chemical water pollutants

..The presence of heavy metals in the bed sediments and in the suspended phase indicates that Ganga riverine system acts as both carrier and sink for heavy metals in trace levels...

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..Measures for the minimisation of organic load and suspended solids loading are to be made. It is evident that the discharges of domestic and industrial sewage into these ponds cause the deterioration in the water quality over the period...

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..This indicates that intake from veterinary applications to the aquatic environment is of minor importance...

..Furthermore, urinary creatinine was found to be significantly associated with urinary arsenic, which further disqualifies the creatinine adjustment...

..The low affinity of OC to sediments suggests that presence of sediments would not reduce its bioavailability to microbial degradation...

..delphis. These results suggest that BPMO induction may be an early sign of exposure to organochlorine EDCs and can be used for periodic monitoring of Mediterranean marine mammal toxicological status...

..The mean concentration of beta-apo-OTC in river sediments was 20.8 +/- 7.8 mg/kg, and its ratio to OTC was approximately 0.11, nearly twice the ratio of alpha-apo-OTC and EOTC to OTC (0.058 +/- 0.014 and 0.061 +/- 0.015, respectively)...

..Arsenic is a known carcinogen but the risk of lung cancer from the widespread contamination of drinking water in rural Bangladesh has not been estimated...

..Our studies show that prolong drinking of arsenic-contaminated water is associated with hepatomegaly. Predominant lesion of hepatic fibrosis appears to be caused by arsenic induced oxystress...

..This raises serious concerns regarding the development of antibiotic resistance, and it creates a major challenge for producers and regulatory agencies to improve the situation...

..Our model provides a platform for further analyses of both individual and population responses of marine mammals to pollution, and to changes in energy availability, including those likely to arise through climate change...

..A maximum concentration was found for estrone with 70 ng/l. In 15 investigated German rivers and streams only estrone was present with a maximum concentration of 1.6 ng/l...

..Results demonstrate room for improvement in areas such as the use of threshold values to trigger investigations, chronic and mechanism specific toxicity screening and mixture toxicity for which possible solutions are proposed...

..The significance of the findings and possible mitigating influences are discussed in terms of the impacts on wild fish and the role of effluent treatment in reducing these...

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..The possibility of removing CBZ from STP effluents is studied by characterizing its ozonation process through the assessment of kinetics and the distribution of oxidation products...

..Residents drinking PFOA-contaminated water from the Little Hocking Water Association (LHWA) in Washington County, Ohio have serum PFOA levels approximately 80 times those in the general U.S. population...

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..This acquired form of long QT syndrome can result in life-threatening arrhythmias...

..Microcosm studies confirmed the presence of PCE-dechlorinating, acetate-oxidizing Desulfuromonas and hydrogenotrophic Dehalococcoides species in samples yielding positive PCR signals with the specific primers...

..Therefore, total As concentrations of nails could be considered as biomarker to As exposure in the endemic areas...

..Future studies are needed to further investigate the effects of agricultural runoff and to identify the biologically active agents, whether natural or pharmaceutical in origin...

..89; r-squared = 0.97). On the basis of water-use information for the aquifers studied, about 103,000 people with private wells could have water supplies with arsenic at levels of concern (greater than 10 microg/L) for human health...

..As such, it provides a powerful integrative tool for the assessment of biological effects of contaminants in these environments...

..Higher OC exposure and poor immune responses in first-born pups may indicate a higher risk of secondary morbidity and mortality than pups of multiparous dams...

..Based on present measured concentrations in surface water and on literature derived toxicity data it was concluded that ecotoxicological effects nor estrogenic effects are likely to occur in the field situation...

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..The utility of freshwater sponge bioassays is discussed as it relates to understanding possible mechanisms of action of endocrine disrupters on aquatic invertebrates...

..Additionally maternal exposures, such as dichlorodiphenyl-dichloroethylene (DDE), which are related to PCB exposure and may interfere with the PCB effect, were rarely taken into account...

..To our knowledge, this study revealed for the first time that the residents are exposed not only to As but also Mn and Ba from groundwater in the Red River Delta, Vietnam...

..These natural populations provide a foundation to discover critical gene pathways that have evolved in a complex natural environment in response to environmental stressors...

..For other responses, such as immune function, stress endocrinology, parasitism, or population-level effects, there are no indications of effects or there is such a paucity of good data that definitive conclusions cannot be made...

..The results from the present study call for an increased focus on the potential release of active pharmaceutical ingredients from production facilities in different regions...

..Measurement of the Hg isotopic composition of calcine is necessary when using Hg isotopes for tracing Hg sources from areas mined for Hg, especially mine water runoff...

..Our data suggest that arsenic may contribute to the development of diabetes mellitus by impairing pancreatic beta-cell functions, particularly insulin synthesis and secretion...

..It was estimated that 2-12 tonnes/ year of PFO are transported to the Artic by oceanic transport, which is greater than the amount estimated to result from atmospheric transport/degradation of precursors...

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..S. Environmental Protection Agency. It does not exist in nature but has been used widely since World War II. It is present in the serum of most Americans at about 4-5 ng/mL, although the routes of exposure remain unknown...

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..0 mg/l-years, when compared with those lacking drinking water exposure to arsenic after multivariate adjustment. It is concluded that IHD in the arseniasis-hyperendemic villages in Taiwan was associated with long-term arsenic exposure...

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..Calibrated leaching rates compare favorably to field and farm scale nitrogen mass balances. These data and interpretations provide a basis for developing improved management strategies...

..More studies are needed to confirm the possible association between arsenic and bladder cancer risk at such low exposure levels...

..Additional efforts were performed to reduce the gaps between specific models and their actual application. For instance, temperature effects and configuration of ozone contactors were considered in actual application...

..Fish (finfish or shellfish) may have health benefits and also contain contaminants, resulting in confusion over the role of fish consumption in a healthy diet...

..3 ng/g) in all organs from Tilapia and Corvina. These results demonstrate continued contamination of specific organochlorine compounds in sediments and resident fish species of the Salton Sea...

..In the aerobic degradation pathway, A9PEO2 is formed only to a minor extent and is even further degraded in several days. The endocrine disruptor nonylphenol was not found as a metabolite in this study...

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..83-0.84 for n = 24) and for estriol and estrone in water (r = 0.78 and 0.94 for n = 9 and 8, respectively)...

..NP and DES might have different metabolic mechanisms, the estrogenic effects of DES were more significant than those of NP...

..The morphologic changes observed are preceded by alterations in gene expression profiles detected in the tadpole tail, and the nature of these profiles suggest a novel mechanism of action for acetochlor...

..Strong acids and bases seem to be the best desorbing agents to produce arsenic concentrates. Arsenic concentrate treatment and disposal obtained is briefly addressed. This issue is very important but much less discussed...

..A LC-MS method for the trace analysis of these metabolites in water was developed and applied to municipal wastewater. Municipal wastewater treatment by a membrane bioreactor may gradually improve the removal of these pharmaceuticals...

..In a population that mainly drinks bottled water (e.g., pregnant women), individual THM uptakes are dominated by inhalation and dermal absorption during, showering, swimming in pools, and bathing...

..K. rivers. The composition of the mixture of estrogenic contaminants in the bile is species dependent and may determine the susceptibility of fish to the effects of exposure to estrogenic effluents...

..Consequently, folate nutritional status may influence arsenic methylation and toxicity...

..During treatment, keeping the manure moist and storing in a moderately warm place under aerobic conditions may also help to diminish sulfadimethoxine contamination...

..This corresponds to the requirements for WWTPs situated in sensitive areas according to the urban wastewater directive of the European Community (91/271/EEC) in moderate climatic zones...

..We conclude that environmentally realistic levels of atrazine induce behavioral and physiological effects on fish larvae that would compromise their survival expectations...

..The present work induced concrete remediation actions (pumping and treatment of the polluted groundwater), that are expected to strongly reduce dissolved Cd and Zn emissions into the Riou Mort River...

..The study revealed that physicochemical parameters like pH, EC, TDS, DO, BOD, COD exceeded the permissible limit, clearly indicating the need of proper treatment of waste water before discharge into the Noyyal river...

..Potential remediation options for the lake are reviewed and are discussed in the context of experiences made at other Hg-contaminated sites...

..While not perfect, we believe that this approach represents the most efficient means for evaluating GCW performance...

..These results confirm that, once treated, polluted sediments can be recycled...

..The variability in the microbial population is discussed in the light of the sediment granulometry, organic matter quality, fresh water inflow and pollution...

..Limestone presence played a very important role on Zn and Pb fractionation and environmental mobility. Results show the importance of including geological background in river pollution studies...

..It will be necessary to reduce the water drawdown rate during the fishing stage and possibly implement other best management practices to prevent the TSS concentration from exceeding 1 g/L...

..Overall, the results confirmed that this stretch of the San Pedro River is contaminated with heavy metals and other contaminants that might affect human health as well as the health of the ecosystem...

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..TREX is an appropriate tool for investigating multimedia environmental problems that involve water, soils, and chemical interactions in a spatially distributed manner within a watershed...

..The environmental health aspects associated with reclamation of wastewater include quality aspects and public health aspects. An attempt has been made in the present paper to describe these aspects and to suggest appropriate solutions...

..C.M.R., which is 1500 ppm. The high values of these parameters may have health implications and therefore these need attention...

..49 ppm), Sakarya River (Cu: 1.12 ppm) and Sariyar (Ni: 0.77 ppm). Unlikely to the other stations, no metal residues were determined in the sediment samples ofAladag Creek Station...

..01 Pb and 6.62 Zn. The high values show a strong PTE retention and indicate the importance of both sorption and precipitation as retention mechanisms. Sulphide precipitation was a likely mechanism due to highly reduced conditions...

..These results demonstrate that OR Japanese medaka may be a sensitive strain as an on-line monitor to predict potential impacts of water quality, but further studies are needed to elicit causative agents within the water mixture...

..It also proves that heavy metals biotoxicity in sediment is complicated, which can't be explained by SEM-AVS completely...

..This study also showed that there has been a change in the physicochemical characteristics of water and sediments in the sampling points downstream of the mine before its closure and after its activity renewal...

..01 to 25.0 ng/L. The much lower concentrations compared to wastewater indicate effective removal processes on passage through the soil and subsoil...

..It suggested that PRTR information is useful to identify hot spots, but further study is needed to understand the discharge of chemical substances from small businesses, farmland and houses...

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..Generating this important information is a critical research need and would reduce the uncertainty associated with conducting risk assessments...

..Contamination of some groundwater aquifers with F, Pb and Cr indicates natural and anthropogenic influences...

..The results suggest that Kandalaksha Bay has been impacted by industrial activity on the Kola Peninsula and that restricted water exchange will hinder its recovery from metal contamination...

..The results indicated that DI, HI, and total number species of protozoa could be used as biological indicators indicating the improvement of water quality...

..Total suspended solids in storm flow had a positive relationship with flow rates and exceeded benchmark level for the protection of aquatic biota in some samples...

..Petroleum use began around the 1920s and has dominated since the 1940s...

..It indicates that Hg is trapped in the soils of such a polluted catchment for probably several thousand years...

..This is the first study that suggests the importance of WWTP discharges as a potential source of PBDE contamination in the Great Lakes...

..Survival increased with increasing sediment depth, suggesting that surface sediments were probably less or non-toxic before industrialization...

..Therefore, Amous river seems not to be totally recovered from mine-related arsenic contamination after 3.5 km and may affect freshwater resources further downstream...

..As far as Ni is concerned the sediment is very highly polluted at Barabanki and Jaunpur D/s. No correlation was found between enrichment factor and geoaccumulation index...

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..At least 50 iron-rich samples could be analysed within one sample queue with a loss of sensitivity <10%. The recovery of nitrate was about 95%, demonstrated by spiking experiments...

..This study is aimed at determining the level of heavy metal toxicants in fish and water samples from the river. The effect of these elemental contaminants and the associated health hazards were examined...

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..It is anticipated that the results produced will provide the preliminary data needed to continue definitive investigations under the auspices of subsequent R01 funding. ..

..The proposed study would be the far larger than any prior cohort study of lead- exposed subjects, and will provide a model of collaboration across state-based surveillance systems. ..

..The proposed study would be the far larger than any prior cohort study of lead- exposed subjects, and will provide a model of collaboration across state-based surveillance systems. ..

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..Description (Provided by Applicant) ..

..This study has the benefit of being a large cohort study with a wide range of TCDD exposure, documented by individual-level TCDD measured in sera collected soon after the explosion. ..

..This study has the benefit of being a large cohort study with a wide range of TCDD exposure, documented by individual-level TCDD measured in sera collected soon after the explosion. ..

..1a. Pilot test the NEW Lifestyle curriculum skills in an internal medicine residency. 2. Evaluate the NEW Lifestyle intervention curriculum. 3. Disseminate the NEW Lifestyle curriculum to other medical schools. ..

..As in the past, findings from these animal studies will guide the selection of outcome measures for use in the birth cohort. ..

..This study will identify the areas of high risk and the associated HAPs exposures, information essential to elucidate the role of HAPs and to guide further study. ..

..Models to identify predictors of opioid misuse will be developed with half of the sample and validated with the other half. De-identified data on non- respondents will be utilized to adjust analyses for any non-response bias. ..

..Abstract Not Provided ..

..This study has the benefit of being a large cohort study with a wide range of TCDD exposure, documented by individual-level TCDD measured in sera collected soon after the explosion. ..

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..Adolescence is a period of rapid brain growth and development, yet very little is known about the impact of exposure to chemical contaminants during this period on cognitive and behavioral function. ..

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..However, it is important to establish these points for the mPR. In addition, the studies should provide indications of important regulatory events that might occur in human cells. ..

..ultimate goal: to translate research findings into sustainable strategies to reduce pesticide and other environmental exposures to children, and thus reduce the incidence of environmentally-related childhood disease ..

..The ultimate goal will be to develop a highly portable tobacco cessation curriculum that can be used a variety of educational settings. ..

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..In addition this teleost model should be valuable as a sentinel of pollution damage to aquatic ecosystems and the potential reproductive hazards of environmental contamination to human populations. ..

..Lastly, this study is one of the first to investigate the relative sensitivities of sperm and blood cells to chromosomal defects induced by benzene. ..

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..The proposed study will investigate a novel mechanism of PCB neurotoxicity and neuroendocrine toxicity which may also have significance for other neural functions such as those associated with mental health. ..

..This study will provide the first data on exposure and health effects of ED pesticides in a highly exposed population, complete the exposure profile of CHAMACOS children, and target interventions to reduce child exposures. ..