of the environmental media such as dissolved organic matter, hydroxides and clay colloids, pH, soil cation exchange capacity and oxidation-reduction potential. The aim of this study was to investigate soil pH and heavy metal solubility effec
Rev. Bras. Ciênc. Solo. Publicado em: 30/06/2016
-
14. Modelling of Lead Migration from Electronic Waste to Mixtures of Kaolinite, Iron Oxides and Organic Matter
Improper disposal of electronic waste in the environment facilitates migration of heavy metals, especially lead, into the soil and can contribute to the bioavailability of this species. Based on a simplex-centroid mixture experimental design, small-scale tests were performed for incubation of printed circuit boards (PCBs) in mixtures containing organic matte
J. Braz. Chem. Soc.. Publicado em: 2016-05
-
15. Characterization of the core microbiota of the drainage and surrounding soil of a Brazilian copper mine
Abstract The core microbiota of a neutral mine drainage and the surrounding high heavy metal content soil at a Brazilian copper mine were characterized by 16S rDNA pyrosequencing. The core microbiota of the drainage was dominated by the generalist genus Meiothermus. The soil samples contained a more heterogeneous bacterial community, with the presence of bot
Genet. Mol. Biol.. Publicado em: 03/11/2015
-
16. Composting sewage sludge with green waste from tree pruning
Sewage sludge (SS) has been widely used as organic fertilizer. However, its continuous use can cause imbalances in soil fertility as well as soil-water-plant system contamination. The study aimed to evaluate possible improvements in the chemical and microbiological characteristics of domestic SS, with low heavy metal contents and pathogens, through the compo
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-10
-
17. Health risk assessment of heavy metals in vegetables grown around battery production area
Battery production is one of the main sources of heavy metals that present great harm to human health even in low concentrations. Chromium (Cr), Cadmium (Cd) and Lead (Pb) were measured in edible portions of vegetables and soils around a battery production area in China, and the potential health risk of heavy metal contamination to the local population via v
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-04
-
18. Use of non-hyperaccumulator plant species for the phytoextraction of heavy metals using chelating agents
Soil contamination by heavy metals is a challenge faced by many countries, and engineering technologies to solve this problem are expensive and can cause negative impacts on the environment. One way to minimise the levels of heavy metals in the soil is to use plants that can absorb and accumulate heavy metals into harvestable parts, a process called phytoext
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-08
-
19. Monitoramento ambiental de zinco em produtos agrícolas / Environmental monitoring of zinc in agricultural products
Large areas have been affected by heavy metals in concentrations which may pose environmental hazard. Due to increased industrial activity and highly technical agriculture, it becomes critical to monitor the levels of heavy metals in soil, because plants behave as a mechanism for transfer of contaminants from soil to higher levels of the food chain. Ingestio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/10/2012
-
20. Disponibilidade de Cd em Latossolos e sua transferência e toxicidade para as culturas de alface, arroz e feijão / Cadmium availability in Oxisols and its transfer and toxicity to lettuce, rice and bean crops
O cádmio (Cd) é um elemento potencialmente tóxico para as plantas, animais e homens. O Cd é particularmente perigoso devido à sua mobilidade relativamente alta em solos e transferência para as plantas. Além disso, plantas que crescem em solos contaminados podem acumular Cd nos tecidos comestíveis em grandes quantidades sem qualquer sintoma visível d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
-
21. Levels and distribution coefficients of trace elements in latosol fertilized with pig slurry / Teores e coeficientes de distribuição de elementos-traço em Latossolo adubado com dejetos líquidos de suínos
O crescimento acelerado da suinocultura no Brasil tem gerado acúmulo de dejetos nas propriedades, preocupando os órgãos ambientais, pois deposições indiscriminadas desses dejetos podem resultar em excessos de alguns elementos-traço no solo e sua possível transferência para plantas e águas subterrâneas. O uso dos dejetos líquidos de suínos (DLS) c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2011
-
22. Ecophysiological and anatomical changes due to uptake and accumulation of heavy metal in Brachiaria decumbens
The growth and developmental characteristics of grasses and their high biodiversity make such plants suitable for remediation of areas contaminated by heavy metals. Nevertheless, heavy metal toxic effect on the plants may cause alteration in their metabolic pathways, such as photosynthesis, respiration, and growth, modifying plant anatomy. This work aimed to
Scientia Agricola. Publicado em: 2011-10
-
23. Phytotoxicity of cadmium and barium and derivation of critical limits in soils / Fitotoxidade de cádmio e bário e derivação de lilites críticos em solos
Soil pollution by heavy metals caused by anthropogenic activities is a problem in many countries. Cadmium (Cd) is one of the most hazardous elements due to its relatively high mobility in soils and transfer to plants. The main human exposure pathway to Cd is through the vegetable consumption and depends on the exposure scenario. Thus, defining a critical lim
Publicado em: 2011
-
24. Establishment of recommendations and parameters for use of urban waste compost in agriculture in the State of Sao Paulo - Brazil.
The organic matter present in urban waste (45 to 60% of total dry mass), after being stabilized in the form of compost, is recommended for application in agricultural soils, since it improves its physical and chemical properties and benefits the soil biological processes. Also, the urban waste compost has been economically viable for application in agricultu
INTERNATIONAL ORBIT CONFERENCE. Publicado em: 2011