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Results 801 - 850 of 1175
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Hernández L M - - 1999
The impact of the spill from the mine in Aznalcollar (Seville, Spain) on waterfowl in the Doñana National Park is assessed. The concentrations of Cu, Pb, Cd, Zn nd As in the liver and eggs of 16 species of waterfowl found dead in the Park between April and November 1998 ...
Antonini J M - - 1999
It was shown previously that fumes generated from stainless steel (SS) welding induced more pneumotoxicity and were cleared from the lungs at a slower rate than fumes collected from mild steel (MS) welding. These differences in response may be attributed to the metal composition of SS and MS welding fumes. ...
Camous J P - - 1999
A proximal pseudofracture of a Medtronic 6936 defibrillating lead adjacent to the ICD pulse generator was found on X ray. At this site, the multifilar metallic connector joins the stimulating lead before coiling around it. Conventional X ray of the abdomen does not visualize this connection. During ICD replacement, lead ...
Ekmekcioglu C - - 1999
The objective of this study was to show whether analysed nutrient data correlate with calculated values from a food database. For this purpose the calcium, magnesium, copper and zinc contents of 62 menu components from lunch menus were determined with ICP-AES. Then the analysed values were compared with calculated values ...
Reimann C - - 1999
Groundwater samples from 15 boreholes in crystalline bedrock aquifers in South Norway (Oslo area) have been collected in parallel in five different clear plastic bottle types (high density polyethene [HDPE], polypropene [PP, two manufacturers], fluorinated ethene propene copolymer [FEP] and perfluoroalkoxy polymer [PFA]. In the cases of polyethene and polypropene, ...
Edwards H M HM - - 1999
Three zinc depletion-repletion assays were carried out with chicks to determine Zn bioavailability in five sources of ZnO, three sources of ZnSO4.H2O, and two sources of Zn metal. A standard 23% CP corn-soybean meal diet was fed during the first 3 d posthatching, after which it was replaced with a ...
Spahn S A - - 1999
Persistent contaminants in ecosystems are often monitored via organisms that bioaccumulate the pollutant of interest. Several published studies have used colonial wading birds to assess contamination by heavy metals in aquatic ecosystems. Using a nonlethal sampling regimen, this study identified chick feathers and guano as tissues that best reflect local ...
Krełowska-Kułas M - - 1999
The aim of the work was to estimate the content of certain metals in goat's milk. The content of lead, cadmium, iron, copper, zinc, manganese and magnesium was determined using atomic absorption spectrometry. It was found that highly toxic elements [Pb, Cd] appeared in both raw and pasteurised goat's milk ...
van Alphen M - - 1999
A method for the determination of atmospheric heavy metal deposition rates has been developed using 0.5-m2 deposition trays at 0.1 m from the ground. Trays were spaced at 150-m intervals along a 1500-m line 500 m east of a Pb-Zn smelter. Ten sampling events of 1-3-h duration were conducted under ...
Christensen J M - - 1999
This study is a part of the Biological Risk Assessment of Human Metal Sensitisation (BRAHMS) project with the aim of elucidating clinical and physiological effects of repeated exposures to low concentrations of metal allergens. Nickel allergic individuals (n = 35) with hand eczema and healthy controls (n = 30) were ...
Moon C S - - 1999
The study was conducted to examine the validity of urinary cadmium (Cd) and lead (Pb) in comparison with the metals in blood as a biological marker of non-occupational exposure of general populations. Participants in four survey sites in Korea (107 non-smoking Korean women aged 30-49 years) offered peripheral blood, morning ...
Thomas K W - - 1999
A National Human Exposure Assessment Survey (NHEXAS) field study was performed in U.S. Environmental Protection Agency (EPA) Region V, providing population-based exposure distribution data for selected elements in several personal, environmental, and biological media. Population distributions are reported for the 11 elements that were measured in water and dietary samples. ...
Bendell-Young L I - - 1999
The objective of this study was to determine if ingestion of grit was a source of metal exposure to the spruce grouse, Dendragapus canadensis. A secondary objective was to assess whether grit could provide a supplemental source of essential minerals to their diet. Ca, P, Mg, S, Zn, Cu, Ni, ...
Indeherberg M B - - 1999
Five populations of the planarian Polycelis tenuis, collected from four locations in a metal contaminated stream and from one location in an unpolluted tributary stream, were compared for their sensitivity to cadmium by measuring survival, reproduction, and body size changes during 28 days of exposure via the water. Survival data ...
Matsuo T T Division of Nutrition and Biochemistry, Sanyo Women's College, Hiroshima, - - 1999
We estimated glycemic and insulinemic responses to short-grain rice (Japonica) and a short-grain rice-mixed meal (i.e. short-grain rice and other ingredients) in three healthy male, and five healthy female subjects aged 22-31 years. A 50 g carbohydrate portion of dry rice was used in this study to estimate the glycemic ...
Sheets R W - - 1999
Imported dishes can present human health hazards in two ways: (1) dinnerware that contains toxic metals in excessive amounts may gain entry to the US; and (2) imported decorative ceramic plates may be improperly labeled regarding permissible use with food. In the present study, non-random samples of dishes were purchased ...
Sanchez-Galan S - - 1999
Brown trout (Salmo trutta) and European minnow (Phoxinus phoxinus) were evaluated as target species to carry out genotoxicity tests. Assessment was made of their relative abundance in wild; their distribution areas; and their sensitivity to heavy metals, intraperitoneally exposing individuals of both species to a low dose (1.7 mg/kg body ...
Deutch B - - 1999
Persistent Organic Pollutants (11 pesticides and 14 PCB-congeners), and heavy metals (Cd, Cu, Hg, Pb, Se, and Zn) were determined in 175 pregnant women and 160 newborn infants (umbilical cord blood) from Disko Bay, Greenland, 1994-96. Among these, 135 women filled out questionnaires about drinking, smoking and intake of traditional ...
Moreno M A - - 1999
Copper, lead, cadmium, and zinc were determined by anodic stripping voltammetry after sample digestion and potentiometric stripping analysis was used for Pb and Cd determination in original samples. Selenium was determined by cathodic stripping voltammetry or hydride generation AAS. Element levels found in the whole blood sample in a group ...
Fels L M - - 1999
Cadmium as an environmental or occupational toxin has been well studied. Exposure can fairly easily be detected by analysis of cadmium in biological material. Different routes of cadmium uptake, such as via airborne particles, cigarette smoke or contaminated food, have been identified. Urinary concentrations associated with renal effects vary, depending ...
Dixon S - - 1999
The U.S. Department of Housing and Urban Development's (HUD's) Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing strongly recommend that after lead hazard control interventions all walls, ceilings, floors, and other horizontal surfaces be cleaned using a three-step process to reduce lead-contaminated dust and debris. The ...
Arnold M L - - 1999
Manganese is an element which is required by the human body. However, as with most metals, in large amounts manganese can be toxic. People who suffer from severe manganese intoxication have symptoms similar to those of Parkinson's disease. Preclinical symptoms of manganese intoxication have recently been detected in individuals working ...
Tripathi R M - - 1999
Concentrations of the essential elements Zn and Cu and potentially toxic elements Pb and Cd in different milk samples and baby food materials were measured, primarily to assess whether the intakes comply with recommended desired levels for essential and permissible levels for toxic elements. The geometric mean concentrations of Pb, ...
Shimbo S - - 1999
OBJECTIVES: To examine the accuracy of food composition table (FCT)-based estimation of dietary nutrient element intake in reference to the instrumental measurement by inductively-coupled plasma mass spectrometry (ICP-MS), as an extension of the first part of this study. DESIGN: Cross-sectional study. SETTING: Communities. SUBJECTS: 782 adult non-smoking women in 21 ...
Zhang Z W - - 1999
This survey was conducted to examine the extent of the exposure of Bangkok citizens to lead (Pb) and cadmium (Cd), and to evaluate the role of rice as the source of these heavy metals. In practice, 52 non-smoking adult women in an institution in the vicinity of Bangkok, volunteered to ...
