共查询到20条相似文献,搜索用时 0 毫秒
1.
Megan E. Gemmell Stefan Schmidt 《Environmental science and pollution research international》2013,20(9):6551-6562
As little is known about the potential risks associated with the use of microbiologically contaminated river water for recreation, irrigation, or domestic purposes, the Msunduzi River in Pietermaritzburg (KwaZulu-Natal, South Africa) was evaluated. In addition to pH, temperature, and chemical oxygen demand, quantitative and qualitative microbiological analyses were performed monthly for 13 months. These included aerobic plate counts, counts of aerobic and anaerobic sporeformers, most probable numbers for total and faecal coliforms and Escherichia coli and the detection of Salmonella spp., Staphylococcus aureus, and intestinal enterococci. Presumptive E. coli and S. aureus from river water samples were confirmed using PCR and additionally matrix-assisted laser desorption/ionisation-time of flight mass spectrometry (MALDI-TOF MS) for E. coli. Aerobic plate counts were above the South African Department of Water Affairs recommended guideline level for domestic use of 100 cfu/ml for all 13 months assessed. Faecal coliform (up to 63,000 MPN/100 ml) and E. coli (up to 7,900 MPN/100 ml) levels regularly exceeded stipulated limits for safe irrigation, domestic and recreational use. The presence of Salmonella spp., S. aureus, and intestinal enterococci frequently coincided with faecal coliform and E. coli levels above 1,000 MPN/100 ml. This illustrates the value of using guideline values for faecal coliforms and E. coli as indicators for the presence of potential pathogens. PCR and MALDI-TOF MS confirmation of E. coli were in agreement, thereby demonstrating the potential of MALDI-TOF MS as a suitable alternative. These data demonstrate that potential health risks are associated with using Msunduzi River water for irrigation and recreational or domestic purposes. 相似文献
2.
Su Po-Wen Lo Shang-Lien 《Environmental science and pollution research international》2022,29(38):57022-57029
Environmental Science and Pollution Research - Monitoring water at high spatial and temporal resolutions is important for maintaining water quality because the cost of pollution remediation is... 相似文献
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Ashraf Junaid Luo Liangqing Anser Muhammad Khalid 《Environmental science and pollution research international》2022,29(6):8438-8451
Environmental Science and Pollution Research - The effect of quality institutions on growth-environmental nexus is a generally ignored topic, especially in South Asia economies affiliated with the... 相似文献
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Environmental Science and Pollution Research - This study takes the anti-corruption campaign of the 18th CPC National Congress in China as an exogenous impact build a double difference (DID) model,... 相似文献
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Kholaif Moustafa Mohamed Nazief Haggag Kotb Xiao Ming 《Environmental science and pollution research international》2023,30(6):14365-14384
Environmental Science and Pollution Research - This study examines the relationship between uncertainty-fear toward COVID-19, green supply chain management (GSCM), and perceived service quality... 相似文献
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Environmental Science and Pollution Research - Cremation is commonly practiced around the world because it requires small space for the disposal of ashes. Among various options for ash disposal,... 相似文献
7.
Is the integration of hormesis and essentiality into ecotoxicology now opening Pandora's Box? 总被引:1,自引:1,他引:1
Kefford BJ Zalizniak L Warne MS Nugegoda D 《Environmental pollution (Barking, Essex : 1987)》2008,151(3):516-523
Hormesis and essentiality are likely real and common effects at the level of the individual. However, the widespread incorporation of stimulatory effects into applications of ecotoxicology requires the acceptance of assumptions, value judgements and possibly lowering of water/sediment quality standards. There is also currently little data appropriate for considering hormetic effects in the ecotoxicological context. Except perhaps in the case of fitting concentration-response curves, it is not clear that incorporation of hormetic and essentiality type responses into ecotoxicology is necessary. Furthermore, its incorporation presents considerable intellectual and practical changes for ecotoxicology and could have unanticipated consequences. 相似文献
8.
Cheng Chunyan Zhang Fei Shi Jingchao Kung Hsiang-Te 《Environmental science and pollution research international》2022,29(38):56887-56907
Environmental Science and Pollution Research - Good surface water quality is critical to human health and ecology. Land use determines the surface water heat and material balance, which cause... 相似文献
9.
