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101.
The impact of zero-valent iron nanoparticles upon soil microbial communities is context dependent 总被引:3,自引:1,他引:2
Mark Pawlett Karl Ritz Robert A. Dorey Sophie Rocks Jeremy Ramsden Jim A. Harris 《Environmental science and pollution research international》2013,20(2):1041-1049
Nanosized zero-valent iron (nZVI) is an effective land remediation tool, but there remains little information regarding its impact upon and interactions with the soil microbial community. nZVI stabilised with sodium carboxymethyl cellulose was applied to soils of three contrasting textures and organic matter contents to determine impacts on soil microbial biomass, phenotypic (phospholipid fatty acid (PLFA)), and functional (multiple substrate-induced respiration (MSIR)) profiles. The nZVI significantly reduced microbial biomass by 29 % but only where soil was amended with 5 % straw. Effects of nZVI on MSIR profiles were only evident in the clay soils and were independent of organic matter content. PLFA profiling indicated that the soil microbial community structure in sandy soils were apparently the most, and clay soils the least, vulnerable to nZVI suggesting a protective effect imparted by clays. Evidence of nZVI bactericidal effects on Gram-negative bacteria and a potential reduction of arbuscular mycorrhizal fungi are presented. Data imply that the impact of nZVI on soil microbial communities is dependent on organic matter content and soil mineral type. Thereby, evaluations of nZVI toxicity on soil microbial communities should consider context. The reduction of AM fungi following nZVI application may have implications for land remediation. 相似文献
102.
R. G. Botelho M. L. Rossi L. A. Maranho R. A. Olinda V. L. Tornisielo 《Environmental science and pollution research international》2013,20(7):4382-4395
A long-term study was conducted to evaluate Piracicaba River water (São Paulo state, Brazil) using different methodologies and organisms. During 1 year (February 2011 to January 2012), water samples were collected monthly at six different locations and exposed under laboratory conditions to the microcrustaceans Ceriodaphnia dubia and Ceriodaphnia silvestrii for 7 days and to the fish Danio rerio for 4 days to evaluate effects on reproduction and on gill morphology, respectively. Physical–chemical parameters of the water were also measured. Physical–chemical characteristics demonstrated decreasing water quality from upstream to downstream of the river. Effects on the reproduction of C. dubia and C. silvestrii were observed in 3 months (February and March 2011 and January 2012) and occurred in samples collected close to industrialized cities like Americana and Piracicaba. Evaluation of the gills showed normal function of the organ during all months, except in February, September, and October for some locations. 相似文献
103.
Mathilde Lefebvre Fabienne Dufernez Ange-Line Bruel Marie Gonzales Bernard Aral Judith Saint-Onge Nadège Gigot Julie Desir Caroline Daelemans Frédérique Jossic Sébastien Schmitt Raphaele Mangione Fanny Pelluard Catherine Vincent-Delorme Jean-Marc Labaune Nicole Bigi Dominique D'Olne Anne-Lise Delezoide Annick Toutain Sophie Blesson Valérie Cormier-Daire Julien Thevenon Salima El Chehadeh Alice Masurel-Paulet Nicole Joyé Claude Vibert-Guigue Luc Rigonnot Thierry Rousseau Pierre Vabres Philippe Hervé Antonin Lamazière Jean-Baptiste Rivière Laurence Faivre Nicole Laurent Christel Thauvin-Robinet 《黑龙江环境通报》2015,35(7):675-684
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Sophie Hallstedt Henrik Ny Karl-Henrik Robèrt Göran Broman 《Journal of Cleaner Production》2010,18(8):703-712
This article aims to explore a new approach to assess company decision systems regarding sustainability-related communication and decision support between senior management and product development levels. The assessment approach was developed in theory and its applicability was directly tested in action research in two small and medium-sized companies and two large companies. The results were validated against experiences made by two management consultancies. Our study indicates that successful companies should: (i) integrate sustainability into business goals and plans, backed up by suitable (ii) internal incentives and disincentives and (iii) decision support tools. Our study also indicates that the new assessment approach can be used as a template to assess the current state of sustainability integration in company decision systems. 相似文献
107.
Mehrez Samaali Michael D. Moran Vronique S. Bouchet Radenko Pavlovic Sophie Cousineau Mourad Sassi 《Atmospheric environment (Oxford, England : 1994)》2009,43(32):4873-4885
The influence of chemical initial conditions and chemical lateral boundary conditions (CLBCs) on long-term regional air quality model simulations was investigated using outputs from an annual simulation of the year 2002 on a North American domain. This simulation was carried out using the AURAMS regional air quality model. It was subdivided into three multi-month segments with two overlap periods (May 15–30 and September 1–30) to allow the segments to be run in parallel. For this approach to work, model predictions had to match very closely by the end of the two-week and four-week overlap periods. The time required for the values of daily domain-average surface PM2.5 concentration to match for the two simulation segments associated with each of the two overlap periods was four and six days, respectively. For individual locations within the model domain, however, the required spin-up period was as much as nine days, considerably longer than the 2–4-day spin-up period usually assumed in the literature. For ozone, on the other hand, the daily domain-average surface ozone concentration values did not converge for either overlap period. A zero-gradient CLBC had been used for all run segments and species. When a time-invariant CLBC for ozone was used instead, the daily domain-average surface ozone concentration values behaved more realistically and did converge after fewer than three days. A similar improvement was also obtained for individual locations, but with spin-up periods of up to nine days. Model chemical spin-up time thus seems to be dependent on the species considered, the time required for the influence of the inflow boundaries to reach all locations within the domain, and the impact of local emissions sources. These results suggest the use of a spin-up period of longer than one week for a large (continental) domain and long-term simulation of PM2.5 and O3 rather than the 2–4 days commonly assumed in the literature. 相似文献
108.
Cécile Courdier John Boudjarane Valérie Malan Christine Muti Brian Sperelakis-Beedham Sylvie Odent Sylvie Jaillard Chloé Quelin Cédric Le Caignec Olivier Patat Charlotte Dubucs Sophie Julia Caroline Schluth-Bolard Carole Goumy Sylvia Redon Jean-Baptiste Gaillard Minh Tuan Huynh Céline Dupont Anne-Claude Tabet Guillaume Cogan François Vialard Rodolphe Dard Guillaume Jedraszak Florence Jobic Mathilde Lefebvre Geneviève Quenum Saori Inai Mélanie Rama Fanny Sauvestre Frédéric Coatleven Julie Thomas Caroline Rooryck 《黑龙江环境通报》2023,43(6):734-745
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