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Effects of alumina refinery wastewater and signature metal constituents at the upper thermal tolerance of: 1. The tropical diatom Nitzschia closterium

Harford, Andrew J., Hogan, A.C., Tsang, Jeffrey J., Parry, David L., Negri, A.P., Adams, M.S., Stauber, J.L. and van Dam, Rik A. (2011). Effects of alumina refinery wastewater and signature metal constituents at the upper thermal tolerance of: 1. The tropical diatom Nitzschia closterium. Marine Pollution Bulletin,62(3):466-473.

Document type: Journal Article
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Title Effects of alumina refinery wastewater and signature metal constituents at the upper thermal tolerance of: 1. The tropical diatom Nitzschia closterium
Author Harford, Andrew J.
Hogan, A.C.
Tsang, Jeffrey J.
Parry, David L.
Negri, A.P.
Adams, M.S.
Stauber, J.L.
van Dam, Rik A.
Journal Name Marine Pollution Bulletin
Publication Date 2011
Volume Number 62
Issue Number 3
ISSN 0025-326X   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-79952195912
Start Page 466
End Page 473
Total Pages 8
Place of Publication United Kingdom
Publisher Elsevier Ltd
Field of Research 1104 - Complementary and Alternative Medicine
Abstract Ecotoxicological studies, using the tropical marine diatom, Nitzschia closterium (72-h growth rate), were undertaken to assess potential issues relating to the discharge from an alumina refinery in northern Australia. The studies assessed: (i) the species' upper thermal tolerance; (ii) the effects of three signature metals, aluminium (Al), vanadium (V) and gallium (Ga) (at 32°C); and (iii) the effects of wastewater (at 27 and 32°C). The critical thermal maximum and median inhibition temperature for N. closterium were 32.7°C and 33.1°C, respectively. Single metal toxicity tests found that N. closterium was more sensitive to Al compared to Ga and V, with IC 50s (95% confidence limits) of 190 (140-280), 19,640 (11,600-25,200) and 42,000 (32,770-56,000)μgL -1, respectively. The undiluted wastewater samples were of low toxicity to N. closterium (IC 50s>100% wastewater). Environmental chemistry data suggested that the key metals and discharge are a very low risk to this species.
Keywords Aluminium
Gallium
Nitzschia closterium
Northern Australia
Toxicity
Vanadium
DOI http://dx.doi.org/10.1016/j.marpolbul.2011.01.013   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Fri, 29 Aug 2014, 17:20:30 CST by Anthony Hornby