Morgan J N - - 1999
Metals occur in all foodstuffs. Of particular concern is the presence of toxic metals, which include lead, cadmium, arsenic and mercury. The toxic metal content of foods is influenced by many factors ranging from environmental conditions during growth to post-harvest handling, processing, preparation and cooking techniques. For example, metal content ...
Ni B - - 1999
Three kinds of plant leaves, Chinese white aspen, arborvitae, and pine needles, have been sampled from the Yanshan Oil refinery complex, the Capital Iron and Steel Factory, and Badachu, a control area in Beijing, as biomonitors for air-pollution studies. Each sample was divided into two parts, washed, and unwashed. Thirty-one ...
Sallam Kh H - - 1999
A total of 50 random samples of Bagrus bayad were collected from various localities of River Nile at lower Egypt and were analyzed for determination of Hg, Cd and Pb concentrations by AAS. The obtained results revealed that the concentrations of Hg, Cd and Pb in fish muscles were ranged ...
Odendaal J P - - 1999
This study investigated the sublethal effects of CdSO4 on the terrestrial isopod species Porcellio laevis and its capacity to accumulate and compartmentalize cadmium. The ability of P. laevis to discriminate between uncontaminated and CdSO4-contaminated leaves was also studied. It was shown that sublethal effects in terms of mass changes of ...
Skerfving S - - 1999
Recent reports on concentrations of lead, cadmium, methylmercury, arsenic and nickel in some biological media in populations in the Baltic region are reviewed. In particular, children in parts of Poland, the Czech Republic, and Germany have uptakes of lead sufficient to cause adverse effects on the central nervous system and ...
Pyatt F B - - 1999
Early anthropogenic metalliferous activity on the island of Cyprus is outlined. Samples of Corsican pines, obtained from both a largely uncontaminated (control) and a metalliferous part of the Mount Olympus area of Cyprus, were analyzed by means of X-ray microanalysis. A total of 21 ions were recorded from the samples; ...
Masuzawa T - - 1999
Phytoplankton samples were collected during spring bloom of diatoms from three coastal areas of Japan using a NORPAC P-25 net (25-micron opening) with a NGG52 prenet (335-micron opening), and 25 major and trace elements have been analyzed by INAA. Concentration ranges of analyzed phytoplankton samples are much wider than the ...
Raghunath R - - 1998
Leachability of lead by tap water and tamarind solution from Indian pressure cookers while cooking with and without a safety valve is studied. Lead contamination of food by cookers is not very high when compared to the daily intake of lead from various food items consumed by the Indian community. ...
Engman J - - 1998
Fish from fresh, brackish and marine waters were analysed for their levels of Pb, Cd, Cr, Ni, Co, Zn, Cu, Mn, As and Se in muscle tissue. Various quality control procedures were implemented during the survey and the results were compared with those from several other surveys, most of which ...
Boisson F - - 1998
Bioaccumulation of lead in the mussel Mytilus galloprovincialis from 210Pb-labeled bulk seawater (dissolved and particulate pathways combined) was examined over 21 days. The lead bioaccumulation factor (BAF) at equilibrium was estimated to be 211 +/- 10 ml g-1. This value was two orders of magnitude lower than BAFs reported in ...
Van den Brink N W - - 1998
In The Netherlands the European badger Meles meles is presently recovering from earlier declines in numbers. The rate of recovery, however, varies between regions. It is argued that the effects of traffic accidents cannot account for the differences in recovery between regions. It is further shown that the population recovery ...
Krachler M - - 1998
With inductively coupled plasma-mass spectrometry (ICP-MS), the 18 trace elements Ba, (Be), (Bi), Cd, Co, Cs, Cu, La, Li, Mn, Mo, Pb, Rb, (Sb), (Sn), Sr, (Tl), and Zn were quantified in the digests of 13 formulas based on cow milk, of two formulas based on soy protein, of two ...
