Cogent Environmental Science最新文献_第10页

Lead exposure through consumption of small game harvested using lead-based ammunition and the corresponding health risks to First Nations in Alberta, Canada 加拿大阿尔伯塔省第一民族因食用使用含铅弹药收获的小型野味而暴露的铅及其相应的健康风险

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1557316

Claire McAuley, Christopher Ng, C. McFarland, A. Dersch, B. Koppe, Darryel R. Sowan

引用次数: 3

Assessment of sugarcane grown in wetlands polluted with wastewater 废水污染湿地种植甘蔗的评价

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1455277

Agnes Oppong, D. Azanu, L. Ofori

{"title":"Assessment of sugarcane grown in wetlands polluted with wastewater","authors":"Agnes Oppong, D. Azanu, L. Ofori","doi":"10.1080/23311843.2018.1455277","DOIUrl":"https://doi.org/10.1080/23311843.2018.1455277","url":null,"abstract":"Abstract Wastewater effluents directly discharged into nearby stream are eventually used to irrigate plants like sugarcane in Ghana. In this study, 24 triplicates sugarcane stems (sugarcane juice was extracted), 24 triplicates soil samples and 8 triplicates water samples were collected from sugarcane farms in four communities in Ashanti region of Ghana. Two of the communities were exposed to wastewater while the other two without wastewater contamination served as control. Metals (Pb, Cd, Cr, Cu, and Fe) concentration were determined in the digested samples using Spectra AA 220 flame atomic absorption spectrometer. The Pb concentration in all sugarcane juice samples ranged between 12.65 and 145.0 μg/L. The mean Cu concentration of the sugarcane juice samples varied between 11.28 and 156.00 μg/L. In general, there were decrease in metals investigated in sugarcane juice as you move away from the stream. However, the reduction was more pronounced in the hotspot sampling areas than control sampling areas. The EDI value was 9.76 × 10−4, 2.94 × 10−5, 1.09 × 10−3, and 9.07 × 10−3 (mg/kg-day) for Pb, Cd, Cu, and Fe, respectively. Mean hazard quotient (HQ) for the metals studied ranged from 0.036 (Fe) to 0.286 (Pb). The results of this study indicate that sugarcane is able to grow in soils where some metals are accumulated. High levels of metals were pronounced in sugarcane originating from wastewater polluted soils as those considered in this study. The consumption of normal quantity of sugarcane juice may not present detrimental health concerns through a lifetime based on the metals contents alone.","PeriodicalId":45615,"journal":{"name":"Cogent Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23311843.2018.1455277","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42309081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Oil development in the grasslands: Saskatchewan’s Bakken formation and species at risk protection 草原上的石油开发:萨斯喀彻温省的巴肯地层和濒危物种保护

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1443666

A. Olive

引用次数: 10

Examining legal and regulatory barriers to climate change adaptation in the coastal zone of the United States 审查美国沿海地区适应气候变化的法律和监管障碍

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1491096

Chad J. McGuire

{"title":"Examining legal and regulatory barriers to climate change adaptation in the coastal zone of the United States","authors":"Chad J. McGuire","doi":"10.1080/23311843.2018.1491096","DOIUrl":"https://doi.org/10.1080/23311843.2018.1491096","url":null,"abstract":"Abstract This paper presents an analysis of key legal and regulatory instruments in the United States that impact climate adaptation planning. The analysis is framed within a social-institutional context, meaning the legal-regulatory environment is viewed from the perspective of the practices and norms that are created through existing laws and policies. Those norms and practices are then compared to current best practices for coastal climate adaptation to determine if and where divergence between recommended best practices and existing policy structures occurs. The results of this analysis suggest key policy instruments cumulatively act as barriers to adopting climate change assessment recommendations in coastal regions. The main causes for this disconnect between information and action seem to be historical path dependence, clear counter-incentives favoring coastal development, and multiple narratives of climate change, all of which diminish a unified public demand for coastal adaptation. Enumerated lessons presented from this analysis can be used as conceptual starting points when thinking about translating assessments of climate change into public action. In particular, the social-institutional framework provides an analytical construct for gaining insight into how existing legal and regulatory instruments influence adoption of proposed adaptation strategies, including highlighting when divergence between existing and proposed policies occurs.","PeriodicalId":45615,"journal":{"name":"Cogent Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23311843.2018.1491096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46262174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Pollution status of shooting range soils from Cd, Cu, Mn, Ni and Zn found in ammunition 弹药中Cd、Cu、Mn、Ni和Zn对射击场土壤的污染状况

