摘要：The level of lead contamination along the roadway Ljubljana to Zagreb was established in 184 soil samples. The samples were taken from two depths (0-5 cm and 15-20 cm) and at different distances from the roadway. The influence of terrain morphology, prevailing winds, geological parent material and type of vegetation was estimated. Heavy traffic si confirmed as main source of lead contamination (average enrichment factor 17) in soils.
摘要：Radon is a colourless, odourless naturally occurring inert radioactive gas (in the series from the periodic table of helium, neon, argon, krypton, xenon and radon). There are 27 known isotopes of radon of which three occur naturally; viz., ~219Rn, ~220Rn and ~222Rn. The latter is the longest lived (half life of 3.8 days) and is commonly called radon (Cothern and Smith, 1987). Radon occurs naturally and contributes about half of the background radiation to which we are all exposed (Cothern and Lappenbusch, 1986).
摘要：Scandinavia has one secondary lead smelter that recycles lead from approximately 85 /100 of used car batteries in Scandinavia and which has been active since the 1940s. The smelter, situ- ated in Landskrona, has undergone a comprehensive clean up programme during the last decade, during which time production has double, while at the same time discharges of dust and lead to the atmosphere have decreased.
摘要：A soil arsenic anomaly with concentrations up to 400 μg As g~-1 was discovered near Maggotty, St. Elizabeth, during an island-wide geochemical survey of Jamaica. Detailed sampling And chemical analysis of soil samples confirmed the arsenic levels and led to a better definition of The size of the anomaly. The area exceeding the 95th percentile (＞65μg As g~-1) of the island-wide Concentrations has been determined to be at least 10 km~2.
摘要：Soil studies, conducted in Maryland, Minnesota and Louisiana, have decribed the urban pattern of lead contamination. They have shown that the highest amounts of lead cluster within the interior of the largest cities. The results of the new Orleans urban patterns of distribution of soil lead provided the basis for further study. The hypothesis was tested that elementary school properties have the same pattern of soil lead contamination as their neighbouring residential communities.
摘要：Analysis of peat samples from four regions of the ritish Isles indicates that the concen- trations of Al, Pb and common transition metals tend, as ecpected, to be higher in regions subject to industrial pollution, but that the concentrations of the non-transitionmetals Na, K, Mg, Ca and Zn tend to be higher in regions remote from industrial pollution. Humci acids were extracted from the most pollution, and least polluted of the peat samples and some characteristics of these acids were compared with those of two commercial acids.
摘要：An investigation on the abundance and distribution of trace metals (Fe, Cu, Zn, Mn, Cr, Cd and Pb) in water, and nine species of fish samples from Calabar river was carried out in 1992. The concentrations of iron (6000-7240 μgl~-1) zinc (4910-7230μgl~-1), and cadmium (3- 7μgl~-1) showed moderate pollution while those of copper (420-630μgl~-1), manganese (23- 48μgl~-1), chromium (＜10-20μgl~-1) and lead (＜1-10μgl~-1) in water were well below WHO permissible levels.
摘要：Samples of urban dusts and sediments have been collected an categorised into three com- partments; those which act mainly as sources, those undergoing transport and those which have been deposited. The sediments were fractionated into ＜63 蘭 to match similar sized lacustrine sediments and ＜2 mm to represent natural and anthropogenic fluvially transported sediments. Preliminary results of total heavy metals analysis show that the ＜2 mm fraction of the source group exhibits the greatest variabilty in metal concnetraton.
摘要：The fluoride content in the water supply of the Soria province is not normally above 0.2 mg L~-1 and its geographical distribution is related to the lithological and geological features of the zone, the highest concentration being associated with the Miocene clay formation of the Almazan Basin. A statistical analysis confirms a connection between this fluoride content and tooth decay among Children in rural areas. However, other factors such as oral hygiene and diet have been found to affect Tooth decay.
摘要：Nine selected elements (Cu, Pb, As, Zn, Co, Ni, Cr, Cd and Fe) were determine by inductively coupled plasma atomic emission spectroscopy in 15 samples from the tailings pond (Zelazyn Most) and waste streams (Moshorzynke and Rudna) in the Kupferschiefer mining district in Southwest Poland. Waste water from mining and industry enter the Zelazny Most pond. The water then flows through Moskorzynke and Rudna streams, and discharges into the River Odra.
