Mercury species uptake

Mikac, N., Z. Kwokal, D. Martincic, and M. Branica, 1996. Uptake of mercury species by transplanted mussels Mytilus galloprovincialis under estuarine conditions (Krka river estuary). Sci. Total Environ. 184 173-182. 

Hempel H, Hintelmann H and Wilken RD (1992) Determination of organic mercury species in soils by high-performance liquid chromatography with ultraviolet detection. Analyst 117 669-674. Heneiksson j and Tjalve H (1998) Uptake of inorganic mercury in the olfactory bulbs via olfactory pathways in rats. Environ Res 77 130-40. 

High concentrations of methyknercury in subthermocline low-oxygen seawater were significantly and positively correlated with median daytime depth (<200 m to >300 m) of eight species of pelagic fishes mean total mercury concentrations in whole fishes ranged between 57 and 377 jjg/kg DW. The enhanced mercury accumulations in the marine mesopelagic compartment is attributable to diet and ultimately to water chemistry that controls mercury speciation and uptake at the base of the food chain (Monteiro et al. 1996). 

TK interactions between metals and organic compounds are also possible phenan-threne appears to enhance the uptake of cadmium from sediment in the amphipod Hyalella azteca (Gust and Fleeger 2005). In the same species, chlorpyrifos enhances the accumulation of methyl mercury, but methyl mercury reduces acetylcholinesterase inhibition caused by chlorpyrifos, presumably due to the formation of a chlor-pyrifos-MeHg complex (Steevens and Benson 1999). 

Luoma, S. N. Physiological characteristics of mercury uptake by two estuarine species. Mar. Biol. 1, 269-273 (19TT). 

Lopez-Gonzalez et al. [218] also failed to cite the study by Humenick and Schnoor [216], but they analyzed in some detail the effect of carbon-oxygen and carbon-sulfur surface complexes on the uptake of mercuric chloride, which is very weakly ionized in aqueous solution. (The effectiveness of sulphurized carbons in removing mercury from air or water streams had been demonstrated earlier by Sinha and Walker [219], Humenick and Schnoor [216], and more recently by G6mez-Serrano and coworkers [208].) Their key results are summarized in Fig. 9. There was a noticeable uptake decrease when the activated carbons were oxidized with H Oi (AO). This decrease was not due to a reduction in the surface area and is contrary to the behavior of cationic metallic species, whose uptake is typically enhanced as a consequence of a lower pHp/x of the oxidized carbon. Upon subsequent heat treatment in helium at 873 K (A-873), the adsorption ca-... 

More recently, Peraniemi et al. [229] advocated the use of zirconium-loaded activated charcoal as an effective adsorbent for mercury (and especially for arsenic and selenium), the rationale being that the presence of active metal on an impregnated charcoal surface can greatly affect the adsorption affinity. They compared the pH effects on the uptakes by both a loaded and an unloaded commercial charcoal powder and concluded that the adsorption mechanism of mercury differs from that of the anionic arsenic and selenium species. They also noted the highly complicated behavior of mercury in aqueous solutions and did not attempt to explain the apparent absence of pH dependence of the uptakes. 

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