Mercury transport

Cossa D., Sanjuan J., and Noel J. (1994) Mercury transport in waters of the Strait of Dover. Mar. Pollut. Bull. 28(6), 385-388. 

Scherbatskoy T., Shanley J. B., and Keeler G. J. (1998) Factors controlling mercury transport in an upland forested catchment. Water Air Soil Pollut. 105, 427-438. 

Methylmercury transport between all compartments except brain and hair is modeled as plasma flow limited (i.e., plasma levels rapidly equilibrate with erythrocytes). Mercuric mercury transport parameters... 

Value is based on assumption that transport from gut tissue represents about 79% of total methyl mercury transport to gut lumen. Units are mL tissue/min/g tissue. h Value represents the average rate of Gl mucosal cell exfoliation. Estimated from Bertalanffy (1960). 

Figure 2-7. Model for Mercury Transport in the Pregnant Rat and Fetus...

Opella, SJ University of Pennsylvania Philadelphia, PA Structural studies of mercury transport protein. NCRR... 

Suer, P., and Allard, B. (2003). Mercury transport and speciation during elctrokinetic soil... 

Hamada R, Arimura K, Osame M. 1997. Maternal-fetal mercury transport and fetal methylmercury poisoning. In Sigel A, Sigel H, eds. Metal ions in biological systems Mercury and its effects on environment and biology. New York, NY Marcel Dekker, Inc., 406-420. 

The diffusive flux of Hg from the deeper, anoxic layers is insufficient to explain the enrichment of the sediment surface layer. Gobeil and Cossa (1993) estimated that this flux amounts to no more than 2.5% of the mercury transported to the sediment on settling particles. An analysis of suspended particulate matter in the fjord confirmed this, showing Hg concentrations in suspended particulate matter (SPM) similar to those in the surface sediment (Gagnon etal., 1996b). These studies effectively eliminate diagenesis as the reason for Hg enrichment in the surface sediments. 

Brown NL, Shih YC, Leang C, Glendinning KJ, Hobman JL and Wilson JR (2002a) Mercury transport and resistance. Biochem Soc Trans 30 715-718. 

Keeper LE, Baliatoei N and Ciaekson TW (1992) Methyl mercury transport across the blood-brain barrier by an amino acid carrier. Am J Physiol Regul Integr Comp Physiol 262 R761-R765. Kershaw TG, Ciaekson TW and Dhahie PH (1980) The relationship between blood levels and dose of methyl mercury in man. Arch Environ Health 35 28-36. 

Lowry GV, Shaw S, Kim CS, Rytuba JJ, Brown GE Jr (2002) Particle-facilitated mercury transport from New Idria and Sulphur Bank mercury mine tailings. 1. Column experiments and macroscopic analysis. Environ. Sci. Technol. (submitted)... 

Thus, mercury transported by alluvium would be about 7800 tons. The dissolved amount in runofiF (0.37 X 10 m containing a world mean calculated at 0.10 /Ltg/liter) would be equal to 3700 tons of mercury. The sum, 11,500 tons of mercury transported annually by water, is about 30 tons/day. On the journey from the source to the estuary, some of the mercury in water exchanges with alluvium, and some alluvium enriched in mercury is diluted with soil. The assumption was made that about 3600 tons of mercury in alluvium (0.12 gram/ton X 3 X 10 ton alluvium X 10 ton/gram) and 1600 tons dissolved mercury (4 X 10 m runofiF X 0.04 mg/m X 10 tons/mg) enter the coastal waters. Thus, a total of 5200 tons/year = 14 tons/day would go to the ocean (59). The ratio of 3600 tons suspended per 1600 ton dissolved mercury, equal to about 2.3, conforms to the mean ratio found in waters of the United States (58). 

ACM Articles Containing Mercury, Transportation of Hazardous Waste, personal com-... 

Mercury is a toxic environmental contaminant and is a primary issue of concern for several government agencies (e.g.. United States Environmental Protection Agency, Environment Canada, and Health Canada). Mercury transport and fate are global issues since, due to its dispersion and transformation into bioavailable forms, it can bioaccumulate not only in contaminated sites but also in remote freshwater lakes [1-3]. For example, Kejimkujik Park (Nova Scotia, Canada) has no known local anthropogenic inputs of mercury and yet contains fish and loons that have some of the highest blood mercury concentrations in North America [4,5]. 

In temperate regions, mercury speciation processes are important as they facilitate the movement of mercury to Polar Regions in a process referred to as the Grasshopper Effect (Fig. 2). Elemental mercury transport has erroneously... 

Maternal-Fetal Mercury Transport and Fetal Methylmercury Poisoning... 

Before discussing methods for the determination of mercury in natural waters, we first give some consideration to the mercury species which should be determined in evaluating mercury transport and transformations with particular reference to availability for bioaccumulation. Various compounds of mercury can be present in water in dissolved form or associated with particulate matter. The dissolved mercury can be present as inorganic complexes (more... 

McLEAN The concentration in water and precipitation used in the models for global mercury transport and for mercury methylation and uptake into biota are too high. Some reassessment of these models is certainly necessary. In addition, the concentration of methylmercury in water for the fish to accumulate is also lower than was first considered. 

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