Titlebook: Chemistry for the Protection of the Environment; L. Pawlowski,W. J. Lacy (President),J. J. Dlugosz Book 1991 Plenum Press, New York 1991 A

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Heavy Metals Content in the Plant Biomass of Lawns in City Residential Districtsnvestigations showed that the content of elements such as Mn, Zn, Cr, Pb, Cu, Ni, Cd and Co does not exceed values dangerous to this type of environment. Only the iron content is increased to values close to those in more degraded habitats such as, for instance, along streets.

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Consideration of Hydrogeologic Factors in Designing Wellhead Protection Areasnmental Protection Agency to assist the states in designating and protecting areas surrounding public water supply wells from contaminants that may adversely affect human health. Under this program, the states will delineate the Wellhead Protection Area (WHPA) for each public well or wellfield. The

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urethritis

Standardization of Sample Extract Cleanup and Analytical Conditions for More Efficient Determinationfy sample extract cleanup and to shorten GC analysis time. To simplify sample extract cleanup, the practicality of the use of commercially available disposable cartridges is investigated. These cartridges contain specified amounts of standardized adsorbents such as Florisil, alumina, and silica gel,

pantomime

The Rationale for Geologic Disposal of High-Level Radioactive Waste in the United Statesc formations that will provide for retrievability of the waste for 50 years. The goal of radioactive waste isolation in mined repositories is to prevent unacceptable concentrations of radionuclides from migrating to the accessible environment. Early concepts of high-level radioactive waste disposal

GUILT

Optical Monitoring of Natural Organic Matter in the Aquatic Environmentare regarded as humic substances [1]. For the global carbon cycle, humic substances serve as a major reservoir of organic carbon [2]. Humic substances interact with pollutants and a more detailed knowledge of these interactions is needed to a better understanding of the behaviour of pollutants in th