Download or read book Evaluation of Selected Heavy Metal Concentrations in the Soil of an Urban University Campus written by Kenneth U. Erondu and published by . This book was released on 1982 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 29 (thesis year 1984) a total of 12,637 theses titles from 23 Canadian and 202 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 29 reports theses submitted in 1984, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Download or read book Availability Transfer and Balances of Heavy Metals in Urban Agriculture of West Africa written by Nafiu Abdu and published by kassel university press GmbH. This book was released on 2011 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Screening Guidance written by and published by . This book was released on 1996 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HEAVY METAL ACCUMULATION IN URBAN SOIL written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Lead (Pb), cadmium (Cd), and arsenic (As) are three common non-essential heavy metals found in urban soils and can prove toxic to animals, humans, and some plants at low concentrations. The main exposure pathways of heavy metals in humans are through ingestion and inhalation of soil particles and ingestion of contaminated food. When dealing with contaminated soil in urban environments, activities like urban gardening can increase the likelihood of these exposure pathways, so heavy metal toxicity from contaminated soil can become a greater risk with the increased interest in urban agriculture. The US EPA created target concentrations for these heavy metals in residential soil, industrial soil, and agricultural soil. If any of these soils exceed their designated concentration, the US EPA has deemed them hazardous to both human health and the surrounding ecosystem. Phytoextraction is being considered and tested as a method to remove heavy metal pollution in urban soils. Two popular forms of phytoextraction are 1) using hyperaccumulator plants and 2) chelate-assisted phytoextraction using metal tolerant species. Hyperaccumulating plants can bioaccumulate 100 to 1000 times the heavy metal concentration of non-hyperaccumulators but have low biomass production/growth rates and are heavy metal specific. Chelate-assisted phytoextraction has higher a growth rate and biomass production, but can be expensive, has a stronger potential for heavy metal trophic transfer, and can lead to leaching of heavy metals off of the contaminated site. Phytoextraction using hyperaccumulating plant species may pose less risk and be suited for smaller sites with specific heavy metal pollution whereas chelate-assisted phytoextraction may be a better approach for large sites with time sensitive phytoextraction needs, but because this method posed may risks, it needs to be highly monitored.
Download or read book Assessment of Gross Accumulation and Leaching Characteristics of Heavy Metals in a Contaminated Urban Soil written by Michael David Kaminski and published by . This book was released on 1998 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heavy Metal Soil Concentrations in the Urban Toledo Ohio Area written by Karen R. Burris and published by . This book was released on 2021 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban environments have a history of anthropogenic input of heavy metals to soils. Toledo, Ohio is an urban setting that has been altered through heavy industry and transportation dating back to the 1800s. Heavy metal contamination in soil has been shown to cause serious health effects in humans, such as brain damage, birth defects, cancer, and even death.A total of 137 Toledo soil samples were collected in collaboration with local Toledo schools, the Manos Community Garden, and a previous study completed by Stewart et al (2014). Stewart's study samples and the local Toledo schools' soil samples were collected by K-12 students through a hands-on citizen science project. The samples were analyzed to determine the concentrations of a series of heavy metals, including arsenic, cadmium, chromium, lead, nickel, and zinc. The results revealed multiple samples with elevated levels of all six focus metals greater than the Ohio EPA's soil background levels of the region. Two of these elements, arsenic and lead, had concentrations higher than the USEPA screening level for soils of this region in 73% and 7% of samples, respectively. Locations with elevated heavy metals concentrations in soils were mostly residential yards with older houses and within areas of high transportation. Therefore, the elevated levels of heavy metals were likely deposited from a legacy of human activities. Heavy metal predictive concentration maps of the Toledo, Ohio area were created to show possible areas of concern. The predictive maps showed a higher concentration of most elements in the Old West End area of Toledo. The findings were presented to the collaborating schools and in public forums to educate citizens about elevated heavy metal soil contamination in their area. They were given possible reasons for the contamination, explaining the harmful side effects of human activities on the soils. The health risks associated with the contamination were presented along with how to prevent health issues and how to take precautions around heavy metals.
