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Chemical, biological, and ecotoxicological assessment of pesticides and persistent organic pollutants in the Bahlui River, Romania 总被引:1,自引:0,他引:1
Mariana Neamtu Ioan M. Ciumasu Naela Costica Mihai Costica Magda Bobu Mircea N. Nicoara Cezar Catrinescu Kristin Becker van Slooten Luiz F. De Alencastro 《Environmental science and pollution research international》2009,16(Z1):76-85
Background, aim, and scope
Current knowledge on environmental impacts of industrial activities in Romania, particularly persistent organic pollutants (POPs), indicates that environmental standards of the European Union are not systematically met. In our study area, additional sources of POPs are agriculture and domestic wastes. Very scarce information is available upon environmental contaminations and effects. In the present study, we investigated the chemical pollution and their eventual impact on the ecosystem by measuring POPs and by using biological indicators of pollution. 相似文献3.
F. Pricope Ştefănescu G. Tiţescu I. Cărăuş D. Ureche 《Environmental Chemistry Letters》2003,1(2):149-151
During the artificial reproduction of salmonides, the fecundity can be increased either by improving the viability of spermatozoa,
or by extending the time period during which a roe micropile remains open, thus allowing its fecundation. Practically, this
can be achieved by the use of some fertilising techniques suitable for fish species. Here, we show that the reproduction of
rainbow trout in a 1:1 solution of deuterium-depleted water and distilled water led to a significant increase in survival
of roes during their embryonic development. Moreover, the addition of glucose and fructose into the deuterium-depleted fertilising
solutions led to a further increase in roe survival during embryonic development. The increase in survival is mainly explained
by an increase in the motility of spermatozoa. 相似文献
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A. Pederzoli M. Mircea S. Finardi A. di Sarra G. Zanini 《Atmospheric environment (Oxford, England : 1994)》2010,44(34):4181-4190
Italy is frequently affected by Saharan dust intrusions, which result in high PM10 concentrations in the atmosphere and can cause the exceedances of the PM10 daily limits (50 μg m?3) set by the European Union (EU/2008/50). The estimate of African dust contribution to PM10 concentrations is therefore a key issue in air quality assessment and policy formulation. This study presents a first identification of Saharan dust outbreaks as well as an estimate of the African dust contribution to PM10 concentrations during the period 2003–2005 over Italy. The identification of dust events has been carried out by looking at different sources of information such as monitoring network observations, satellite images, ground measurements of aerosol optical properties, dust model simulations and air mass backward trajectory analysis. The contribution of Saharan dust to PM10 monthly concentrations has been estimated at seven Italian locations. The results are both spatially (with station) and temporally (with month and year) variable, as a consequence of the variability of the meteorological conditions. However, excluding the contribution of severe dust events (21st February 2004, 25th–28th September 2003, 23rd–27th March 2005), the monthly contribution of dust varies approximately between 1 μg m?3 and 10 μg m?3 throughout year 2005 and between 1 μg m?3 and 8 μg m?3 throughout year 2003. In 2004 the dust concentration is lower than 2003 and 2005 (<5 μg m?3 at all sites). The reduction in the number of daily exceedances of the limit value (50 μg m?3) after subtraction of the dust contribution is also calculated at each station: it varies with station between 20% and 50% in 2005 and between 5% and 25% in 2003 and 2004. 相似文献
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Casadei Stefano Peppoloni Francesco Ventura Flaminia Teodorescu Razvan Dunea Daniel Petrescu Nicolae 《Environmental science and pollution research international》2021,28(21):26488-26499
Environmental Science and Pollution Research - In many countries, water supplies are limited and must be managed for different uses. Providing additional resources for irrigation can be an... 相似文献
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Carmen Lidia Chiţescu Anca Ioana Nicolau Paul Römkens H. J. Van Der Fels-Klerx 《Journal of environmental science and health. Part. B》2013,48(7):457-467
Use of pharmaceuticals in animal production may cause an indirect route of contamination of food products of animal origin. This study aimed to assess, through mathematical modelling, the transfer of pharmaceuticals from contaminated soil, through plant uptake, into the dairy food production chain. The scenarios, model parameters, and values refer to contaminants in emission slurry production, storage time, immission into soil, plant uptake, bioaccumulation in the animal's body, and transfer to meat and milk. Modelling results confirm the possibility of contamination of dairy cow's meat and milk due the ingestion of contaminated feed by the cattle. The estimated concentration of pharmaceutical residues obtained for meat ranged from 0 to 6 ng kg?1 for oxytetracycline, from 0.011 to 0.181 μg kg?1 for sulfamethoxazole, and from 4.70 to 11.86 μg kg?1 for ketoconazole. The estimated concentrations for milk were: zero for oxytetracycline, lower than 40 ng L?1 for sulfamethoxazole, and from 0.98 to 2.48 μg L?1 for ketoconazole. Results obtained for the three selected pharmaceuticals indicate a minor risk for human health. This study showed that supply chain modelling could be an effective tool in assessing the indirect contamination of feedstuff and animal products by residues of pharmaceuticals. The model can easily be adjusted to other contaminants and supply chain and, in this way, present a valuable tool to underpin decision making. 相似文献
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Alina M. Petrescu Virgil Paunescu 《Journal of environmental science and health. Part. B》2019,54(6):498-504
The present study attempted to evaluate the carcinogenicity of natural phenolic compounds with previously demonstrated antifungal activity, using a computational structure–cytotoxicity approach, namely the quantum structure cytotoxicity relationship model. The cytotoxicity of 15 phenolic compounds with antiviral activity 96?h after treatment was studied using the AdmetSAR computational program. Per the EPA classification, four of the investigated compounds would be included in the second cytotoxicity category, four in the third category, and six showed no toxicity, rendering the studied natural phenolic compounds much less toxic to aquatic life than synthetic pesticides, the organophosphorus compounds, which mostly fall into the first and second categories of toxicity. 相似文献
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Neamtu Mariana Ciumasu Ioan M. Costica Naela Costica Mihai Bobu Magda Nicoara Mircea N. Catrinescu Cezar van Slooten Kristin Becker De Alencastro Luiz F. 《Environmental science and pollution research international》2009,16(1):76-85