Anthrobiogeochemical platinum, palladium and rhodium cycles of earth: Emerging environmental contamination

Mitra, Arijeet; Sen, Indra Sekhar

doi:10.1016/j.gca.2017.08.025

Cited by 26 publications

(9 citation statements)

References 74 publications

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“…Hence, to invsestigate the relationship between PGEs and the compounds present in the environment is important for the evaluation of the potential risks of these elements to ecosystem and human health. In light of the probable migration path (vehicle exhaust-soil-aquatic system), PGEs would enter the aquatic system ultimately (Pawlak et al, 2014;Clément et al, 2015;Ruchter and Sures, 2015;Suchá et al, 2016;Mitra and Sen., 2017). The dissolved organic matter (DOM) is ubiquitous and plays a critical role in natural quantic environments (Verdugo et al, 2004;He et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Adsorption kinetics of platinum group elements onto macromolecular organic matter in seawater

Gao

Xing

et al. 2019

Acta Oceanol. Sin.

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Adsorption kinetics of the interaction between Pt, Pd and Rh (defined here as platinum group elements, PGEs) ions and macromolecular organic compounds (MOCs, >10 kDa), including humic acid, carrageenan and bovine serum albumin, and different cutoff fractions of natural organic matter (>1 kDa and >3 kDa) obtained from seawater using centrifugal ultrafiltration devices were investigated. For a given element, all the adsorption kinetics did not reach equilibrium except the interaction between Pt and >1 kDa cutoff, and between Pd and humic acid. For all the tested MOCs, the adsorption kinetics could be divided into two stages, a rapid adsorption process in the first 8 h and the desorption stage after the first 8 h until the equilibrium. The change trend of partition coefficient (log 10 K d ) values with experiment time was consistent with that of the kinetic curves. However, in the interaction between PGE ions and natural dissolved organic matter (NDOM), an obvious difference in the change trends of log 10 K d and kinetic curves was observed. It indicated that the partition behavior of PGE ions interacting with NDOM in seawater was a combined effect of different organic constituents. The adsorption and log 10 K d of PGEs in the >1 kDa NDOM fraction were higher and more stable than those in the >3 kDa NDOM fraction. The results also indicated that the 1-3 kDa NDOM may dominate the interaction between PGEs ions and NDOM. Moreover, no kinetic model could perfectly simulate the adsorption process. It indicated that the colloidal struction and morphology of MOCs or NDOM in seawater might be inhomogeneous. Hence, the interaction between PGE ions and organic matter in seawater was a complicated process and needs further research.

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Section: Introductionmentioning

confidence: 99%

Adsorption kinetics of platinum group elements onto macromolecular organic matter in seawater

Gao

Xing

et al. 2019

Acta Oceanol. Sin.

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“…Pd, Pt, and Au are siderophile elements, and their abundance in the earth’s crust is extremely low, at 0.4, 0.4, and 2.5 ng/g, respectively [ 4 ]. The Pd and Pt cycles on the Earth’s surface are affected by anthropogenic activities [ 5 ]. Pd and Pt concentrations in Greenland snow has increased by approximately 60–100-fold compared with that in ice cores of 7000 years ago [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Solid-phase extraction of palladium, platinum, and gold from water samples: comparison between a chelating resin and a chelating fiber with ethylenediamine groups

et al. 2023

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Dissolved palladium (Pd), platinum (Pt), and gold (Au) form inert chloride complexes at low concentrations of pmol/kg in environmental water, thus rendering difficulty in the development of a precise analytical method for these metals. Herein, we report the preconcentration of Pd, Pt, and Au with a chelating fiber Vonnel-en and a chelating resin TYP-en with ethylenediamine (en) groups. Batch adsorption experiments reveal the adsorption capacity of Vonnel-en for Pd(II), Pt(IV), and Au(III) in 0.10 M HCl as 0.53, 0.22, and 0.27 mmol/g, respectively. The adsorption capacity of TYP-en for Pd(II), Pt(IV), and Au(III) in 0.10 M HCl is 0.31, 0.17, and 0.52 mmol/g, respectively. In column extraction experiments using small-volume samples containing Pd(II), Pt(II), Pt(IV), Au(I), or Au(III) at concentrations of μmol/kg, TYP-en is able to quantitatively recover Pd, Pt, and Au from 0.01 to 0.2 M HCl irrespective of their oxidation states. In contrast, Vonnel-en is unable to quantitatively recover Au(I). In column extraction experiments using large-volume samples containing Pd(II), Pt(IV), and Au(III) at concentrations of pmol/kg, the recovery of Pd(II), Pt(IV), and Au(III) by TYP-en from 0.07 M HCl is 100–105%. However, the recovery of Pd(II), Pt(IV), and Au(III) by Vonnel-en from 0.03 to 0.3 M HCl is 102–110, 7–15, and 20–52%, respectively. Thus, the chelating resin TYP-en has a high potential for the multielemental determination of Pd, Pt, and Au in environmental water. Graphical abstract

