Salt marshes, speciation

Kostka, J.E. Luther III, G.W. (1994) Partitioning and speciation of solid phase iron in salt-marsh sediments. Geochim. Cosmochim. Acta 58 1701-1710... 

Speciation of Dissolved Sulfur in Salt Marshes by Polarographlc Methods... 

Sulfur speciation In the porewaters of two salt marshes (Great Marsh, Delaware and Great Slppewlssett, Cape Cod, Massachusetts) are presented. A major finding Is that the porewaters from Great Slppewlssett salt marsh are dominated by Inorganic sulfur species throughout the depth profile. 

Allen, J.R.L., Rae, J.E. Zanin, P.E. (1990) Metal speciation (Cu, Zn, Pb) and organic matter in an oxic salt marsh. Severn Estuary, southwest Britain. Marine Pollution Bulletin 21, 574-80. 

Various polarographic techniques have been successfully used to measure elemental sulfur, S , and sulfide (H2S and HS ) concentrations in laboratory solutions [116], salt water [117], saline lake [118], freshwater [119], lake porewaters [120], salt marsh sediments [109,120], and marine porewaters [121], Using stripping square wave voltammetry, researchers have been able to measure sulfide species at nanomolar concentrations [118-120, 122,123], Recently, cyclic and linear sweep voltammetries have been used to quantify elemental sulfur S , hydrogenosulfide (HS ) and polysulfides (S ) with fast scan rates (IV s ) [124] for example, in estuarine sediments (from Rehoboth Bay, an inland bay located in Delaware), the sulfur speciation was found to change throughout a core profile, with dominant in the top layers (0-6 cm), dominant... 

Spencer KL, Cundy AB, Croudace IW (2003) Heavy metal distribution and early-diagenesis in salt marsh sediments from the Medway Estuary, Kent, UK. Estuar Coast Shelf Sci 57 43-54 Spokes LJ, Jickells TD (2002) Speciation of metals in the atmospehre. In Ure AM, Davidson CM (eds) Chemical speciation in the environment. Blackwell Science Ltd, Oxford Szczepaniak K, Biziuk M (2003) Aspects of the biomonitoring studies using mosses and lichens as indicators of metal pollution. Environ Res 93(3) 221-230 Townsend AT, Snape I (2002) The use of Pb isotope ratios determined by magnetic sector ICP-MS for tracing Pb pollution in marine sediments near Casey Station, East Antarctica. J Anal At Spectrom 17 922-928... 

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