Reference number : GC-2017-Q2-04267, amendment number : , agreement type : G, recipient legal name : Hale, Beverley (University of Guelph), recipient country : CA, recipient province : nan, recipient city : Ontario, recipient postal code : nan, program name english : Engage Grants for Universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Adding nanoengineered materials to brownfield soils for remediation would need to consider the_x000D_
environmental risks posed by these materials relative to the risks of the contaminant that is being remediated._x000D_
Nano Zero-Valent Iron Particles (nZVI) have been used as a soil remediation method for more than a decade to_x000D_
degrade or immobilize organic and inorganic soil contaminants, halogenated organic compounds, PAHs,_x000D_
pesticides and heavy metals. The limitation to its broader use in Ontario, is that there is little knowledge of the_x000D_
environmental impact of the use of nZVI on soil ecosystems. Due to the unique properties associated with_x000D_
nanoparticles and the application of nZVI to soil as a means of remediation, environmental risk assessments_x000D_
must be performed. However, there is potential for persistence in the environment of any formed or_x000D_
transformed material, bioaccumulation, and toxicity to microbes and organisms living in the soil could result._x000D_
So far, this is poorly characterized for nZVI in soils, the barrier to which is that high quality toxicity studies_x000D_
must report measured rather than nominal exposure concentrations, and methods for quantifying nZVI in_x000D_
complex media are not well established. There are a number of microscopic and spectroscopic methods that_x000D_
can detect nZVI, the bigger challenge is quantification (Shi et al., 2015). Once capacity for quantification are_x000D_
established, the effect on ecotoxicity of the various surfactants on commercially available forms of nZVI can be_x000D_
identified. The methodologies for measuring nZVI, to be applied in this study are Nuclear Magnetic Resonance_x000D_
(NMR), and the chemical redox probe indigo disulphonate (I2S). These will be used to measure NZVI in soil_x000D_
pore water, extracted from the experimental media by centrifugation. The benefit to Canada is that strategic_x000D_
risk assessments of nZVI toxicity to soil dwelling organisms specific to Canada have yet to be conducted. Soil_x000D_
organisms such as earthworms, plants, and invertebrates may be exposed to nZVI, and due to its small size,_x000D_
anaerobic bacteria in the soil may also be impacted significantly. Such investigation would allow Canada to_x000D_
adopt the lead position in this field and allow for informed decisions to be made concerning regulations, program purpose french : Adding nanoengineered materials to brownfield soils for remediation would need to consider the_x000D_
environmental risks posed by these materials relative to the risks of the contaminant that is being remediated._x000D_
Nano Zero-Valent Iron Particles (nZVI) have been used as a soil remediation method for more than a decade to_x000D_
degrade or immobilize organic and inorganic soil contaminants, halogenated organic compounds, PAHs,_x000D_
pesticides and heavy metals. The limitation to its broader use in Ontario, is that there is little knowledge of the_x000D_
environmental impact of the use of nZVI on soil ecosystems. Due to the unique properties associated with_x000D_
nanoparticles and the application of nZVI to soil as a means of remediation, environmental risk assessments_x000D_
must be performed. However, there is potential for persistence in the environment of any formed or_x000D_
transformed material, bioaccumulation, and toxicity to microbes and organisms living in the soil could result._x000D_
So far, this is poorly characterized for nZVI in soils, the barrier to which is that high quality toxicity studies_x000D_
must report measured rather than nominal exposure concentrations, and methods for quantifying nZVI in_x000D_
complex media are not well established. There are a number of microscopic and spectroscopic methods that_x000D_
can detect nZVI, the bigger challenge is quantification (Shi et al., 2015). Once capacity for quantification are_x000D_
established, the effect on ecotoxicity of the various surfactants on commercially available forms of nZVI can be_x000D_
identified. The methodologies for measuring nZVI, to be applied in this study are Nuclear Magnetic Resonance_x000D_
(NMR), and the chemical redox probe indigo disulphonate (I2S). These will be used to measure NZVI in soil_x000D_
pore water, extracted from the experimental media by centrifugation. The benefit to Canada is that strategic_x000D_
risk assessments of nZVI toxicity to soil dwelling organisms specific to Canada have yet to be conducted. Soil_x000D_
organisms such as earthworms, plants, and invertebrates may be exposed to nZVI, and due to its small size,_x000D_
anaerobic bacteria in the soil may also be impacted significantly. Such investigation would allow Canada to_x000D_
adopt the lead position in this field and allow for informed decisions to be made concerning regulations, agreement title english : Toxicity of NZVI to Soil-Dwelling Organisms: Measuring Dose in Soils, agreement title french : Toxicity of NZVI to Soil-Dwelling Organisms: Measuring Dose in Soils, agreement number : EGP, agreement value : 22180.0, agreement start date : 2017-09-20, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada