Showing papers in "Science of The Total Environment in 1975"

TL;DR: The results indicate that the fate of methylmercury in fish-eating marine birds differs fundamentally from that in marine mammals, and it is suggested that marine mammals are able to detoxify methylcury by a specific chemical mechanism in which selenium is involved.

TL;DR: Although arsenic occurred at high levels throughout the plant, including the seeds, the highest concentrations were recorded in old leaves, and inter-element correlations were found for arsenic and iron in the aerial parts of the plants, but no such correlation was found between arsenic and either copper, zinc, lead or phosphate.

TL;DR: Thallium, discharged in wastes from mines, ore-processing, and coal-burning plants, is contaminating the environment.

TL;DR: For example, in the vicinity of the River Tamar and of the metamorphic aureole around Dartmoor, the authors of as discussed by the authors found significantly higher concentrations of arsenic and heavy metals in soils contaminated by mining, smelting and mineralisation compared with those from nearby control areas.

TL;DR: The biochemical and physiological functions of the micronutrients copper and zinc have been reviewed with emphasis on factors, both endogenous and exogenous, associated with the maintenance of homeostatic levels in mammalian sera.

TL;DR: In this article, the trace metal content of bottom sediments and waters of five estuaries and their catchment drainage, representing both contaminated and relatively uncontaminated environments, were investigated.

TL;DR: The significance of this is discussed, particularly the fact that work on single compounds does not enable predictions to be made about the behaviour of commercial mixtures in the enviroment, and some tentative explanations are suggested for the behavious of the mixtures exposed to these cultures.

TL;DR: In this paper, the authors investigated the relationship between arsenic and water quality in three river systems and found that high concentrations of arsenic in waters correspond with high concentrations in associated sediments, indicating the potential use of geochemical reconnaissance surveys to water quality assessment.

TL;DR: A survey of agricultural soils has revealed extensive contamination by cadmium, lead and zinc and, to a lesser extent, by copper as discussed by the authors, and some radish samples exceeded the statutory limit for lead in food.

TL;DR: This report will present information on environmental, food and human contamination with PCB's in Japan especially also in some typically contaminated local areas, in addition to summarizing some overall aspects of the PCB problem in Japan.

TL;DR: The object of the study was to discover the relationship between mercury levels in maternal and cord blood, and paired samples from non-fish-eating women in southern Saskatchewan demonstrated no significant differences in mercury levels between maternal and Cord blood.

TL;DR: In this article, an improved mathematical model for bathing beach safety is proposed, which is derived by joining the probability of infection from a given dose (Poisson distribution) and probability of acquiring such a dose (lognormal distribution) even in the absence of better clinical and epidemiological data, the model permits an assessment of relative risk from certain hazards and the design of more meaningful bacteriological standards for individual beaches.

TL;DR: A greater consumption of fish and higher blood mercury levels were recorded during the fresh-water fishing season and Native persons living in northern Saskatchewan who had recently eaten localfresh-water fish had the higher levels.

TL;DR: A brief discussion of the significance of sulfuric acid aerosol is presented together with a review of methods for its sampling, separation and determination.

TL;DR: It seems that active transport of lead in all segments of the small intestine in 6-week old rats is negligible.

TL;DR: It has been observed that the pesticides, phenmedipham and oxamyl, affect the mineralization of nitrogen in soil as mentioned in this paper, and both of them had a harmful effect on nitrogenase activity in soil as measured by the acetylene reduction technique.

TL;DR: In this article, a newly developed method is introduced to measure the influence of pollution in marine environments by using cetyltrimethylammonium salts of the polyanions of the sponge Geodia cydonium.

TL;DR: In this article, a chemiluminescent ozone monitor using the ozone-ethylene reaction has been adapted for measuring unsaturated hydrocarbons, including substituted ethylenes (vinyl fluoride, chloride and cyanide), propylene, the butenes, 1,3-butadiene and several higher olefins.

TL;DR: Comparison of the results obtained for the Danube River and Danube Canal indicate that, with the exception of one sampling site, there are no statistically significant differences.

TL;DR: The applicability of high resolution spark source mass spectrometry to the determination of some selected trace elements in dried mussel samples is described in this paper, where the sampling was carried out at various locations along the English and Welsh coast at different times over a period of two years.

TL;DR: Results showed that distrubance was obvious during all periods of noise, and the total time of deep sleep was comparable with the nights without any noise, while during the night with 4 bangs there was a tendency for compensation.

TL;DR: An adsorption system is described for the removal of part per billion levels of the chemical carcinogen, 2-acetylaminofluorene (2-AAF), from industrial wastewater, which is highly efficient, operates at low cost, and requires minimal attention.

TL;DR: In this article, the authors describe how analysis by gas-solid chromatography can be used to establish or verify the composition of a variety of mixed gases using chromatographic packings derived from carbon.

TL;DR: In this article, the relationship between land-use and air quality is discussed, and the air quality can also be influenced by alteration of land use patterns, as well as the economic and social forces which shape cities.

TL;DR: In this paper, the effects of industrial CO2 on the carbonate system of the sea were examined and general implications concerning marine carbonates were discussed. But, the authors did not consider the effect of the cumulative industrial influx of CO2 into the atmosphere on marine carbonate systems.

TL;DR: It is shown that yearly averages of mixing heights can be calculated from air pollutant concentration data without reference to meteorological observations and are adequate to rapidly characterize an urban area in the low, medium or high bracket of pollutant concentrations.

TL;DR: In this paper, the results of cellulose filters were analyzed by atomic absorption spectroscopy, and the concentration of 11 metals was determined by the residual standard deviation among the quarters of the filter.