A5049447543- Heavy metals in environment
- Nanoparticles: synthesis and applications
- Arsenic contamination and mitigation
- Heavy Metal Exposure and Toxicity
- Mercury impact and mitigation studies
- Geochemistry and Elemental Analysis
- Graphene and Nanomaterials Applications
- Geochemistry and Geologic Mapping
- Selenium in Biological Systems
- Mine drainage and remediation techniques
- Radioactive element chemistry and processing
- Toxic Organic Pollutants Impact
- Clay minerals and soil interactions
- Radioactivity and Radon Measurements
- Plant Micronutrient Interactions and Effects
- Environmental remediation with nanomaterials
- Microplastics and Plastic Pollution
- Soil Carbon and Nitrogen Dynamics
- Fullerene Chemistry and Applications
- Groundwater flow and contamination studies
- Per- and polyfluoroalkyl substances research
- Plant Stress Responses and Tolerance
- Trace Elements in Health
- Environmental Toxicology and Ecotoxicology
- Coal and Its By-products
Commonwealth Scientific and Industrial Research Organisation
2011-2025
CSIRO Land and Water
2015-2025
Health Sciences and Nutrition
2024
C4 Therapeutics (United States)
2022-2023
Gemalto (Israel)
2020
Norwegian Geological Survey
2019
University of Johannesburg
2019
University of Alabama at Birmingham
2018
TU Bergakademie Freiberg
2017-2018
Geological Survey of Ireland
2017
Over the last decade, nanoparticles have been used more frequently in industrial applications and consumer medical products, these of will likely continue to increase. Concerns about environmental fate effects materials stimulated studies predict concentrations air, water, soils determine threshold for their ecotoxicological on aquatic or terrestrial biota. Nanoparticles can be added directly fertilizers orplant protection products indirectly through application land wastewater treatment...
The solubility of Zn in fertilizers plays an important role the agronomic effectiveness fertilizer. On basis thermodynamics, zinc oxide (ZnO) nanoparticles (NPs) should dissolve faster and to a greater extent than bulk ZnO particles (equivalent spherical diameter >100 nm). These novel features NPs might be exploited improve efficiency fertilizers. In this study, we compared dissolution kinetics coated onto two selected granular macronutrient fertilizers, urea monoammonium phosphate (MAP)....
There is a paucity of information on the environmental fate cerium oxide nanoparticles (CeO2 NPs) for terrestrial systems that may be exposed to CeO2 NPs by application biosolids derived from wastewater treatment systems. Using ultrafiltration (UF), dissolution, and nonequilibrium retention (Kr) values citrate-coated (8 nm diameter) partitioning (Kd) dissolved CeIII CeIV were obtained in suspensions 16 soils with diversity physicochemical properties. Dissolution studied solutions was only...
Abstract The toxicity of As(V) and As(III) to two axenic topical freshwater microalgae, Chlorella sp. Monoraphidium arcuatum , was determined using 72‐h growth rate—inhibition bioassays. Both organisms were tolerant (72‐h concentration cause 50% inhibition rate [IC50], 25 15 mg As[III]/L, respectively). also with no effect on over 72 h at concentrations up 0.8 mg/L IC50 As[V]/L). more sensitive 0.25 An increase in phosphate the medium (0.15–1.5 PO 3‐ 4 /L) decreased toxicity, i.e., value for...
Soils are likely to be increasingly exposed nanoparticles due growing consumer use of nanoparticles. This has necessitated an investigation into the fate and bioavailability in natural soils. However, effect soil properties on these processes unknown. To find dominant that determine AgNP retention soils, nonequilibrium ( K r ) values polyvinylpyrrolidone (PVP) coated silver (AgNP) were obtained suspensions 16 soils having a wide range physical chemical properties. The dissolution was...