Download or read book Multivariate Statistical and GIS based Approach to Identify Heavy Metal Sources in Urban Soils Evaluation of Temporal Variation and Associated Risk Assessment of Anthropogenic Heavy Metals Located in Birmingham and Richmond Upon Thames written by Elly Watson and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment on the Degree of Immobilization of Heavy Metals in Contaminated Urban Soils by Selected Phosphate Rocks of Different Particle Sizes written by M.E. Soltan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Master s Theses and Doctoral Dissertations in the Pure and Applied Sciences written by and published by . This book was released on 1973 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prevalence Fate and Co selection of Heavy Metals and Antibiotic Resistance Genes in Urban and Agricultural Soils written by Wei-Cheng Hung and published by . This book was released on 2020 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The widespread occurrence of antibiotic resistance and heavy metal are critical public health issues, posing global threats to human health. Antibiotics have been widely used in medical settings and in agriculture as growth promoters in livestock. A large fraction of antibiotics are excreted unchanged and can create selective environments for the emergence and proliferation of antibiotic resistance in receiving environmental compartments such as agricultural soils. Heavy metals, known as notable environmental stressors, promote the proliferation of antibiotic resistance by exerting co-selective pressure. More research is needed to manage both issues and to address the gap in the literature that exists with respect to their synergism. Through both field and laboratory microcosm research, the present study aims to investigate the prevalence, fate, co-occurrence, and interactions of antibiotic resistance genes (ARGs) and metal(loid)s in urban and agricultural soils. Los Angeles has a long history of lead (Pb) contamination due to automobile emissions, industrial processes, and Pb-containing paint. Although the amount of Pb coming from these sources has been significantly reduced, the legacy of Pb in Los Angeles continues to affect soil Pb concentrations in public parks. These concentrations were shown to be high, with 47 parks having one or more samples exceeding the California EPA guideline of 80 ppm. According to EPA LeadSpread model, soil Pb levels of 80-320 ppm can lead to an estimated increase of blood Pb level from 1 to 4 ug/dL. This study provides information that can be used to guide remediation decisions for authorities and for the construction of Pb-safe environments. While bioretention systems (biofilters) have been widely and effectively used to capture chemical pollutants from surface runoff, the effect of biofilters on both heavy metals and antibiotic resistance genes (ARGs) has been relatively understudied. A comprehensive survey of seasonal and regional ARGs and metal(loid)s is presented in urban biofilters in this study. Multiple effects of soil properties, bioavailable and total metal(loid)s on ARGs within biofilters were determined using multiple linear regression analysis. This study enhances our knowledge of ARG baseline levels for risk assessment and more strategic development of urban biofilters. Land application of biosolids is a common practice for recycling and reuse of biosolids. However, the effect of land application of biosolids on soil ARG concentrations still remains elusive. Results indicate that ARGs were higher in biosolids-amended soils than in the surrounding agricultural soils that had not received biosolids. Land-applied biosolids also create selective environments for the emergence and proliferation of ARGs in the environment. Spatial patterns of ARGs in soils also provided insight into the distribution of ARGs and their associations with types of land uses, ultimately leading to better management of soil ARGs.
Download or read book Heavy Metal Contaminants in Urban Gardens written by Tara Geiger and published by . This book was released on 2021 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The many benefits of gardens are well-documented, with such spaces especially important in urban settings where gardening can play a critical role in food access and community-building. However, benefits of urban gardening must be balanced with potential risks of exposure to contaminants that can be present in urban soils, including heavy metals. This research assessed concentrations of cadmium (Cd), copper (Cu), and lead (Pb) in gardens in Laramie, Wyoming, and evaluated gardeners’ knowledge and practices related to soil contamination. It also explored the effects of biochar, compost, and Miracle-Gro All Purpose Plant FoodTM on soil properties, availability of Pb in soil, and uptake by radish (Raphanus sativus, L.) using Pb-contaminated soil. Overall knowledge of soil contamination was low among gardeners. Sampled soils were below EPA Regional Screening Level maximums, however elevated Pb concentrations in residential gardens underscored the need for increased awareness. The greenhouse experiment showed biochar-amended soil reduced soil Pb availability and uptake by radish through effective sorption, but should be used in combination with other organic amendments to avoid soil nitrogen (N) deficiencies. A reduction in soil available Pb was also observed in compost-amended soil, likely attributable to plant uptake, as radishes grown with compost had significantly more Pb per plant than unamended and biochar-amended soils. Miracle-Gro increased both soil Pb availability and plant uptake. This study recommends that gardeners follow a set of formulated recommendations to minimize Pb exposure and reduce Pb uptake in plants used for human consumption.