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“…Owing to the potential hazards of these pollutants to humans (Merget and Rosner, 2001;Wiseman and Zereini, 2009;Sorensen et al, 2016;Zimmermann et al, 2017), researchers have investigated the biogeochemical behaviors of PGEs in various environmental matrixes (Reith et al, 2014). Furthermore, a migration path of these elements in the environment, vehicle exhaustdsoildaquatic system, was preliminarily defined (Mitra and Sen, 2017). Tiny particulate PGEs have been released from vehicles into the atmosphere in the abrasion and deterioration of catalysts and subsequently enter the soil with atmospheric deposition and rainfall (Colombo et al, 2008;Wiseman and Zereini, 2009;Pawlak et al, 2014;Clement et al, 2015;Ruchter and Sures, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Later, PGEs in their elemental states are transformed into oxidation states with the compounds present in soil (Ek et al, 2004;Sebek et al, 2011;Sucha et al, 2016). Finally, PGEs enter the aquatic environments such as rivers, estuaries and seawater with runoff and rainfall (Pawlak et al, 2014;Ruchter and Sures, 2015;Mitra and Sen., 2017). Moreover, PGEs have the characteristics of forming complexes easily with donor ligands such as suspended particulate matter (SPM) and dissolved organic matter (DOM) present in the natural aquatic system (Baker and Spencer, 2004;Turner et al, 2006;Turner and Wu, 2007).…”

Section: Introductionmentioning

confidence: 99%

Adsorption and fractionation of Pt, Pd and Rh onto inorganic microparticles and the effects of macromolecular organic compounds in seawater

Gao

2019

Environmental Pollution

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Adsorption and fractionation of Pt, Pd and Rh (defined here as platinum group elements, PGEs) onto the representative inorganic microparticles, including Fe 2 O 3 , MnO 2 , CaCO 3 , SiO 2 , Al 2 O 3 and kaolinite in seawater were investigated. The effects of macromolecular organic compounds (MOCs) as the representatives of organic matter, including humic acids (HA), bovine serum albumin (BSA) and carrageenan, on the adsorption were also studied considering that organic matter is ubiquitous in seawater and indispensable to marine biogeochemical cycles. In the absence of MOCs, the representative mineral particles Fe 2 O 3 and MnO 2 had the strongest interaction with PGEs. The adsorption of PGEs onto the representative biogenic particles SiO 2 and CaCO 3 and lithogenic particles Al 2 O 3 and kaolinite was similar or weaker than onto the mineral particles. MOCs inhibited the interaction between PGEs and the particles except for Pt and Pd onto the biogenic particles in artificial seawater. This impediment may be closely related to the interaction between particles, MOCs and elements. The partition coefficient (log K d ) of Pt was similar (~4.0) in the presence of MOCs, indicating that the complexation between Pt and MOCs was less important than hydrolysis or adsorption onto the acid oxide particle surface. Rh tended to fractionate onto the mineral and lithogenic particles in the presence of HA and carrageenan, while Pd was more likely to fractionate onto the biogenic particles. However, BSA enhanced the fractionation tendency of Pd onto the mineral particles. The results indicate that the adsorption behavior of Pd onto inorganic particles was significantly affected by the composition or the type of MOCs. Hence, the interaction between PGEs and inorganic particles may be greatly affected by the macromolecular organic matter in the ocean.

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Anthrobiogeochemical platinum, palladium and rhodium cycles of earth: Emerging environmental contamination

Cited by 26 publications

References 74 publications

Adsorption kinetics of platinum group elements onto macromolecular organic matter in seawater

Adsorption kinetics of platinum group elements onto macromolecular organic matter in seawater

Solid-phase extraction of palladium, platinum, and gold from water samples: comparison between a chelating resin and a chelating fiber with ethylenediamine groups

Adsorption and fractionation of Pt, Pd and Rh onto inorganic microparticles and the effects of macromolecular organic compounds in seawater

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