Thèses sur le sujet « Chromium Environmental aspects »
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Abdol, Rahim Kartini. « Chromium dynamics in soil ». Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/37605/.
Texte intégralAnestis, Ioannis D. « Preference avoidance reactions of rainbow trout (Salmo gairdneri) following long term sublethal exposure to chromium and copper ». Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75767.
Texte intégralPre-exposed fish exhibited decreasing avoidance reactions compared to non-exposed populations. Increased tolerance to the toxicant, was suggested by the increase in avoidance threshold values with pre-exposure levels. Fish exposed to test concentrations matching their pre-exposure levels, clearly preferred this same concentration over the adjacent lower or higher test concentration.
A two mechanism avoidance model was proposed independent of toxicant used or level of pre-exposure. The toxicant concentration where the second mechanism begins to dominate was referred to as avoidance breakpoint, and was correlated to a MATC level for the toxicant in question. Olfactory responses were proposed to be associated with fish avoidance responses below the avoidance breakpoint, while hypoxic stress along with osmo- and iono regulatory stress appeared to be responsible for driving fish avoidance reactions beyond the avoidance breakpoint.
A clearance period of 7 days was sufficient to allow fish to recover normal avoidance behaviour following pre-exposure to Cr(VI) below the avoidance breakpoint.
Kamaludeen, Sara Parwin Banu. « Biotic-abiotic transformations of chromium in long-term tannery waste contaminated soils : implications to remediation ». Title page, table of contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phk15.pdf.
Texte intégralCheung, Ka-hong, et 張嘉康. « Chromate toxicity assessment and detoxification by bacteria from the marine environment ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B45015351.
Texte intégralGendusa, Tony C. « Toxicity of Chromium and Fluoranthene From Aqueous and Sediment Sources to Selected Freshwater Fish ». Thesis, University of North Texas, 1990. https://digital.library.unt.edu/ark:/67531/metadc330672/.
Texte intégralMeza, Maria I. « The use of PRBs (permeable reactive barriers) for attenuation of cadmium and hexavalent chromium from industrial contaminated soil ». Muncie, Ind. : Ball State University, 2009. http://cardinalscholar.bsu.edu/432.
Texte intégralSedumedi, Hilda N. « Chromium contamination in the vicinity of [the] Xstrata Wonderkop plant ». Thesis, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000304.
Texte intégralThe aim of this study was to develop and evaluate an analytical method for the determination of Cr(VI) in ferrochrome dusts and to apply the method in the analysis of environmental samples (grass, soil and tree bark) for Cr(VI) content (that might be caused by dust emissions originating from the smelter). Both the public and Xstrata Wonderkop ferrochrome plant will benefit from data of Cr(VI) determination generated from the study. The information can potentially be incorporated into health risk assessments of the affected geographical areas. The results of the investigation showed that ferrochrome smelter dust emissions were the source of contamination of the environment with Cr(VI). With time, Cr(VI) could accumulate in soil to unacceptable levels, thereby endangering both plants and animals.
Subramanian, Avudainayagam. « Long-term tannery waste contamination : effect on chromium chemistry / by Avudainayagam Subramanian ». 2002. http://hdl.handle.net/2440/21824.
Texte intégralIncludes bibliographical references (leaves 205-232)
xii, 232, [27] leaves : ill., plates ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Thesis (Ph.D.)--University of Adelaide, Dept. of Soil and Water, 2002
Kamaludeen, Sara Parwin Banu. « Biotic-abiotic transformations of chromium in long-term tannery waste contaminated soils : implications to remediation / by Sara Parwin Banu Kamaludeen ». Thesis, 2002. http://hdl.handle.net/2440/21767.
Texte intégral180, [4] leaves : ill. (chiefly col.) ; 30 cm.
Determines the effect of chromium on the soil microbial community and its activity, the biotic-abiotic mechanisms involved in chromium oxidation, and phytostabilization of chromium using plants and organic amendment in tannery-waste contaminated soil.
Thesis (Ph.D.)--University of Adelaide, Dept. of Soil and Water, 2002
Like, David E. « Management of chromium wastes in industry ». Thesis, 1991. http://hdl.handle.net/1957/37990.
Texte intégralGraduation date: 1991
Ochonogor, Oluchuku Richie. « Phytoextraction of chromium and iron from contaminated soil using psoralea pinnata ». Diss., 2014. http://hdl.handle.net/10500/13508.
Texte intégralEnvironmental Sciences
M. Sc. (Environmental Management)
Ball, Bruce L. « Soil column desorption studies on a chromium contaminated soil ». Thesis, 1992. http://hdl.handle.net/1957/36512.
Texte intégralGraduation date: 1992
Muller, Heike K. « Laboratory study of chromium sorption and desorption in undisturbed soil ». Thesis, 1992. http://hdl.handle.net/1957/36308.
Texte intégralOsathaphan, Khemarath. « Multi-metal equilibrium sorption and transport modeling for copper, chromium, and arsenic in an iron oxide-coated sand, synthetic groundwater system ». Thesis, 2001. http://hdl.handle.net/1957/32443.
Texte intégralGraduation date: 2002
Desta, Tsegazeab Goje. « Humic acid pretreatment for enhancing microbial removal of metals from a synthetic 'wastewater' ». Thesis, 2004. http://hdl.handle.net/10413/3576.
Texte intégralThesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2004.
Aigbe, Uyiosa Osagie. « Groundwater purification using functionalised magnetic nanoparticles (electromagnetic separation) ». Thesis, 2018. http://hdl.handle.net/10500/25161.
Texte intégralPhysics
Ph. D. (Physics)