The role of bush fires in the formation and fate of dioxin like chemicals in Australia. A global (POPs) treaty signed by more than 100 nations targets the reduction and elimination of dioxins, which are persistent, bioaccumlative and highly toxic to humans. Bushfires have been suggested as the major source of dioxins in Australia. Experimental data indicate bushfires may not represent the actual sources of dioxin. Our aim is to experimentally establish the levels of dioxins formed and re-emi ....The role of bush fires in the formation and fate of dioxin like chemicals in Australia. A global (POPs) treaty signed by more than 100 nations targets the reduction and elimination of dioxins, which are persistent, bioaccumlative and highly toxic to humans. Bushfires have been suggested as the major source of dioxins in Australia. Experimental data indicate bushfires may not represent the actual sources of dioxin. Our aim is to experimentally establish the levels of dioxins formed and re-emitted from bushfires in Australia. The results will assist to make informed decisions that lead to effective action for reducing dioxin contamination in Australia, fulfilling the treaty requirements and protecting the population and environment.
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Arsenic speciation in Cleveland Bay, and controls on its uptake in commercial crab species. Marine organisms from the Great Barrier Reef exhibit elevated arsenic concentrations. It is not known if arsenic constitutes a human health risk since its chemical form has not been determined. The factors which control arsenic uptake in the GBR environment are unknown, making it difficult to predict how changes in water quality (such as phosphate which is chemically similar to arsenic) may alter arsenic ....Arsenic speciation in Cleveland Bay, and controls on its uptake in commercial crab species. Marine organisms from the Great Barrier Reef exhibit elevated arsenic concentrations. It is not known if arsenic constitutes a human health risk since its chemical form has not been determined. The factors which control arsenic uptake in the GBR environment are unknown, making it difficult to predict how changes in water quality (such as phosphate which is chemically similar to arsenic) may alter arsenic concentrations in these organisms. This project will determine the chemical form of arsenic in biota, sediment and water, and will test the hypothesis that the elevated arsenic levels reflect the low phosphate concentrations in the water.Read moreRead less
Atmospheric fate and processes of semi-volatile organic compounds in tropical climates. The outcomes from this study will contribute fundamental and quantitative information for evaluation of the fate of semi-volatile organic compounds (SOCs) in tropical systems, including Australia's World Heritage ecosystems such as rainforest and the Great Barrier Reef. The study addresses key international knowledge gaps with respect to the influence of climate on SOC atmospheric fate. Australia's geographic ....Atmospheric fate and processes of semi-volatile organic compounds in tropical climates. The outcomes from this study will contribute fundamental and quantitative information for evaluation of the fate of semi-volatile organic compounds (SOCs) in tropical systems, including Australia's World Heritage ecosystems such as rainforest and the Great Barrier Reef. The study addresses key international knowledge gaps with respect to the influence of climate on SOC atmospheric fate. Australia's geographical location within the tropical belt provides an ideal opportunity for leading this field of research and contributes relevant data for its commitment under the Stockholm Convention.Read moreRead less
Fluorinated surfactants and hydrocarbons at coastal airports. Fluorinated surfactants and hydrocarbons at coastal airports. This project aims to develop a model and parameters that describe transport and co-transport of fluoro-surfactants and hydrocarbons, priority pollutants with a wide range of physico-chemical properties, at coastal airports. Sixty percent of Australian airports are in the coastal plain, and all are affected by contamination from internationally banned fluoro-surfactants and ....Fluorinated surfactants and hydrocarbons at coastal airports. Fluorinated surfactants and hydrocarbons at coastal airports. This project aims to develop a model and parameters that describe transport and co-transport of fluoro-surfactants and hydrocarbons, priority pollutants with a wide range of physico-chemical properties, at coastal airports. Sixty percent of Australian airports are in the coastal plain, and all are affected by contamination from internationally banned fluoro-surfactants and hydrocarbons. Their extensive past use at firefighting training grounds resulted in costly remediation worldwide. Understanding the fate of persistent fluoro-surfactants from point sources, and their role in transporting non-polar chemicals such as hydrocarbons, will improve risk-based decision making. This research is expected to form the basis for effective risk management and intervention strategies.Read moreRead less
Darwin Harbour corals as environmental data archives and bio-monitors. The forecast rapid population growth and industrial development of the Darwin Harbour catchment necessitates research into novel environmental monitoring techniques to aid the sustainable management of the Harbours resources. This project will develop a powerful and cost-effective bio-monitoring system by using chemical data stored in yearly growth bands of coral skeletons stretching back at least two centuries. Such data wil ....Darwin Harbour corals as environmental data archives and bio-monitors. The forecast rapid population growth and industrial development of the Darwin Harbour catchment necessitates research into novel environmental monitoring techniques to aid the sustainable management of the Harbours resources. This project will develop a powerful and cost-effective bio-monitoring system by using chemical data stored in yearly growth bands of coral skeletons stretching back at least two centuries. Such data will form a comparative baseline against which present and future coral data on pollutants released by urban, industrial and other developments can be assessed.Read moreRead less
Application and evaluation of passive samplers for monitoring aquatic pollution. Pollutants in water bodies pose a threat to environmental and human health. Monitoring of chemicals in water has thus become a key challenge for environmental authorities. Sampling based on the
analysis of grab samples is expensive, complicated and provides only patchy data. Passive sampling devices that allow time integrated sampling of pollutants are a promising alternative. This collaborative research aims t ....Application and evaluation of passive samplers for monitoring aquatic pollution. Pollutants in water bodies pose a threat to environmental and human health. Monitoring of chemicals in water has thus become a key challenge for environmental authorities. Sampling based on the
analysis of grab samples is expensive, complicated and provides only patchy data. Passive sampling devices that allow time integrated sampling of pollutants are a promising alternative. This collaborative research aims to evaluate a series of existing and novel passive samplers both in laboratory and field conditions and determine sensitive parameters that significantly influence sampler behaviour.