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1528701

Pogisego Dinake, Onneetse Maphane, Karabo Sebogisi, Obed Kamwi

{"title":"Pollution status of shooting range soils from Cd, Cu, Mn, Ni and Zn found in ammunition","authors":"Pogisego Dinake, Onneetse Maphane, Karabo Sebogisi, Obed Kamwi","doi":"10.1080/23311843.2018.1528701","DOIUrl":"https://doi.org/10.1080/23311843.2018.1528701","url":null,"abstract":"Abstract Evaluation of concentration of heavy metals found in shooting range soil is important in assessing the pollution risk posed to biota. Soil samples from five shooting ranges found in Botswana were used in this study. All the five shooting ranges accumulated high concentration of Cu ranging from 67.4 ± 0.05 mg/kg to 1569 ± 13 mg/kg followed by Mn (25.9 ± 0.1–953.8 ± 2.8 mg/kg). Pollution risk indices were used to quantify the environmental pollution risk posed by the different heavy metals studied. It was established that even though all the five shooting ranges recorded low concentrations of Cd, this metal still posed the highest pollution risk than any other metal with S/P shooting range recording the highest potential ecological risk index (peri) of 8141 (CCd ~ 3.6 ± 0.03 mg/kg) and TAB at PERI of 3507 (CCd ~ 4.9 ± 0.02 mg/kg). Similarly, contamination factor (CF) value of 271 for Cd was measured at S/P shooting range indicating high contamination from Cd. Pollution risk indices were able to establish that even though concentration of Cd accumulated in the soil was low this heavy metal still posed highest pollution risk to biota. Continuous assessment of the pollution status of these shooting ranges should be carried out in order to establish appropriate best shooting range management practices and remedial strategies.","PeriodicalId":45615,"journal":{"name":"Cogent Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23311843.2018.1528701","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47711840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Early detection of chloroform hot spots in the Montevideo drinking water network 蒙得维的亚饮用水网络中氯仿热点的早期检测

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1516501

Marcel Achkar Borrás, G. Seoane, Mariana Gómez-Camponovo, Eleuterio Umpiérrez Vazquez, N. Perez

{"title":"Early detection of chloroform hot spots in the Montevideo drinking water network","authors":"Marcel Achkar Borrás, G. Seoane, Mariana Gómez-Camponovo, Eleuterio Umpiérrez Vazquez, N. Perez","doi":"10.1080/23311843.2018.1516501","DOIUrl":"https://doi.org/10.1080/23311843.2018.1516501","url":null,"abstract":"Abstract The use of chlorine to disinfect water produces a series of by-products, particularly trihalomethanes. This is important given that there is a recognized association with different types of cancer after prolonged exposure, as well as with probable adverse effects on reproduction, especially in relation to offspring. The concentrations of these organic compounds vary greatly depending on the season and the conditions involved in providing water for consumption. This study was aimed at determining the geographic distribution pattern of chloroform in the city of Montevideo, and correlating that with the characteristics of the water distribution network. A total of 400 samples were taken from a sampling network between 2009 and 2015. Chloroform was identified by analyzing these samples using the headspace gas chromatography/mass spectrometry method. Data regarding piping length, diameter, and type of material were obtained. A geographic information system was constructed and hot spots were analyzed using the Getis–Ord Gi* statistic. A neighborhood piping density index was also proposed. The analysis found two zones in the city: hot and cold spots. The proposed index showed an increase in the Gi* statistic as the neighborhoods’ piping density increased, with a strong correlation. In addition, the highest Gi* statistic values corresponded to larger amounts of iron piping in neighborhoods. This work was able to determine that the hot spots were associated with the piping density in the neighborhoods as well as with the type of piping material, particularly iron.","PeriodicalId":45615,"journal":{"name":"Cogent Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23311843.2018.1516501","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48534944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Urban dwellers and solid waste management plans: A case study of selected towns in Afar regional state, Ethiopia 城市居民和固体废物管理计划：埃塞俄比亚阿法尔州选定城镇的案例研究

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1524052

Metkel Aregay Gebreeyosus

{"title":"Urban dwellers and solid waste management plans: A case study of selected towns in Afar regional state, Ethiopia","authors":"Metkel Aregay Gebreeyosus","doi":"10.1080/23311843.2018.1524052","DOIUrl":"https://doi.org/10.1080/23311843.2018.1524052","url":null,"abstract":"Abstract The increase in quantity and composition of solid waste has come up with a necessity of effective measures to cope up with its negative impacts in our society. One possible measure, in this case, is the participation of the public as part of the solution. This study is aimed at the estimation of the non-market welfare gain as a result of proposed improved solid waste management plans for households in some selected towns of Afar region, Ethiopia using Contingent Valuation Method. The proposed improvements are presented by a scenario where the frequency, payment vehicle, and appropriate disposal mechanism were considered. Ordinary Least Square model with twelve variables for residential households and with nine variables for commercial households was estimated. We have notable differences between residential households and commercial households’ average willingness to pay for improvement in solid waste management. Generally, it was seen that solid waste management could also be source of income apart from the environmental benefits. The people can play a decisive role in solid waste management by sharing its costs.","PeriodicalId":45615,"journal":{"name":"Cogent Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23311843.2018.1524052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49511780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Wastewater treatment potential of Moringa stenopetala over Moringa olifera as a natural coagulant, antimicrobial agent and heavy metal removals 辣木作为天然混凝剂、抗菌剂和重金属去除剂的废水处理潜力

