A5073290026- Nanoparticles: synthesis and applications
- Heavy metals in environment
- Environmental Toxicology and Ecotoxicology
- Pesticide and Herbicide Environmental Studies
- Microplastics and Plastic Pollution
- Study of Mite Species
- Toxic Organic Pollutants Impact
- Heavy Metal Exposure and Toxicity
- Insect and Pesticide Research
- Pharmaceutical and Antibiotic Environmental Impacts
- Pesticide Residue Analysis and Safety
- Graphene and Nanomaterials Applications
- Electrochemical Analysis and Applications
- Geochemistry and Elemental Analysis
- Recycling and Waste Management Techniques
- Environmental remediation with nanomaterials
- Healthcare and Environmental Waste Management
- Insect-Plant Interactions and Control
- Membrane Separation Technologies
- Marine Biology and Environmental Chemistry
- Bird parasitology and diseases
- Advanced Nanomaterials in Catalysis
- Nematode management and characterization studies
- Municipal Solid Waste Management
- Odor and Emission Control Technologies
Environment and Climate Change Canada
2013-2025
University of Saskatchewan
2010-2012
The lack of an efficient and standardized method to disperse soil particles quantitatively subsample the nanoparticulate fraction for characterization analyses is hindering progress in assessing fate toxicity metallic engineered nanomaterials environment. This study investigates various extraction extract preparation techniques their ability remove Ag from a field amended with biosolids contaminated silver nanoparticles (AgNPs), while presenting suitable suspension quantitative...
There is an increasing interest to use single particle-inductively coupled plasma mass spectroscopy (SP-ICPMS) help quantify exposure engineered nanoparticles, and their transformation products, released into the environment. Hindering of this analytical technique for environmental samples presence high levels dissolved analyte which impedes resolution particle signal from dissolved. While sample dilution often necessary achieve low concentrations SP-ICPMS analysis, reduce occurrence matrix...
Nanomaterials are increasingly used in a wide range of products, leading to growing concern their environmental fate. In order understand the fate and effects silver nanoparticles soil environment, suite toxicity tests including: plant growth with Elymus lanceolatus (northern wheatgrass) Trifolium pratense (red clover); collembolan survival reproduction (Folsomia candida); earthworm avoidance, (Eisenia andrei) was conducted. The effect (AgNP) compared ionic (as AgNO3) two agricultural field...
The effect of metal nanoparticles on the anaerobic digestion sludge and bacterial community are still not well-understood, both improvements inhibitions have been reported. This study investigated impact 2, 10, 30 mg/g TS silver copper oxide (AgNPs CuONPs) mesophilic structure. reactors were monitored for changes in tCOD, sCOD, TS, VS, biogas generation, cell viability. Also, relative abundance taxonomic distribution communities analyzed at phylum genus levels, including genera involved...
The use of engineered silver nanoparticles (AgNPs) is widespread, with expected release to the terrestrial environment through application biosolids onto agricultural lands. toxicity AgNPs and nitrate (AgNO3 ; as ionic Ag+ ) plant (Elymus lanceolatus Trifolium pratense) soil invertebrate (Eisenia andrei Folsomia candida) species was assessed using Ag-amended applied a natural sandy loam soil. Bioavailable in samples estimated an ion-exchange technique KNO3 extracts, whereas exposure...
Abstract Few soil invertebrate species are available for the toxic assessment of soils from boreal or other northern ecozones, yet these cover majority Canada's landmass as well significant portions Eurasia. Oppia nitens (C.L. Koch) is an herbivorous and fungivorous oribatid mite found in throughout Holarctic regions, including Canada. Soil tests using O. were performed 15 different forest types horizons to investigate test variability adult survival reproduction. Adult (86.1 ± 1.1%) was...
The ability to assess the toxic potential of soil contamination within boreal regions is currently limited test species representative arable lands. This study evaluated use six plant (Pinus banksiana, Picea glauca, mariana, Populus tremuloides, Calamagrostis Canadensis, and Solidago canadensis) four invertebrate (Dendrodrilus rubidus, Folsomia nivalis, Proisotoma minuta, Oppia nitens) compared their performance a suite standard agronomic using site soils impacted by petroleum hydrocarbon...
Microplastic particles in arable soil are expected to impact the environment and potentially human health. The application of municipal biosolids (MBs) agricultural land presents a further dilemma that act as fertilizer for crop growth, disposal pathway wastewater treatment plants. They also direct path emerging contaminants, such microplastics enter terrestrial environment. Reliable methods needed identify quantify microplastics, found soils determine how being cycled In this study, we...
The use of neonicotinoids in agriculture is a critical environmental protection issue. Although there has been considerable research on pollinator exposure and aquatic toxicological effects, few studies have investigated the chronic impacts soil-dwelling species. Given application into soil systems, potential for risk to invertebrates. toxicity 2 commercial formulations containing active ingredients (a.i.) thiamethoxam (Actara® 240SC) or clothianidin (Titan™) was using 3 invertebrate...
Abstract Survival and reproduction soil toxicity tests for a new mite test species, Oppia nitens, have recently been developed boreal ecosystems; however, the require 28 to 35 d. Avoidance potential allow rapid preliminary screening assessments of soils. The objective this investigation was determine relevance avoidance with oribatid O. nitens as short in lower‐tier environmental risk assessment. We assessed effects properties chemicals on behavior well minimum time required obtain...
Environmental contextBiosolid-amended soils are likely sinks for manufactured silver nanoparticles, the environmental toxicity of which is believed to be related release and accumulation Ag+ ions. This study demonstrates how an ion exchange technique can applied soil extracts provide measurements at low, environmentally relevant levels. The a valuable addition existing analytical methods tracking behaviour Ag nanoparticles ions in terrestrial environment. AbstractThe lack speciation exposure...
There is increasing interest in the environmental fate and effects of engineered nanomaterials due to their ubiquitous use consumer products. In particular, given mounting evidence that dramatic transformations can occur a nanomaterial throughout its product lifecycle, appropriateness using pristine testing being questioned. Using combination transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), photoelectron (XPS), inductively coupled plasma-mass spectrometry...
The fate, toxicity and bioaccumulation of copper oxide nanoparticles (nCuO) was investigated in soil, with without biosolids amendment, through chronic exposures using the earthworm, Eisenia andrei, collembolan, Folsomia candida. effects sulphate (CuSO4) were included so as to compare behavior nCuO a readily soluble counterpart. fate evaluated characterization dissolved nano-particulate fractions (via single particle ICP-MS) well extractable Cu2+ throughout duration select tests. Neither Cu...