Summary The fractionation of stable copper ( C u) isotopes during uptake into plant roots and translocation to shoots can provide information on u acquisition mechanisms. Isotope 65 u/ 63 intact tissue speciation techniques X ‐ray absorption spectroscopy, XAS ) were used examine the uptake, in strategy I (tomato– S olanum lycopersicum II (oat – A vena sativa species. Plants grown controlled solution cultures, under varied iron F e) conditions, test whether stimulation e‐acquiring mechanisms...
Environmental context.Soils are the environmental compartment likely to be exposed most manufactured nanoparticles, but there is no method available at present assess their retention, which determines potential mobility and bioavailability. Optimisation application of a determine retention values for silver (Ag) cerium oxide (CeO2) nanoparticles in soils found many cases that they differed from partitioning bulk soluble counterparts. Wider this can assist comparing risk different with other...
Phosphorus (P) is an essential element for life, innate constituent of soil organic matter, and a major anthropogenic input to terrestrial ecosystems. The supply P living organisms strongly dependent on the dynamics P. However, fluxes through matter remain unclear because only minority (typically <30%) has been identified as recognizable biomolecules low molecular weight (e.g., inositol hexakisphosphates). Here, we use (31)P nuclear magnetic resonance spectroscopy determine speciation in...
Manufactured silver nanoparticles (AgNPs) are one of the most commonly used nanomaterials in consumer goods and consequently their concentrations wastewater hence treatment plants predicted to increase. We investigated fate AgNPs sludge that was subjected aerobic anaerobic impact on microbial processes communities. The initial identification carried out using transmission electron microscopy (TEM) with energy dispersive X-ray (EDX) analysis. solid phase speciation influent then examined...
Zinc oxide (ZnO) nanoparticles may provide a more soluble and plant available source of Zn in fertilizers due to their greater reactivity compared equivalent micron- or millimetre-sized (bulk) particles. However, the effect soil on solubility, spatial distribution speciation ZnO has not yet been investigated. In this study, we examined diffusion solid phase an alkaline calcareous following application nanoparticulate bulk coated fertilizer products (monoammonium phosphate (MAP) urea) using...
ADVERTISEMENT RETURN TO ISSUEPREVFEATURENEXTApplication of Nontraditional Stable-Isotope Systems to the Study Sources and Fate Metals in EnvironmentDominik J. Weiss, Mark Rehkdmper, Ronny Schoenberg, Mike McLaughlin, Jason Kirby, Peter G. C. Campbell, Tim Arnold, John Chapman, Kate Peel, Simone GioiaCite this: Environ. Sci. Technol. 2008, 42, 3, 655–664Publication Date (Web):February 1, 2008Publication History Published online1 February 2008Published inissue 1...
Research Article| January 01, 2013 Zn isotope evidence for immediate resumption of primary productivity after snowball Earth Marcus Kunzmann; Kunzmann 1School and Environmental Sciences, University Adelaide, SA 5000, Australia *Current address: Department Planetary Sciences /GEOTOP, McGill University, 3450 Street, Montreal, Quebec H3A 0E8, Canada; E-mail: marcus.kunzmann@mail.mcgill.ca. Search other works by this author on: GSW Google Scholar Galen P. Halverson; Halverson...
As copper (Cu) stable isotopes emerge as a tool for tracing Cu biogeochemical cycling, an understanding of how fractionate during complexation with soluble organic ligands in natural waters and soil solutions is required. A Donnan dialysis technique was employed to assess the isotopic fractionation synthetic ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic (NTA), iminodiacetic (IDA) desferrioxamine B (DFOB), well Suwannee River fulvic (SRFA). The results indicated enrichment heavy...
This study examined the effects of applied selenium (Se) species, time application, method and soil water management regimen on accumulation Se in rice plants. Plants were grown to maturity a temperature- humidity-controlled growth chamber using three methods: field capacity (FC), submerged until harvest, drained 2 weeks before harvest. Two selenate (SeO42–) selenite (SeO32–), at rate equivalent 30 g ha–1. Four application methods employed as follows: (i) preparation, (ii) Se-enriched urea...