environmental pollution Dotaz Zobrazit nápovědu
Industrial sites affected by anthropogenic contamination, both past and present-day, commonly have intricate pollutant patterns, and source discrimination can be thus highly challenging. To this goal, this paper presents a novel approach combining multivariate statistics and environmental forensic techniques. The efficiency of this methodology was exemplified in a severely polluted estuarine area (Avilés, Spain), where factor analysis and clustering were performed to identify sub-areas with distinct geochemical behaviour. Once six clusters were defined and a pollution index applied, forensic tools revealed that the As speciation, Pb isotopes, and PAHs molecular ratios were useful to categorise the cluster groups on the basis of distinct pollution sources: Zn-smelting, coaly particles and waste disposal. Overall, this methodology offers valuable insight into pollution sources identification, which can be extended to comparable scenarios of complexly polluted environmental compartments. The information gathered using this approach is also important for the planning of risk assessment procedures and potential remediation strategies.
- Klíčová slova
- Arsenic speciation, Lead isotopes, Pollution sources, Polycyclic aromatic hydrocarbons, Toxic elements,
- MeSH
- hodnocení rizik MeSH
- látky znečišťující půdu * analýza MeSH
- monitorování životního prostředí MeSH
- polycyklické aromatické uhlovodíky * analýza MeSH
- průmyslový odpad analýza MeSH
- těžké kovy * analýza MeSH
- znečištění životního prostředí MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- látky znečišťující půdu * MeSH
- polycyklické aromatické uhlovodíky * MeSH
- průmyslový odpad MeSH
- těžké kovy * MeSH
- Klíčová slova
- PFAAs, chemical pollution, environmental persistence,
- MeSH
- chemické látky znečišťující vodu * analýza MeSH
- fluorokarbony * analýza MeSH
- kyseliny alkansulfonové * analýza MeSH
- monitorování životního prostředí MeSH
- znečištění životního prostředí MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- chemické látky znečišťující vodu * MeSH
- fluorokarbony * MeSH
- kyseliny alkansulfonové * MeSH
Adequate protection of the environment is one of the hot spots of concern for all sectors of society due to severe environmental pollution. The solution to this issue is friendly management of the environment. With the rapid growth of Chinese Manufacturing SMEs for economic development, environmental pollution and abuse of resources are arising. To resolve these issues, Chinese manufacturing SMEs are accelerating the implementation of green innovation in their industries. However, it is a complex task that involves enterprise, government, and social considerations. Therefore, it is essential to identify the green drivers for this implementation. With a focus on China's current situation from previous research and views from experts, this study aims to investigate how Chinese Manufacturing Small and Medium-sized Enterprises (SMEs) are responding to resource misuse and environmental pollution by implementing green innovation, emphasising the role of artificial intelligence (AI) in improving environmental performance. This study primarily looks into the factors that influence the adoption of green innovations by analysing the growth paths of Chinese SMEs operating in highly polluting industries over a longer time frame than five years. Artificial Intelligence is a valuable tool for solving the issues of ecological degradation. A quantitative method has been implemented for the Chinese companies' samples from the deeply polluting industries for more than five years. The findings of this paper advise that the average board size, the governing board meetings, and organizational performance are positively connected with the Chinese firms' environmental process. Board independence and diversity of gender have irrelevant associations with ecological performance. A convenient threshold regression model has been used to accumulate the respondents' data. It also reveals that larger board sizes and more frequent governing board meetings are positively associated with improved environmental performance among these firms. The findings state the critical implications for the firm executives, policymakers, environmental activists, and regulators. This result supports the insight drained from the resource dependence, stakeholder, firm agency, and legitimacy theories.