Download or read book Heavy Metals in Urban Soils written by Yi-ting Huang and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is focused on the investigation of heavy metal contaminated urban soils (especially lead and zinc). Soil samples from greater Montreal area were collected. The concentrations of lead and zinc of some soil samples were at elevated levels, with the highest concentration being 2000 mg/kg (the EPA standard limits for both metals is 300 mg/kg at residential soils). The physical and chemical properties of soils, including soil particle size distribution, soil cation exchange capacity (CEC), soil specific surface area (SSA), soil permeability coefficients, were determined. The majority of soil particles in the samples were found to have the texture of fine sand (loamy and silty sands). Selective sequential extraction (SSE) was performed to understand the affinities of heavy metals toward various fractions of soil. The results indicate that lead has the highest affinity toward soil fraction of organic matter, while zinc has the highest affinity toward soil oxides. Soil column leaching tests were carried out. SSE, together with soil leaching tests, explains the mobility of heavy metals. It shows that zinc has a higher mobility in soils than lead. With the knowledge of heavy metal mobility in soils, the soil decontamination scheme can be planned.
Download or read book Heavy Metals in Soils written by Brian J. Alloway and published by Springer Science & Business Media. This book was released on 2012-07-18 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: This third edition of the book has been completely re-written, providing a wider scope and enhanced coverage. It covers the general principles of the natural occurrence, pollution sources, chemical analysis, soil chemical behaviour and soil-plant-animal relationships of heavy metals and metalloids, followed by a detailed coverage of 21 individual elements, including: antimony, arsenic, barium, cadmium, chromium, cobalt, copper, gold, lead, manganese, mercury, molybdenum, nickel, selenium, silver, thallium, tin, tungsten, uranium, vanadium and zinc. The book is highly relevant for those involved in environmental science, soil science, geochemistry, agronomy, environmental health, and environmental engineering, including specialists responsible for the management and clean-up of contaminated land.
Download or read book Proceedings of the 2022 International Conference on Mathematical Statistics and Economic Analysis MSEA 2022 written by Gaikar Vilas Bhau and published by Springer Nature. This book was released on 2022-12-22 with total page 1514 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an open access book. 2022 International Conference on Mathematical Statistics and Economic Analysis(MSEA 2022) will be held in Dalian, China from May 27 to 29, 2022. Based on probability theory, mathematical statistics studies the statistical regularity of a large number of random phenomena, and infers and forecasts the whole. Economic development is very important to people's life and the country. Through data statistics and analysis, we can quickly understand the law of economic development. This conference combines mathematical statistics and economic analysis for the first time to explore the relationship between them, so as to provide a platform for experts and scholars in the field of mathematical statistics and economic analysis to exchange and discuss.
Download or read book Environmental Risk Assessment of Soil Contamination written by Maria C. Hernandez Soriano and published by BoD – Books on Demand. This book was released on 2014-03-26 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil is an irreplaceable resource that sustains life on the planet, challenged by food and energy demands of an increasing population. Therefore, soil contamination constitutes a critical issue to be addressed if we are to secure the life quality of present and future generations. Integrated efforts from researchers and policy makers are required to develop sound risk assessment procedures, remediation strategies and sustainable soil management policies. Environmental Risk Assessment of Soil Contamination provides a wide depiction of current research in soil contamination and risk assessment, encompassing reviews and case studies on soil pollution by heavy metals and organic pollutants. The book introduces several innovative approaches for soil remediation and risk assessment, including advances in phytoremediation and implementation of metabolomics in soil sciences.
Download or read book Environmental Health Perspectives written by and published by . This book was released on 2004 with total page 1576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
