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154.
Hg transfer from contaminated soils to plants and animals 总被引:1,自引:0,他引:1
S. M. Rodrigues B. Henriques A. T. Reis A. C. Duarte E. Pereira P. F. A. M. R?mkens 《Environmental Chemistry Letters》2012,10(1):61-67
Understanding the transfer of mercury (Hg) from soil to crops is crucial due to Hg toxicity and Hg occurrence in terrestrial
systems. Previous research has shown that available Hg in soils contributes to plant Hg levels. Plant Hg concentrations are
related to soil conditions and plant characteristics. Mechanistic models describing such soil–plant interactions are however
difficult to quantify. Here we performed a field study in agricultural, mining and industrial areas in Portugal to evaluate
potential food chain risks. The uptake of Hg by Italian ryegrass, ryegrass, orchard grass, collard greens and rye was measured
to calculate daily intakes (DI) of Hg for cows and sheep grazing. A total of 136 soil samples and 129 plant samples were analysed.
Results show that total Hg concentrations ranged from 0.01 to 98 mg kg−1 in soils; 0.01–5.4 mg kg−1 in shoots and 0.01–42 mg kg−1 in roots. Calculated DI ranged from 0.18 to 132 mg d−1 for cows, and from 0.028 to 23 mg d−1 for sheep. In 27 grassland sites, daily intakes exceeded the acceptable daily intake of both cows and sheep in view of food
safety considering Hg in animal kidneys evidencing potential risks to human health. The transfer of Hg from soil to crops
was described using empirical Freundlich-type functions. For ryegrass, orchard grass and collard greens, the soil-to-root
or soil-to-shoot transfer of Hg appeared to be controlled by the total soil Hg concentration and levels of Alox and Feox. Empirical functions allowed us to obtain realistic estimates of Hg levels in crops and can be used as an alternative to
mechanistic models when evaluating food chain risks of Hg contamination in agricultural soils. 相似文献
155.
This paper describes an analytical solution for turning and milling stability that includes process damping effects. Comparisons between the new analytical solution, time-domain simulation, and experiment are provided. The velocity-dependent process damping model applied in the analysis relies on a single coefficient similar to the specific cutting force approach to modeling cutting force. The process damping coefficient is identified experimentally using a flexure-based machining setup for a selected tool-workpiece pair (carbide insert-AISI 1018 steel). The effects of tool wear and cutting edge relief angle are also evaluated. It is shown that a smaller relief angle or higher wear results in increased process damping and improved stability at low spindle speeds. 相似文献
156.
Silva Lídia Gaudêncio Ribeiro Costa Elizângela Pinheiro Starling Maria Clara Vieira Martins dos Santos Azevedo Taíza Bottrel Sue Ellen Costa Pereira Renata Oliveira Sanson Ananda Lima Afonso Robson José Cassia Franco Amorim Camila C. 《Environmental science and pollution research international》2021,28(19):24067-24078
Environmental Science and Pollution Research - The goal of this work was to evaluate the performance of the LED irradiated photo-Fenton process on the removal of (i) estrogenic activity and (ii)... 相似文献
157.
Bernardino Murilo Martins Alves Paulo Roger Lopes de Santo Fernanda Benedet Niemeyer Júlia Carina Leal Rafael Marques Pereira 《Environmental science and pollution research international》2021,28(22):27655-27665
Environmental Science and Pollution Research - Imidacloprid is one of the most commercialized insecticides in agriculture in the world, with a broad spectrum of action. However, little is known... 相似文献
158.
Rios Camilla Oliveira Siqueira-Silva Advanio Inácio Pereira Eduardo Gusmão 《Environmental science and pollution research international》2021,28(12):14797-14811
Environmental Science and Pollution Research - The revegetation of areas degraded by iron ore mining is a difficult challenge mainly due to water availability and impoverished metal-rich... 相似文献
159.
Testolin Renan C. Feuzer-Matos Ana Júlia Cotelle Sylvie Adani Fabrizio Janke Leandro Poyer-Radetski Gabriel Pereira Antonio C. Ariente-Neto Rafael Somensi Cleder A. Radetski Claudemir M. 《Environmental science and pollution research international》2021,28(36):49642-49650
Environmental Science and Pollution Research - Recalcitrant dyes found in textile wastewater represent a threat for sustainable textile production due to their resistance to conventional... 相似文献
160.
Martins Amanda Weege S. Silveira Tony L. R. Remião Mariana H. Domingues William Borges Dellagostin Eduardo N. Junior Antônio Sergio Varela Corcini Carine D. Costa Patrícia G. Bianchini Adalto Somoza Gustavo M. Robaldo Ricardo B. Campos Vinicius Farias 《Environmental science and pollution research international》2021,28(46):65127-65139
Environmental Science and Pollution Research - Roundup Transorb® (RDT) is a glyphosate-based herbicide commonly used in agricultural practices worldwide. This herbicide exerts negative effects... 相似文献