Zinc speciation

Vulkan T., Mingelgrin V., Ben-Asher J., Frenkel H. Copper and zinc speciation in the solution of a soil-sludge mixture. J Environ Qual 2002 31 193-203. [Pg.353]

In natural waters, dissolved zinc speciates into the toxic aquo ion [Zn(H20)6]2+, other dissolved chemical species, and various inorganic and organic complexes zinc complexes are readily transported. Aquo ions and other toxic species are most harmful to aquatic life under conditions of low pH, low alkalinity, low dissolved oxygen, and elevated temperatures. Most of the zinc introduced into aquatic environments is eventually partitioned into the sediments. Zinc bioavailability from sediments is enhanced under conditions of high dissolved oxygen, low salinity, low pH, and high levels of inorganic oxides and humic substances. [Pg.725]

Bruland, K. W. (1989). Oceanic zinc speciation complexation of zinc by natural organic ligands in the central North Pacific, Limnol. Oceanogr., 34, 267-283. [Pg.257]

Xue, H.-B. and Sigg, L. (1994). Zinc speciation in lake waters and its determination by ligand exchange with EDTA and differential pulse anodic stripping voltammetry, Anal. Chim. Acta, 284, 505-515. [Pg.258]

Scheinost AC, Kretzschmar R, Pflster S, Roberts DR. Combining selective sequential extractions, X-ray absorption spectroscopy, and principal component analysis for quantitative zinc speciation in soil. Environ. Sci. Technol. 2002 36 5021-5028. [Pg.190]

B. Michalke, D. Munch, P. Schramel, Advanced quality control for zinc speciation investigations in human breast milk, Fresenius J. Anal. Chem., 344 (1992), 306-310. [Pg.563]

Zinc Speciation in Contaminated Soils Combining Direct and Indirect Characterization Methods... [Pg.196]

Hesterberg, D. et al., X-ray absorption spectroscopy of lead and zinc speciation in a contaminated groundwater aquifer, Environ. Sci. Technol., 31, 2840, 1997. [Pg.233]

Webb, S.M., Leppard, G.G., and Gaillard, J.-F., Zinc speciation in a contaminated aquatic environment Characterization of environmental particles by analytical electron microscopy, Environ. Sci. Technol., 34, 1926, 2000. [Pg.233]

Roberts, D.R., Scheinost, A.C., and Sparks, D.L., Zinc speciation in a smelter-contaminated soil profile using bulk and microspectroscopic techniques, Environ. Sci. Technol., 36, 1742, 2002. [Pg.235]

Ellwood MJ, Van den Berg CMG. Zinc speciation in the Northeastern Atlantic Ocean. Marine Chem. 2000 68 295-306. [Pg.1045]

Donat J. R. and Bruland K. W. (1990) A comparison of two voltammetric techniques for determining zinc speciation in northeast Pacific Ocean waters. Mar. Chem. 28, 301-323. [Pg.2900]

Roberts DR, Scheinost AC, Sparks DL (2002) Zinc speciation is a smelter-contaminated soil profile using bulk and microscopic techniques. Environ Sci Technol 36 1742-1750 Robinson IK, Tweet DJ (1992) Surface X-ray diffraction. Rep Prog Phys 55 599-651 Rochette EA, Li GC, Fendorf SE (1998) Stability of arsenate minerals in soil under biotically-generated reducing conditions. Soil Sci Soc Am J 62 1530-1537... [Pg.98]

Bostick BM, Hansel CM, La Force MJ, Fendorf S (2001) Seasonal fluctuations in zinc speciation within a contaminated wetland. Env Sci Tech 35 3823-3829... [Pg.421]

Figure 3 North Pacific zinc speciation (A) depth profile of zinc-complexing organic ligand presented as percentage of organically complexed zinc (B) dissovled zinc depth profile (C) Zn + ion depth profile as logarithmic concentration values.

Environmental Fate. Zinc partitions to the air, water, and soil (Callahan et al. 1979 Guy and Chakrabarti 1976 Houba et al. 1983 Pita and Hyne 1975). Zinc occurs in the environment mainly in the +2 oxidation state (Lindsey 1979). Adsorption is the dominant fate of zinc, resulting in enrichment of zinc in suspended and bed sediments (Callahan et al. 1979). The mobility of zinc in soil has been characterized (Base and Sharp 1983 Bergkvist et al. 1989 EPA 1980d Hermann and Neumann-Mahikau 1985 Kalbasi et al. 1978 Saeed and Fox 1977 Tyler and McBride 1982). No estimate for the atmospheric lifetime of zinc is available. Development of pertinent data on the atmospheric processes important for zinc speciation in the atmosphere would be helpful. Development of this information would permit construction of a comprehensive model for the transport and interaction of zinc not only in air but in other media as well. Transformation in air and water can occur as a result of changes in chemical speciation (Anderson et al. 1988 Callahan et al. 1979 EPA 1980d Stokinger 1981). Data that describe the transformation processes for zinc in soil or the fate of zinc in soil are needed. A model of zinc flux from all environmental compartments would be useful for providing information on the overall environmental fate of zinc. [Pg.132]

Harris D J, Brodholt JP, Sherman DM (2001) Computer simulation of zinc speciation in aqueous ZnCl2 solution. Molecular Physics (in press)... [Pg.314]

Table 6.5. Lead and zinc speciation in some polluted soils differing in their texture and other properties... [Pg.69]

Jakuba RW, Moffet JW, Saito MA (2008) Use of a modified, high-sensitivity, anodic stripping voltammetry method for determination of zinc speciation in the North Atlantic Ocean. Anal Chim Acta 614 143-152... [Pg.91]

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