Large metalliferous spoil and smelting tip sites, generated during the Nabatean, Roman and Byzantine periods, continue to exist in southern Jordan and still exert important effects on both plants and animals (including humans) inhabiting the area. Humans are exposed to both copper and lead pollution as a consequence of the inhalation and ingestion of heavy metals, which often involves significant bio‐accumulation through trophic levels. This paper explores aspects of an important source of severe dietary contamination which has potential public health implications in terms of effects on the health of exposed individuals.
The problem of environmental management in a protected area has been examined in the paper. A methodological approach based on geographical information system (GIS) technology has been proposed in order to aid in all planning phases. The software tool has been illustrated and a case study has been presented with reference to a national park. Results show capabilities of the developed decision‐support system in identifying and comparing technical‐economical solutions compatible with protected area constraints.
Urban tropospheric ozone (O3) concentrations can reach 40 folds its background level due to traffic‐induced emissions and extensive industrial activities. As such, O3 has become a pervasive air pollution problem in urban areas despite major efforts to control its precursors. In this paper, O3 formation mechanisms are briefly described, countrywide emissions with emphasis on O3 precursors are summarized, and field measurements of O3 background levels and its precursors in an urban area are presented. Simulation results using a photochemical air quality model including a sensitivity analysis with respect to design ratios and mixing heights are then presented. Mitigation alternatives and policies to control O3 formation are examined in the context of country‐specific characteristics.
Solid wastes are today one of the worst problems in the word, mainly because of the increase in volume and the high capacity of environmental contamination. The aim of this work is to analyze the possibility of use sawing granite wastes as alternative ceramic raw materials for the production of bricks and roof tiles. Samples were collected from wastes of several granites companies from the northeast region of Brazil. They were submitted to particle size and mineralogical characterization. Some ceramic compositions were prepared with granite waste and submitted to technological tests. The results indicated that the wastes have particle size distribution and mineralogical composition similar to conventional non‐plastic ceramic raw materials. These wastes can be used in substitution of conventional raw materials in ceramic formulations in proportions up to 50 per cent. This can be important to save traditional raw materials from the region and decreasing the aggression to the environment.
Large metalliferous spoil and smelting tip sites, generated during the Nabatean, Roman and Byzantine periods, continue to exist in southern Jordan and still exert important effects on both plants and animals (including humans) inhabiting the area. Humans are exposed to both copper and lead pollution as a consequence of the inhalation and ingestion of heavy metals, which often involves significant bio‐accumulation through trophic levels. This paper explores aspects of an important source of severe dietary contamination which has potential public health implications in terms of effects on the health of exposed individuals.