The project should provide a set of new tools for more effective management of water pollution.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0668513
Funder
Australian Research Council
Funding Amount
$280,000.00
Summary
Time of Flight Aerosol Mass Spectrometer for Research on Airborne Particles and their impact on Health and the Environment. No TOF-AMS is currently available in Australia and thus, if acquired, it would significantly enhance Australian research capabilities in a field of high importance for the country and internationally, which is the nature and chemical composition of atmospheric aerosols, their origins and dynamics. The proposed studies with the application of this instrument would greatly in ....Time of Flight Aerosol Mass Spectrometer for Research on Airborne Particles and their impact on Health and the Environment. No TOF-AMS is currently available in Australia and thus, if acquired, it would significantly enhance Australian research capabilities in a field of high importance for the country and internationally, which is the nature and chemical composition of atmospheric aerosols, their origins and dynamics. The proposed studies with the application of this instrument would greatly increase scientific knowledge of atmospheric particles; would contribute to general welfare and economy in terms of enabling qualitative risk assessment of airborne particles on humans and the environment, and in turn, risk prevention. It would also enable the University partners to continue to produce graduates of high quality, conversant with cutting edge science.Read moreRead less
Exposure and sensitivity of marine turtles and dugongs to dioxins - a risk assessment in near shore marine environments of Queensland. The World Heritage Great Barrier Reef sustains unique marine biota such as dugongs and turtles. High concentrations of harmful dioxins have been reported recently in dugongs. However, the impacts of these contaminants on the health of dugong and turtle populations remain unknown. This study will redress the general lack of toxicological information available f ....Exposure and sensitivity of marine turtles and dugongs to dioxins - a risk assessment in near shore marine environments of Queensland. The World Heritage Great Barrier Reef sustains unique marine biota such as dugongs and turtles. High concentrations of harmful dioxins have been reported recently in dugongs. However, the impacts of these contaminants on the health of dugong and turtle populations remain unknown. This study will redress the general lack of toxicological information available for reptiles and dugongs. This includes assessments of exposure, pathways as well as toxicological responses to the compounds of concern, to provide a robust assessment of the risks associated. The outcomes will guide management policy designed to protect the environmental health of Queensland's Marine Parks.Read moreRead less
Reducing glyphosate exposure from high use practices. This project aims to investigate methods of reducing occupational exposure to glyphosate, a ubiquitous pollutant of emerging concern. This will be achieved through developing new cost-effective analytical and sampling tools and refining methods for integrating human exposure (biomonitoring) data with surveillance data on the pathways of glyphosate exposure from high use. The project will generate new targeted knowledge on (sub) population-spe ....Reducing glyphosate exposure from high use practices. This project aims to investigate methods of reducing occupational exposure to glyphosate, a ubiquitous pollutant of emerging concern. This will be achieved through developing new cost-effective analytical and sampling tools and refining methods for integrating human exposure (biomonitoring) data with surveillance data on the pathways of glyphosate exposure from high use. The project will generate new targeted knowledge on (sub) population-specific chemical exposures in Australia, and globally. Such data are critical to inform public health and chemical regulation policy, and provide clear guidance aimed at reducing exposures, to assess the effectiveness of existing regulations, and provide a framework for implementing surveys in the future.Read moreRead less