摘要：The addition of synthetic zeolites and similar materials to metal contaminated soils has been shown to reduce soil phytotoxicity and to improve the quality of plant growth on such amended soils. To gain an understanding of the mechanism by which the phytotoxicity of contaminated soils is reduced when treated with synthetic zeolites, sequential extraction procedures and soil solution techniques have been used to identify changes associated with metal speciation in amended soils.
摘要：Characterisation of the leachate originating from the Ano Liosia landfill (situated in Attica region, Greece) as assessment on the quality of the local aquifer were carried out. The experimental results showed that most of the parameters examined in the leachate samples such As colour, conductivity, TS, COD, NH_3-N, PO_4-P, SO~2-_4, Cl~-, K~+, Fe and Pb were found in high Levels. The organic load was quite high since the COD concentrations were in the range of 3250- 6125 mgL~-1.
摘要：Three study areas of Kwanak campus (Seoul national Univerisyt), Boeun (Choong-buk) and Gapyung (Kyonggi) were selected and classified according to their bedrock types in order to investigate soil-gas radon concentrations. The mean values of radon concentrations decreased in the order of Gapyung (40 BqL~-1)＞Kwanalk campus (30BqL~-1)＞Boeun(22BqL~-1), and decreased in the order of granite gneiss＞banded gneiss＞granite＞black slate-shale＞mica schist＞shale- limestone＞phyllite schist according to bed rock types.
摘要：More than 60 coal samples, predominantly from the principal coalfields of England and Wales (25) and Scotland (30), were analysed for lead by AAS and for stable lead isotopes by ICP-MS. While the average lead content of Scottish coal, 23.9 mg kg~-1, was more than double that of coal From England and Wales, 11.0 mg kg~-1, the corresponding mean ~206Pb/~207Pb ratios (±1 s.d.) were Nearly identical, at 1.181±0.011 and 1.184±0.006, respectively.
摘要：Soil, water and vegetation samples were collected from the Triada area of central Euboea and analysed for heavy metals in order to evaluate their environmental impact. The geology of the area studied includes ultrabasic rocks that are overlaid by Upper Cretaceous limestones whereas Fe-Ni mineralisation is intercalated between either the ultrabasic parent rocks or the karstified Jur- Assic/Triassic carbonates and the transgessive Upper Cretaceous limestones.
摘要：In this study two sites were selected in order to investigate groundwater contamination and spatial relationships among groundwater quality, topography, landuse and pollution sources. One site is the Asan area, an agricultural district where pollution sources are scattered and which is Mainly underlain by granite of Cretaceous age. The other site is the Gruogu area of Seoul city, an Industrial district where an industrial complex and residential areas are located and which is mainly Underlain by gneiss of Precambrian age.
摘要：Surface soils (0-15 cm) were sampled at 10-20 km intervals along two transect in Venezuela. One (1162 km, 70 samples) ran west to east parallel with the Caribbean coastline, the Other (920 km, 92 samples) ran south to north from the frontier with Brazil to the Caribbean shore. Sampling took place in both a wet and a dry season. Trace metals were extracted from dried, sieved (＜2 mm) soil with boiling aqua regia followed by analysis by ICP or flame AAS.
摘要：A potentially high bioavailability of arsenic in gold mine tailings from a site in northern California has been suggested by solubility studies. To help address this issue, an in vivo dosing Study was conducted using 12-day-old Swiss Webster mouse pups (n=8/group). A sample of size- Fractionated mine tailings from the site (＜20 μm particle size, 691 μg g~-1 arsenic) was prepared As an aqueous suspension and administered by gavage in a volume that provided 4 mg As/kg body Weight.
摘要：The transport, mobility, bioavailability and toxicity of metals in freshwaters can depend to a large extent upon their chemical speciation (Aiken et al., 1996; Tessier and Turner, 1995). It is therefore desirable to have a model which can predict metal speciation chemistry in natural systems. Recently models have begun to take into account the complex interactions of metals with macromolecules, colloids and sus- pended particles present in natural waters. Several approaches have been proposed for modelling such interactions (Logan et al., 1997).
摘要：Radionuclide tracer studies at the North East Atlantic BBL have delivered import- ant information on parameters required for the modelling of contaminant fate in this area. The residence times of contaminants in the zone of bioavailability are extended due to bioturbation by either advective or biodiffusive mixing, extending up to 20 cm depth in the sediment . Fluxes of material to a site vary because of the influence of bottom currents, so that contaminants may not be evenly distributed over the sea floor but concentrated in specific areas. The presence of the artificial radionuclides ~137Cs and ~241Am proves that anthropogenic contaminants are capable of reaching open ocena sediments within a matter of decades.