- Klíčová slova
- Artificial intelligence, China SMEs, Environmental pollution, Environmental practices, Governance, Green environment,
- MeSH
- umělá inteligence MeSH
- zachování přírodních zdrojů * metody MeSH
- znečištění životního prostředí * prevence a kontrola MeSH
- zpracovatelský průmysl MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Čína MeSH
Bioaccumulation of cadmium, chromium, copper, manganese, nickel, lead and zinc in small terrestrial rodents - voles and their cestode parasite Paranoplocephala dentata was studied. Contents of Pb, Mn, Ni and Zn in the parasite were found to be higher than in the kidney and liver of the parasitized animals. Lead level in the cestode was 37 fold higher than in the liver of the infected rodents. Bioaccumulation factors of zinc, nickel and manganese in the cestode are mostly in the range from 2 to 4.5. Considering the different contents of manganese and zinc in livers of non-parasitized and parasitized rodents, kidney tissue was found to be more reliable than liver as an indicator of environmental pollution by manganese and zinc; the kidneys of parasitized animals showed no significant change in the concentrations of those elements that are accumulated in the cestode.
- MeSH
- Arvicolinae metabolismus parazitologie MeSH
- cestodózy metabolismus veterinární MeSH
- fyziologický stres MeSH
- látky znečišťující životní prostředí metabolismus MeSH
- monitorování životního prostředí metody MeSH
- těžké kovy metabolismus MeSH
- znečištění životního prostředí statistika a číselné údaje MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- látky znečišťující životní prostředí MeSH
- těžké kovy MeSH
In recent years, monitoring of vitamin D levels and possible use of supplementation is gaining attention. Numerous studies showed low levels of vitamin D in winter months followed by improvement during summer. These changes are mostly dependent on the level of sun exposure, but also on geographical location, genetic factors, social-economic status, quality of nutrition and environmental pollution. In this observation we found significant decrease in vitamin D levels in populations exposed to extreme environmental pollution in area of central Europe. This region is known for extreme burden from microparticles originating in chemical industry, surface coal mining and cold-based power stations. Vitamin D levels in all patients was determined by ELISA. Using 540 patients in our department of clinical immunology and allergology we measured the levels of vitamin D in 2016 to 2021 period. In only 4 patients (0.74 %) we found vitamin D levels higher than 30 ng/ml. The curve of observed values does not reflect dependency on sun exposure and does not change during the year. We discuss the effect of environmental contaminants, lifestyle and economic and social factors. From our observations, we propose to directly supplement population with vitamin D, particularly children and seniors. From our observations, we propose to directly supplement population with vitamin D, particularly children and seniors.
- Klíčová slova
- Pollution, environment, health risk, vitamin, vitamin D,
- MeSH
- dítě MeSH
- ELISA MeSH
- lidé MeSH
- vitamin D * MeSH
- vitaminy * MeSH
- znečištění životního prostředí MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Evropa MeSH
- Názvy látek
- vitamin D * MeSH
- vitaminy * MeSH
Monitoring of personal exposure of population from environmental pollution is a very complicated process. There are many different pollutants in environment in very low concentrations and their distribution is non-homogenous. To measure these pollutants is not often feasible or possible due to technical problems. On the other side these can influence the health status of inhabitants by the way of a long time exposition by low doses. In our work we studied an incidence of the cancer of colon and rectum in rural area of Trnava district during the years 1986-1995. These are the most frequent types of cancer in our district-13.4%, incidence rate is 27.5 per 100,000 inhabitants. The standardised incidence ratio (observed/expected cases) were calculated for all villages, including statistical parameters. The population in this small area (1390 km2) is relatively stabile from point of view of migration and nutritional habits. The urban area consisting from five towns was excluded from analysis because the life style and nutritional habits of people living in towns and villages are different. These suppositions enabled to concentrate our attention to the study of environmental factors which can influence development of the colorectal cancer. The SIR's were correlated with time of public drinking water supply, surface water quality, location of waste dumps, and time of gas heating using as kind of house heating. Positive and statistically significant correlation's were found between SIR of the colorectal cancer and waste dump location for females and weaker for surface water and SIR for males. Statistically significant elevation of SIR both for males and females were found in one village. Ecological design of study did not allow to study confounders, yet served enough information for preparation of analytical studies and public health decision-making process on local level.