Carreras-Sospedra M Dabdub D Rodríguez M Brouwer J 《Journal of the Air & Waste Management Association (1995)》2006,56(8):1184-1195
This study evaluates air quality model sensitivity to input and to model components. Simulations are performed using the California Institute of Technology (CIT) airshed model. Results show the impacts on ozone (O3) concentration in the South Coast Air Basin (SCAB) of California because of changes in: (1) input data, including meteorological conditions (temperature, UV radiation, mixing height, and wind speed), boundary conditions, and initial conditions (ICs); and (2) model components, including advection solver and chemical mechanism. O3 concentrations are strongly affected by meteorological conditions and, in particular, by temperature. ICs also affect O3 concentrations, especially in the first 2 days of simulation. On the other hand, boundary conditions do not significantly affect the absolute peak O3 concentration, although they do affect concentrations near the inflow boundaries. Moreover, predicted O3 concentrations are impacted considerably by the chemical mechanism. In addition, dispersion of pollutants is affected by the advection routine used to calculate its transport. Comparison among CIT, California Photochemical Grid Model (CALGRID), and Urban Airshed Model air quality models suggests that differences in O3 predictions are mainly caused by the different chemical mechanisms used. Additionally, advection solvers contribute to the differences observed among model predictions. Uncertainty in predicted peak O3 concentration suggests that air quality evaluation should not be based solely on this single value but also on trends predicted by air quality models using a number of chemical mechanisms and with an advection solver that is mass conservative. 相似文献
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Venkidasamy Baskar Subramanian Umadevi Samynathan Ramkumar Rajakumar Govindasamy Shariati Mohammad Ali Chung Ill-Min Thiruvengadam Muthu 《Environmental science and pollution research international》2021,28(6):6289-6301
Environmental Science and Pollution Research - Organopesticides (OPs) are a group of various synthetic chemicals prevalently used in agriculture and homestead plantations. OPs were originally... 相似文献
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Kholaif Moustafa Mohamed Nazief Haggag Kotb Ming Xiao Moosa Anitha David Kashosi Gad 《Environmental science and pollution research international》2022,29(12):17117-17131
Environmental Science and Pollution Research - Based on both the “stakeholder” and “cognitive” theories, this study shed light on the optimistic side of the COVID-19... 相似文献
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Majeed Muhammad Tariq Yu Zhiyuan Maqbool Adnan Genie Mesfin Ullah Sana Ahmad Waheed 《Environmental science and pollution research international》2021,28(31):41912-41921
Environmental Science and Pollution Research - This empirical study investigates the dynamic effects of economic freedom on economic growth and air quality for Pakistan over the period... 相似文献
15.
Despite the popularity of tourism and recreation in the Andes in South America and the regions conservation value, there is limited research on the ecological impacts of these types of anthropogenic use. Using a systematic quantitative literature review method, we found 47 recreation ecology studies from the Andes, 25 of which used an experimental design. Most of these were from the Southern Andes in Argentina (13 studies) or Chile (eight studies) with only four studies from the Northern Andes. These studies documented a range of impacts on vegetation, birds and mammals; including changes in plant species richness, composition and vegetation cover and the tolerance of wildlife of visitor use. There was little research on the impacts of visitors on soils and aquatic systems and for some ecoregions in the Andes. We identify research priorities across the region that will enhance management strategies to minimise visitor impacts in Andean ecosystems.
Electronic supplementary material
The online version of this article (doi:10.1007/s13280-014-0550-7) contains supplementary material, which is available to authorized users. 相似文献16.
Majeed Muhammad Tariq Yu Zhiyuan Maqbool Adnan Genie Mesfin G. Ullah Sana Ahmad Waheed 《Environmental science and pollution research international》2021,28(31):41922-41922
Environmental Science and Pollution Research - A Correction to this paper has been published: https://doi.org/10.1007/s11356-021-13968-6 相似文献
17.
Islam Md.Monirul Ali Md.Idris Ceh Brian Singh Sanjeet Khan Muhammad Kamran Dagar Vishal 《Environmental science and pollution research international》2022,29(23):34231-34247
Environmental Science and Pollution Research - Energy consumption for sustainable development has become a crucial issue in recent years. The anthropogenic effects of traditional energy sources... 相似文献
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Sediment quality guidelines (SQGs) assess the ability of bottom sediment to sustain healthy infauna and water quality guidelines (WQGs) provide protection for a designated percentage of aquatic species. Filter-feeding marine species, e.g. oysters and mussels, acquire food from particles in the water column and protection of these animals is not provided by SQGs or WQGs. The current work investigated the relationship between metal (Cu, Zn) concentrations in total and fine-fraction (<62.5 μm) surficial sediment digested in a range of acids and chelating agents and oyster tissue metal concentrations. A strong correlation between oyster tissue Cu and Zn concentrations and fine-fraction surficial sediment digested in 1 M HCl provided a sedimentary guideline which predicted tissue metal concentrations in oysters and established a level (<45 μg g−1 and <1000 μg g−1, respectively) for protecting oysters from exceeding human consumption levels (70 μg g−1 and 1000 μg g−1, respectively). 相似文献
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Liu Dong Xie Yuantao Hafeez Muhammad Usman Ahmed 《Environmental science and pollution research international》2022,29(20):29746-29755
Environmental Science and Pollution Research - This study examines the role of financial inclusion on the environment-economic performance in the top five Asian emerging economies. The data used... 相似文献
20.
Rebecca L. Curtis 《Environmental Forensics》2014,15(4):293-295
Gold (Au) accounts for only 0.004 g/ton of the earth's crust and is the most desired element. With an average annual world production of approximately 2,500 tons, the current methods of Au mining in developing countries cause major environmental issues. These issues vary from deforestation to cyanide and mercury (Hg) contamination. This article presents several cases of environmental catastrophes caused by Au mining in different regions of the world (Africa, the Middle East, Eastern Europe, and South America). It discusses the currently available processes for the large-scale extraction of metallic Au grains and supports the need for an alternative sustainable process. 相似文献