Zhang Z W - - 1998
It is known that, unlike Japanese, Koreans or southern Chinese who depend on rice as a major source of energy for daily life, people in north-eastern China rely not only on rice, but on wheat and other cereals and to a lesser extent also on pulses. Cereal and pulse samples ...
Svenes K B - - 1998
OBJECTIVE: The purpose of this work was to study the distribution of nickel within lung tissue obtained from nickel-exposed people and to evaluate the use of only one single sample for determination of the nickel burden of the lung. METHODS AND MATERIALS: The material used was lung tissue obtained from ...
Narisawa S - - 1998
Fosphenytoin, a water-soluble prodrug of phenytoin, degrades primarily to phenytoin at pH values <8 during long term storage; phenytoin readily precipitates when formed from fosphenytoin due to its limited aqueous solubility. The objective of this study was to develop stable formulations of fosphenytoin in the pH range of 7.4-8. 0 ...
Hopkins W A - - 1998
A number of recent studies have linked developmental, physiological, and behavioral abnormalities in amphibians to coal combustion wastes (coal ash). Few studies, however, have determined trace element concentrations in amphibians exposed to coal ash. In the current study we compare total body concentrations of 20 trace elements in adult southern ...
Melgar M J - - 1998
Cadmium content of 97 samples of some edible wild mushrooms, corresponding to 13 different species, was determined by graphite furnace atomic absorption spectrophotometry. Influence of some factors (species and ecology, morphological portion, and traffic pollution) and the importance of mushrooms as a dietary source of this heavy metal have been ...
Apostoli P - - 1998
Art glass manufacturing is one of the most interesting examples of exposure to complex mixtures. Among the raw materials used are silica sand, borax, carbonates, nitrates of Ca, Na, K, and a great number of compounds that are mainly oxides of As, Sb, Al, Zn, Cr, Ni, Sn, Se, Cd, ...
Watanabe T - - 1998
In 1996, peripheral blood samples and 24-h food duplicate samples together with samples of wheat, rice, foxtail millet and maize were collected from 50 non-smoking women each from Jinan (a provincial capital) and Baiquan (a nearby basically self-sustaining farming village) in China. The samples were analyzed for cadmium (Cd) contents ...
Wildgust M A - - 1998
The temporal variation of Polonium-210 (210Po) was examined in coastal sea water, the mussel Mytilus edulis, the winkle Littorina littorea and green alga Ulva lactuca in order to investigate the entry of 210Po into the marine food chain. More than 99% of 210Po in the water column occurred in the ...
Parsons E C - - 1998
The territorial waters of Hong Kong are highly contaminated with anthropogenic pollutants, including trace metals. Hong Kong's population of Indo-Pacific hump-backed dolphins (Sousa chinensis) inhabits an area where a high volume of sewage waste discharge and the close proximity of contaminated mud pits mean a considerable potential for trace metal ...
Moon C S - - 1998
OBJECTIVE: The present study was initiated to investigate the validity of cadmium (Cd) and lead (Pb) in urine in comparison with the metals in blood as a biological marker of nonoccupational exposure of general populations to these metals as environmental pollutants. DESIGN: Peripheral blood samples, morning spot-urine samples, and 24-h ...
Charbonneau J E - - 1998
Scanning electron microscopy (SEM) and x-ray microanalysis (EDS) were used to conduct forensic investigations on metal and glass foreign objects. SEM-EDS is an excellent method for identifying metal foreign objects in food, such as wire, dental fillings, bone, and metal packaging, based on their element composition. From a determination of ...
Tahvonen R - - 1998
The lead and cadmium contents of carbonated beverages, juices, beers and wines were determined by ETAAS using Zeeman background correction, peak height mode and the method of standard additions for quantitation. Other beverages were digested in conc. HNO3, but wines were diluted with 10% HNO3. The lead contents of beverages ...
Zhang Z W - - 1998
In total, 45 adult women in Manila, the Philippines, volunteered to participate in the study by offering peripheral blood samples and 24-h total food duplicate samples. In addition, they offered raw (uncooked) rice as well as wheat flour and maize starch from the kitchen. Lead (Pb) and cadmium (Cd) in ...
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