Pollutant, mobility

G. Silver, J. E. Sawyer, and J. C. Summers, eds.. Catalytic Control of Air Pollution Mobile and Stationay Sources," ACS Symposium Series 495,1992. 

When the rates of sorption or desorption processes are known, environmental fate modeling can provide an educated estimate and prediction on the accessibility and bioavailability of a target pollutant to a specific transport mechanism in the environment. Hence, the present chapter is an attempt to assess fate (i.e., in terms of pollutant mobility using predictive sorption or desorption coefficients) as well as effects (i. e., in terms of bioavailability) of various pollutants and to correlate these observations for development of predictive relationships. 

In line with the main objective of the present chapter, the next section discusses structure-activity relationships (i.e., SAR), such as molecular connectivity indices, and how these can be used to predict pollutant mobility and bioavailability. 

Kersten, M. and Forstner, U. (1991) Geochemical characterization of pollutant mobility in cohesive sediments. Geomar. Letts, 11, 184-187. 

Remediation aims at the reduction of risk. The disappearance of native pollutants during remediation does not necessarily result in a reduction of risk. Screening tests may be valuable monitoring tools to evaluate remediation measures as they may indicate, for example, an undesirable formation of toxic intermediates or an unwanted increase of pollutant mobility. 

In Chapter 3.4 a method has been presented for long-term prognosis of metal pollutant mobility, which combines column circulation leaching experiments at variable pH/E -conditions with sequential extraction procedures on the solid waste material before and after these experiments (Schoer FSrstner, 1987). Temporal release patterns are different for the individual elements (Figure 6-5) While at pH 5/400 mV release of cadmium seems to be completed within the experimental period mobilization of copper is still going on and the end point cannot be estimated from the data of the "kinetic" experiments. The same effect has been found for the examples of thallium and vanadium. For the other elements, the endpoint of release can be determined as approximately 10 mg cobalt, 0.6 mg cadmium, 600 mg zinc and 0.3 mg chromium, 2 mg barium and 20 mg lead (per 100 g of solid substrate treated with 140 L solu-... 

Ahlf, W. and Heise, S. (2007) Quality assurance of ecotoxicological sediment analysis. In Westrich, B. and Forstner, U. (eds) Sediment Dynamics and Pollutant Mobility in Rivers An Interdisciplinary Approach, Springer, Berlin, Germany, Chapter 10.1, pp. 380-391. 

Westrich, B. and Eorstner, U. (2005) Sediment dynamics and pollutant mobility in rivers (SEDYMO), assessing catchment-wide emission-immission relationships from sediment smdies, J. Soils and Sediments, 5, pp. 197-200. 

J.M. Bart, A. Pentenero, M.F. Prigent "Experimental Comparison Among Hydrocarbons and oxygenated Compounds for their Elimination by Three-Way Automotive Catalysts", Catalytic Control of Air Pollution-Mobile and Stationary Sources, ACS Symposium Series 495, pp. 42-60, Washington, 1992. 

The CAA of 1990 contains six titles and related provisions designed to encourage air pollution abatement and reduction. These provisions address several environmental pollution problems that affect us all, such as tropospheric ozone, hazardous pollution, mobile emissions, urban pollution, acid deposition, and stratospheric ozone depletion. Because the scope of this chapter is on solvents and the regulations that impact their use, only Titles I, III, V, and VI and their relevance to solvents will be discussed. 

Fig. 2.1. Elution test to evaluate metal pollutant mobility in waste (Obermann and Cremer 1991)...

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