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71.
Kalugina Olga Vladimirovna Shergina Olga Vladimirovna Mikhailova Tatiana Alekseevna 《Environmental science and pollution research international》2020,27(18):22400-22413
Environmental Science and Pollution Research - Forest surveys were conducted in 2015–2018 on 12 sample plots (SPs), located in different districts of the city of Bratsk, a large industrial... 相似文献
72.
Tatiana Wuytack Kris Verheyen Karen Wuyts Fatemeh Kardel Sandy Adriaenssens Roeland Samson 《Environmental monitoring and assessment》2010,171(1-4):197-204
In this study, we assess the potential of white willow (Salix alba L.) as bioindicator for monitoring of air quality. Therefore, shoot biomass, specific leaf area, stomatal density, stomatal pore surface, and stomatal resistance were assessed from leaves of stem cuttings. The stem cuttings were introduced in two regions in Belgium with a relatively high and a relatively low level of air pollution, i.e., Antwerp city and Zoersel, respectively. In each of these regions, nine sampling points were selected. At each sampling point, three stem cuttings of white willow were planted in potting soil. Shoot biomass and specific leaf area were not significantly different between Antwerp city and Zoersel. Microclimatic differences between the sampling points may have been more important to plant growth than differences in air quality. However, stomatal pore surface and stomatal resistance of white willow were significantly different between Zoersel and Antwerp city. Stomatal pore surface was 20% lower in Antwerp city due to a significant reduction in both stomatal length (?11%) and stomatal width (?14%). Stomatal resistance at the adaxial leaf surface was 17% higher in Antwerp city because of the reduction in stomatal pore surface. Based on these results, we conclude that stomatal characteristics of white willow are potentially useful indicators for air quality. 相似文献
73.
Organochlorine concentrations in franciscana dolphins, Pontoporia blainvillei, from Brazilian waters
Lailson-Brito J Dorneles PR Azevedo-Silva CE Azevedo Ade F Vidal LG Marigo J Bertozzi C Zanelatto RC Bisi TL Malm O Torres JP 《Chemosphere》2011,84(7):882-887
Blubber samples were collected from ten franciscana dolphins either incidentally captured in fishing operations or stranded on São Paulo (SP) and Paraná (PR) states littoral, Southeastern and Southern Brazilian coast, respectively. Determination of PCB, DDT and HCB concentrations were performed by capillary gas chromatograph coupled to electron capture detector (ECD). ΣDDT, ΣPCB and HCB concentrations ranged from 264 ng g−1 to 5811 ng g−1 lipid, from 909 ng g−1 to 5849 ng g−1 lipid and from 10 ng g−1 to 61 ng g−1 lipid, respectively. Regarding DDTs, the distribution of the mean percentages decreased in the following order: p,p′-DDE > p,p′-DDD > p,p′-DDT. The ΣDDT/ΣPCB ratio varied between 0.27 and 0.42 in Northern and Central SP coast, while in Southern SP and PR coast the values were 1.6 and 1.9, respectively. Dissimilarities in ΣDDT/ΣPCB ratios point to different sources of organochlorine compounds to franciscana dolphins in the study area. Considering the endocrine disruptive action of organochlorine compounds, the concentrations found in franciscana dolphins from Brazilian waters may represent an additional obstacle to the conservation of this endangered cetacean species. 相似文献
74.
Fernando Llavador Colomer Enrique Mantilla Iglesias Tatiana Gómez Pérez Andreu Campos-Candel Caterina Coll Lozano 《Journal of the Air & Waste Management Association (1995)》2013,63(8):863-872
A monitoring program based on an indirect method was conducted to assess the approximation of the olfactory impact in several wastewater treatment plants (in the present work, only one is shown). The method uses H2S passive sampling using Palmes-type diffusion tubes impregnated with silver nitrate and fluorometric analysis employing fluorescein mercuric acetate. The analytical procedure was validated in the exposure chamber. Exposure periods of at least 4 days are recommended. The quantification limit of the procedure is 0.61 ppb for a 5-day sampling, which allows the H2S immission (ground concentration) level to be measured within its low odor threshold, from 0.5 to 300 ppb. Experimental results suggest an exposure time greater than 4 days, while recovery efficiency of the procedure, 93.0 ± 1.8%, seems not to depend on the amount of H2S collected by the samplers within their application range. The repeatability, expressed as relative standard deviation, is lower than 7%, which is within the limits normally accepted for this type of sampler. Statistical comparison showed that this procedure and the reference method provide analogous accuracy. The proposed procedure was applied in two experimental campaigns, one intensive and the other extensive, and concentrations within the H2S low odor threshold were quantified at each sampling point. From these results, it can be concluded that the procedure shows good potential for monitoring the olfactory impact around facilities where H2S emissions are dominant.
