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/Series/C1968A00063

Parent handle

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

Citation address

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


Aboriginal and Torres Strait Islander people are advised that this website may contain the names, voices and images of people who have died, as well as other culturally sensitive content. Please be aware that some collection items may use outdated phrases or words which reflect the attitude of the creator at the time, and are now considered offensive.

We use temporary cookies on this site to provide functionality.
By continuing to use this site without changing your settings, you consent to our use of cookies.