Territory Stories

Darwin Harbour mangrove sediment metal and arsenic dynamics

Details:

Title

Darwin Harbour mangrove sediment metal and arsenic dynamics,

Creator

Munksgaard, Neils, Charles Darwin University, Environmental Chemistry and Microbiology Unit (ECMU),

Collection

E-Publications, E-Books, PublicationNT, 26/2017,

Date

2016-06-01,

Location

Darwin Harbour,

Description

The aim of this study was to determine the capacity of mangrove sediment to desorb (release) or adsorb (bind) metals under simulated natural conditions. Specifically the study was designed to:  Determine the potential for sediment to release metals and arsenic and to provide a risk assessment with reference to ecosystem quality guidelines  Determine the capacity of sediment to adsorb elevated levels of mobile metals and arsenic in a hypothetical pollution event  Measure metal distribution coefficients (Kd-values) for solid/liquid exchange of metals and arsenic for use in geochemical and hydrodynamic modelling of metal mobility, This research was funded by the INPEX-led Ichthys LNG Project.,

Notes

Prepared for: Aquatic Health Unit, Northern Territory Department of Land Resource Management.,

Table of contents

Executive Summary -- List of Figures -- List of Tables -- 1. Introduction and aims -- 2. Darwin Harbour geomorphology and metal pollution status -- 3. Field sampling -- 4. Laboratory analyses -- 5. Results -- 6. Discussion -- 7. Conclusions -- Acknowledgements -- Reference List -- Appendix 1. Summary of grainsize distribution data (full reports for individual samples supplied as an electronic file) -- Appendix 2. Sediment TOC, TN, TS, RIS and potential acidity data -- Appendix 3. Sediment metal and As data (strong acid extraction) -- Appendix 4. Sediment metal and As data (dilute acid extraction) -- Appendix 5. Desorption experiment data -- Appendix 6. Adsorption experiment data -- Appendix 7. Solid/liquid distribution data (Log Kd values),

Language

English,

Subject

Water Quality, Aquatic Health,

Publisher name

Charles Darwin University,

Place of publication

Casuarina,

Series

26/2017,

Format

49 pages : colour illustration and maps ; 30 cm.,

File type

application/pdf,

Use

Copyright,

Copyright owner

Charles Darwin University,

License

https://www.legislation.gov.au/Details/C2019C00042,

Parent handle

https://hdl.handle.net/10070/754532,

Citation address

https://hdl.handle.net/10070/774776