Sediments coastal

Fernandez P, M Grifoll, AM Solanas, JM Bayiona, J Albalges (1992) Bioassay-directed chemical analysis of genotoxic compounds in coastal sediments. Environ Sci Technol 26 817-829. 

MacGillivray AR, MP Shiaris (1993) Biotransformation of polycyclic aromatic hydrocarbons by yeasts isolated from coastal sediments. Appl Environ Microbiol 59 1613-1618. 

Borole DV, Krishnaswami S, Somayulu BLK (1982) Uranium isotopes in rivers, estuaries and adjacent coastal sediments of western India Their weathering, transport and oceanic budget. Geochim Cosmochim Acta 46 125-137... 

LAS, CDEAs, NPEOs receiving coastal Sediments PLE (Acetone-MeOH, 1 1)... 

LAS and major metabolites (SPC) PBDEs, PCDDs, PCDFs sewage sludge Coastal sediments Soxhlet (toluene) and clean-up with silica gel (QqQ) GC-EI-MS [Pg.34]

Eljarrat E, De La Cal A, Larrazabal D, Fabrellas B, Femandez-Alba AR, Borrull F, Marce RM, Barcelo D (2005) Occurrence of polybrominated diphenylethers, polychlorinated dibenzo-p-dioxins, dibenzofurans and biphenyls in coastal sediments from Spain. Environ Pollut 136(3) 493-501... 

Coastal sediment Yeast extract, peptone Halomonas sp strain GTW [133]... 

Blaylock JW, Bean RM, Wildung RE (1974) Determination of extractable organic material and analysis of hydrocarbon types in lake and coastal sediments. Special publication no. 409. National Bureau of Standards, Washington, DC, p 217... 

Hodge et al. [92] have described an atomic absorption spectroscopic method for the determination of butyltin chlorides and inorganic tin in natural waters, coastal sediments, and macro algae in amounts down to 0.4 ng. 

Pierard C, Budzinski H, Garrigues P (1996) Grain-size distribution of polychlorobiphenyls in coastal sediments. Environ Sci Technol 30(9) 2776-2783... 

Scoullos, M.J. 1986. Lead in coastal sediments the case of the Elefsis Gulf, Greece. Sci. Total Environ. 49 199-219. 

Gulf of Mexico 1986-87 coastal sediments vs. oyster soft parts ... 

Prahl, F.G., E. Crecelius, and R. Carpenter. 1984. Polycyclic aromatic hydrocarbons in Washington coastal sediments an evaluation of atmospheric and riverine routes of introduction. Environ. Sci. Technol. 18 687-693. 

Aloupi, M. Angelidis, M.O. 2001. Geochemistry of natural and anthropogenic metals in the coastal sediments of the island of Lesvos, Aegean Sea. Environmental Pollution, 113, 211-219. 

Takada and Ishimatari [20] extracted alkylbenzenes with normal C10-C14 and branched Cn-C13 alkyl chains from marine and coastal sediment and suspended matter in benzene methanol. The extract in benzene was then applied to a Florisil column for removal of copper sulphide and polar materials, and then subjected to silica gel column chromatography. Alkyl benzenes were quantified and identified using gas chromatography with flame ionization detection. The recoveries of alkyl benzenes were 81-94%. 

Sediment reference materials should be developed for both open-ocean and coastal areas. Open-ocean sediments should include carbonate-rich, silicate-rich, and clay mineral-rich types. Coastal sediments should be of the same types and should include a deltaic sediment that has not been in contact with seawater. Taken together with the algal-based materials, these sediment materials would represent a wide range of diagenetic states. The committee recommends that each of these solid... 

Gagosian, R.B., J.K. Volkman, and G.E. Nigrelli. 1983. The use of sediment traps to determine sterol sources in coastal sediments off Peru. Pp. 369-379 in Advances in Organic Geochemistry 1981, M. Bjoroy et al., eds., New York John Wiley and Sons. 

O2 concentrations, such as found in marine wetlands. High biomethylation rates have also been observed in coastal sediments. Because methylmercury is transferred up the food chain, the marine fish that occupy high trophic levels have very high mercury concentrations. In some cases, such as for tuna and swordfish, concentrations are high enough to pose human health risks. 

Mid-depth maxima are produced by mid-depth sources of metals. Some of these maxima are created by remineralization of detrital biogenic particles, such as seen in Figure 11.4f for cadmium. Others are caused by lateral transport of metals mobilized from coastal sediments as illustrated in Figure 11.17(a) for manganese. Mid-depth maxima can also result from hydrothermal emissions as shown in Figure 11.19 for Mn (aq) and He(g) at a site in the Eastern North Pacific Ocean. Hydrothermal fluids are emitted into the ocean from chimneys located atop the East Pacific Rise at water depths of about 2500 m. After entering the ocean, the Mn and He are entrained in subsurfece currents and... 

Sedimentation rates range from centimeters per year in coastal sediments down to millimeters per thousand years on the deep-sea floor. Thus, the effects of molecular diffusion are generally greater than that of advection in shaping pore-water concentration profiles. 

Idealized depth profiles of redox species in (a) open-ocean sediments (water depth >1000m) and (b) coastal sediments (water depth <1000 m). 

Before the recent discovery of anammox, most of the loss of fixed nitrogen from the ocean was assumed to be occurring via denitrification. We now know that some, if not most, of this loss is truly due to anammox. Anammox occurs in coastal sediments, anoxic marginal seas, and in OMZs. The bacteria responsible for anammox are similar to the ones found in wastewater bioreactors (Planctomycetales). 

In coastal sediments where organic carbon concentrations are high, the redox boundary is at or near the sediment-water interfece. Under these conditions, denitrification acts as a sink for nitrate. In some settings, the rate of sedimentary denitrification is fast enough to drive a diffusive flux of nitrate from the bottom waters into the sediments. Remineralization of organic matter imder suboxic and anoxic conditions releases... 

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