Implications: Passive samplers are very attractive tools to experimentally tackle a number of air pollution problems, especially those related to odor impact. Their small size and cost permit a denser sampling design and thus a more detailed spatial characterization than other techniques. On the other hand, the large inherent variability in passive sampler measures requires an uncertainty analysis of the chemical species and analytical procedures used. 相似文献
75.
The impact of synthetic pyrethroid and organophosphate sheep dip formulations on microbial activity in soil 总被引:2,自引:1,他引:1
Boucard TK McNeill C Bardgett RD Paynter CD Semple KT 《Environmental pollution (Barking, Essex : 1987)》2008,156(1):207-214
Sheep dip formulations containing organophosphates (OPs) or synthetic pyrethroids (SPs) have been widely used in UK, and their spreading onto land has been identified as the most practical disposal method. In this study, the impact of two sheep dip formulations on the microbial activity of a soil was investigated over a 35-d incubation. Microbial utilisation of [1-(14)C] glucose, uptake of (14)C-activity into the microbial biomass and microbial numbers (CFUs g(-1) soil) were investigated. In control soils and soils amended with 0.01% sheep dip, after 7d a larger proportion of added glucose was allocated to microbial biomass rather than respired to CO(2). No clear temporal trends were found in soils amended with 0.1% and 1% sheep dips. Both sheep dip formulations at 0.1% and 1% concentrations resulted in a significant increase in CFUs g(-1) soil and [1-(14)C] glucose mineralisation rates, as well as a decline in microbial uptake of [1-(14)C] glucose, compared to control and 0.01% SP- or OP-amended soils. This study suggests that the growth, activity, physiological status and/or structure of soil microbial community may be affected by sheep dips. 相似文献
76.
77.
Simulation of the influence of industrial wastewater on a municipal sewage treatment plant—a case study 总被引:1,自引:0,他引:1
Ákos Rédey Viola Somogyi József Ányos Endre Domokos Péter Thury Tatiana Yuzhakova 《Environmental science and pollution research international》2011,18(2):192-198
Purpose
Industrial wastewater flow caused operational difficulties in the wastewater treatment plant in Debrecen, Hungary. Bioaugmentation was successfully applied to maintain effluent quality in the periods when wastewater of high starch content was accepted, but, at the end of 2008, the nitrification capacity of the plant decreased considerably due to improperly pre-treated pharmaceutical wastewater. 相似文献78.
79.
Jan Weiss Andreas Stephan Tatiana Anisimova 《Journal of Environmental Planning and Management》2019,62(2):342-363
Using recent data on a cross-section of Swedish chemical and pulp and paper firms, this paper provides novel empirical insights into the Porter hypothesis. Well-designed environmental regulation can stimulate firms’ innovative capabilities, while at the same time generating innovation offsets that may both offset net compliance costs and yield a competitive edge over those firms that are not affected by such regulations. In doing so, we also test the alleged effectiveness of regulatory time strategies in stimulating innovation activities of regulated firms. We find evidence for the effectiveness of such well-designed regulations: announced rather than existing regulation induces innovation and some innovation offsets. Our results imply that empirical tests of the Porter hypothesis that do not account for its dynamic nature, and that do not measure well-designed regulations, might provide misleading conclusions as to its validity. 相似文献
80.
Tatiana M. Tsagaraki George PetihakisKostas Tsiaras George TriantafyllouManolis Tsapakis Gerasimos KorresGeorge Kakagiannis Constantin FrangoulisIoannis Karakassis 《Ecological modelling》2011,222(14):2512-2523
An ecosystem modelling approach was used in two areas of the Eastern Mediterranean in order to examine the effects of aquaculture on the ecology of the water column. Aquaculture expansion to meet demands of a growing population is followed by concerns about keeping impacts within socially acceptable limits. Primarily the study aimed at investigating the fate of nutrients from finfish culture and evaluating changes in chemical and biological characteristics of the water body. The model used, Aquaculture Integrated Model (AIM), is based on a complex generic biogeochemical model coupled to a 3D hydrodynamic model. Selected areas included a finfish farm in the Northern Aegean, Greece and an aquaculture development area in Vassiliko, Cyprus. Ecosystem effects were evaluated on the basis of scale and importance. Scenarios under different production levels and hydrodynamic conditions were explored at the sites. Model results showed that farm discharges are rapidly dispersed from their point source in addition to a tendency for effluents to accumulate at distances not normally associated directly with farming activity. The wide range of parameters available in the model helped identify parameters more likely to be affected by the farming activities. There was a satisfactory correlation between observed and predicted model outputs. This study demonstrates the importance of approaching aquaculture impacts at an ecosystem level and the utility of a modelling tool to this end. 相似文献