Behaviour of palladium(II), platinum(IV), and rhodium(III) in artificial and natural waters: Influence of reactor surface and geochemistry on metal recovery

Cobelo-Garcı́a, Antonio; Turner, Andrew; Millward, G.E.; Couceiro, Fay

doi:10.1016/j.aca.2006.12.029

Cited by 58 publications

(23 citation statements)

References 30 publications

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“…These species, having a negative charge, are likely to have little attraction for the negatively charged surface of the marine particles. In our previous studies (Cobelo-García et al 2007; we observed the precipitation of Rh spiked to seawater under typical pHs, and this was interpreted as the salt-induced destabilization of polymerized Rh complexes formed at such concentrations (10 µg L -1 ) at alkaline conditions. It is, however, unlikely that this polymerization occurs at typical concentrations (<0.4 ng L -1 ).…”

Section: Implications For the Speciation And Reactivity Of Rh(iii) Inmentioning

confidence: 77%

Kinetic effects on the interactions of Rh(III) with humic acids as determined using size-exclusion chromatography (SEC)

Cobelo-Garcı́a

2012

Environ Sci Pollut Res

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The anthropogenic inputs of Rh in the environment-together with other platinum group elements-have increased considerably during the last 20-30 years. However, thermodynamics and kinetics on the interaction of Rh with natural organic and inorganic ligands are still poorly characterized. Here, we report the time-dependent speciation of rhodium chlorides spiked to model freshwater with and without the presence of humic substances. Rhodium species were determined using size-exclusion chromatography-inductively coupled plasma mass spectrometry (SEC-ICP-MS). Results indicate that organic matter can effectively bind rhodium, but the extremely slow reaction kinetics of Rh plays a significant role on its speciation in natural waters. Accordingly, formation of Rh-organic complexes from spiked rhodium chlorides required around 15 days to reach equilibrium; this should be taken into account in those laboratory experiments where the biological interactions of Rh, using spiked samples, are studied. Regarding Rh inorganic speciation in freshwater, the available thermodynamic constants predict the dominance of the neutral trihydroxo and negatively charged tetrahydroxo rhodium complexes over typical pHs (6-8); our results, however, indicate only the presence of negatively charged hydroxocomplexes at pH 7. Reexamination of the Rh stability constants suggest that these hydroxylated rhodium complexes may also dominate its inorganic speciation in seawater.

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Section: Implications For the Speciation And Reactivity Of Rh(iii) Inmentioning

confidence: 77%

Kinetic effects on the interactions of Rh(III) with humic acids as determined using size-exclusion chromatography (SEC)

Cobelo-Garcı́a

2012

Environ Sci Pollut Res

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“…A reliable determination of these analytes in environmental samples is a difficult and complex task from an Table 8 there basic problems and challenges connected with analytics of this group of analytes in environmental samples and suggested ways to make it possible are presented. Issues dealing with problems of sample preparation and analysis of environmental and biological samples for PGE content are described in more detail in reviews and original literature (6,(149)(150)(151)(152)(153)(154).…”

Section: Analytical Problems Of Pge Determination In Environmental Anmentioning

confidence: 99%

Environmental Fate of Traffic-Derived Platinum Group Metals

Dubiella-Jackowska

Kudłak

Polkowska

et al. 2009

Critical Reviews in Analytical Chemistry

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Subsequently introduced standards on exhaust gas emissions determine the development of motorization industry as well as stimulate the search for new environmentally friendly solutions for road transport. One of such pro-environmental solutions, directed toward reducing emissions of toxic exhaust components, has been a project concerning application of catalytic exhaust gas converters in mechanical vehicles which contained platinum group metals (PGM). Despite undeniable benefits, application of PGM in gas converters is not a perfect solution because of the possible emission of these metals to the environment with exhausts. Presently the problem of increasing PGM content in the environment is the subject of interest of numerous research institute workers all over the world. Results of PGM determinations can form an exit point to run environmental impact assessment of road transport because most of PGM present in the environment comes from vehicle exhaust gas converters.Taking under consideration all of the above, there is a necessity of running wide studies to monitor concentration levels of this polluting group in biological and environmental samples.

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“…Accumulation of organic pollutants by microplastics primarily depends on their large surface area, hydrophobicity, and the modification of the surface due to weathering in the environment (Mato et al 2001;Endo et al 2005;Ogata et al 2009). However, loss of aqueous metals to plastic containers has been previously reported during incubation (Li et al 2001;Cobelo-Garcia et al 2007;Fischer et al 2007). However, loss of aqueous metals to plastic containers has been previously reported during incubation (Li et al 2001;Cobelo-Garcia et al 2007;Fischer et al 2007).…”

Section: Microplastics As a Sink For Toxic Chemicalsmentioning

confidence: 97%

“…It is usually considered that plastics are relatively inert toward aqueous metals. However, loss of aqueous metals to plastic containers has been previously reported during incubation (Li et al 2001;Cobelo-Garcia et al 2007;Fischer et al 2007). Not only the laboratory experiments (Holmes et al 2012(Holmes et al , 2014Turner and Holmes 2015) but also the long-term field measurement (Rochman, Hentschel et al 2014) have shown that microplastics can accumulate metals.…”

Section: Microplastics As a Sink For Toxic Chemicalsmentioning

confidence: 97%

Current understanding of microplastics in the environment: Occurrence, fate, risks, and what we should do

Peng

Wang

Cai

2017

Integr Envir Assess & Manag

216

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Microplastics pollution has been documented in the global environment, including at sea, in freshwater and in atmospheric fallout. Ingestion of microplastics by multiple kinds of organisms has been reported and has received increasing attention, because microplastics not only act as a source of toxic chemicals but also a sink for toxic chemicals. To better understand the great concerns about microplastics and associated toxic chemicals potential exposed to the organisms ingesting the debris, we should know more about the occurrence, fate, and risks of microplastics in the environment. What we should do depends on this better understanding. Integr Environ Assess Manag 2017;13:476-482. © 2017 SETAC.

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Behaviour of palladium(II), platinum(IV), and rhodium(III) in artificial and natural waters: Influence of reactor surface and geochemistry on metal recovery

Cited by 58 publications

References 30 publications

Kinetic effects on the interactions of Rh(III) with humic acids as determined using size-exclusion chromatography (SEC)

Kinetic effects on the interactions of Rh(III) with humic acids as determined using size-exclusion chromatography (SEC)

Environmental Fate of Traffic-Derived Platinum Group Metals

Current understanding of microplastics in the environment: Occurrence, fate, risks, and what we should do

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