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1433507

Asaminew Abiyu, D. Yan, A. Girma, Xinshan Song, Hao Wang

引用次数: 20

Shifting practices: How the rise of rooftop solar PV has changed local government community engagement 转变实践：屋顶太阳能光伏的兴起如何改变了当地政府和社区的参与

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1481584

D. Meiklejohn, S. Bekessy, S. Moloney

{"title":"Shifting practices: How the rise of rooftop solar PV has changed local government community engagement","authors":"D. Meiklejohn, S. Bekessy, S. Moloney","doi":"10.1080/23311843.2018.1481584","DOIUrl":"https://doi.org/10.1080/23311843.2018.1481584","url":null,"abstract":"Abstract Australian local governments develop and deliver a range of community engagement programmes designed to reduce household-based greenhouse gas emissions. This article draws on practice theory to analyse how these programmes have changed over time in response to the rapid deployment of a domestic renewable energy technology: rooftop solar photovoltaic (PV). After outlining the practice “lens” used to analyse these practices, we draw on empirical research to examine traditional forms of climate change community engagement practice including meanings of leadership adopted by local governments. We note how these play out in the form of ambitious community-based greenhouse gas emissions reduction targets that favour technological responses to climate change which in turn has favoured the rise of rooftop solar PV, and how community engagement practices have changed as a result. We find that Australian local government climate change community engagement practices have experienced three distinct forms of performance. The first, what might be termed “traditional” climate change community engagement practices, rely upon individuals acting out of adherence to pro-social environmental values. The second highlights the technology of rooftop solar PV with its associated pro-individual motivations, such as financial benefit. The third form, which is currently emerging, positions local governments as “disruptors” of centralised energy systems mobilising rooftop solar PV amongst actors currently excluded from the solar revolution, such as renters, low income households and community energy groups. In extending the meanings of rooftop solar PV uptake beyond financial benefits to a shared response to climate change, local governments become active agents in mobilising community energy transitions.","PeriodicalId":45615,"journal":{"name":"Cogent Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23311843.2018.1481584","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46408236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Characterization of organochloride pesticides residues in sediments from the Cienaga Grande of the lower Sinú river of Colombia 哥伦比亚Sinú河下游Cienaga Grande沉积物中有机氯农药残留的表征

Cogent Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/23311843.2018.1436930

E. Lans-Ceballos, Amira C. Padilla-Jiménez, S. Hernández‐Rivera

{"title":"Characterization of organochloride pesticides residues in sediments from the Cienaga Grande of the lower Sinú river of Colombia","authors":"E. Lans-Ceballos, Amira C. Padilla-Jiménez, S. Hernández‐Rivera","doi":"10.1080/23311843.2018.1436930","DOIUrl":"https://doi.org/10.1080/23311843.2018.1436930","url":null,"abstract":"Abstract The levels of organochloride pesticides (OCPs) residues in sediment samples from four stations in the Cienaga Grande (swamp area) of the lower Sinú River in the Caribbean region and receiving run-offs from the Sinú River effluents in Córdoba, Colombia were investigated. Ninety-six composite samples of surface sediments covering a radius of 3 m were randomly collected using the “Van Veen” dredge technique and were subsequently analyzed for pesticide residues using a gas chromatograph equipped with an electron capture detector. A total of five OCPs residues, most of them persistent organic pollutants, were identified and quantified. Results showed that the concentrations of various pesticides in sediments were in the range of 2.85–7.05 ng/g for α-hexachlorocyclohexane (α-HCH), 0.26–2.31 ng/g for β-HCH, 0.59–7.57 ng/g for γ-HCH (lindane), 0.69–1.72 for aldrin, and 1.55–2.25 ng/g for heptachlor epoxide. Among the OCPs, the Σ-HCH (total positional isomers of HCH) was the dominant compounds in the Cienaga Grande sediments. The study concluded that most of the stations monitored in the Cienaga Grande areas were contaminated with OCPs associated with the accumulation of water run-off from surrounding areas arriving at the location during the winter time. This in turn implies that the increased pollution load is related to the discharge of wastewater and solid waste from various municipal centers and towns located about the Cienaga Grande.","PeriodicalId":45615,"journal":{"name":"Cogent Environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23311843.2018.1436930","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44082424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6