- MeSH
- epidemiologické monitorování MeSH
- incidence MeSH
- interval spolehlivosti MeSH
- kolorektální nádory epidemiologie etiologie MeSH
- látky znečišťující životní prostředí škodlivé účinky MeSH
- lidé MeSH
- lineární modely MeSH
- monitorování životního prostředí MeSH
- pilotní projekty MeSH
- rizikové faktory MeSH
- venkovské obyvatelstvo MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Slovenská republika epidemiologie MeSH
- Názvy látek
- látky znečišťující životní prostředí MeSH
Samples of lichens, snow and particulate matter (PM10, 24 h) are used for the source identification of air pollution in the heavily industrialized region of Ostrava, Upper Silesia, Czech Republic. An integrated approach that uses different environmental samples for metal concentration and Pb isotope analyses was applied. The broad range of isotope ratios in the samples indicates a combination of different pollution sources, the strongest among them being the metallurgical industry, bituminous coal combustion and traffic. Snow samples are proven as the most relevant indicator for tracing metal(loid)s and recent local contamination in the atmosphere. Lichens can be successfully used as tracers of the long-term activity of local and remote sources of contamination. The combination of PM10 with snow can provide very useful information for evaluation of current pollution sources.
- Klíčová slova
- Atmospheric contamination, Lichens, Metals, Pb isotopes, Snow,
- MeSH
- atmosféra chemie MeSH
- izotopy analýza MeSH
- kovy analýza MeSH
- látky znečišťující vzduch analýza MeSH
- lišejníky metabolismus MeSH
- monitorování životního prostředí metody MeSH
- pevné částice analýza MeSH
- průmysl MeSH
- sníh chemie MeSH
- uhlí analýza MeSH
- znečištění ovzduší analýza MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- izotopy MeSH
- kovy MeSH
- látky znečišťující vzduch MeSH
- pevné částice MeSH
- uhlí MeSH
Daily used chemicals, sooner or later reach our soil in the form of the original product or a by-product. The relationship between the chemical compound and organisms varies greatly and therefore cannot be demonstrated solely by chemical investigations. Bioassays are used in order to predict potential dangers.
- MeSH
- biotest * MeSH
- látky znečišťující životní prostředí analýza MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- látky znečišťující životní prostředí MeSH
Tree rings have been reliably used as an environmental proxy over the past decades for environmental reconstructions, simulations and forecasting. In our study, we investigated whether tree-ring chronologies are impacted by pollution. We chose sites in the Krušné hory and the Krkonoše Mountains in the Czech Republic which have a known history of pollution. We sampled Norway spruce (Picea abies [L.] Karst) in both ranges and compared their chronologies. We found no significant difference in the overall radial growth in the chronologies from both regions. However, we observed an increased heterogeneity in the growth of trees from the 1970s till the 1990s. Coherently, a severe reduction in tree growth from the late 1970s and a recovery towards the early 1990s was evident. We collected and analysed soil samples for pH and exchangeable element concentrations. All seven sampling sites' soils were strongly acidic (pHCaCl2 = 3.3 ± 0.4). The average soil base saturation at Krušné hory was higher than at Krkonoše (39% versus 12%), likely due to more intensive liming. Further, we compared these chronologies to other sites in Europe. Analysing 89 sites, we found that most (9 out of 14) of the sites with significantly reduced radial tree growth were located within the former 'Black Triangle', an area which was subjected to heavy industrialisation and pollution from the 1960s to the 1990s. Atmospheric sulphur deposition was found to negatively affect radial tree-growth, while limited quantities of oxidised nitrogen appeared to have a positive effect. Our results are consistent with previous research, indicating that atmospheric SO2 pollution and subsequent acid fog and rime have led to a reduction in annual radial tree growth across the Black Triangle.
- Klíčová slova
- Environmental signals, Forests, Krkonoše mountains, Krušné hory, Picea abies [L.] Karst, Pollution, Tree rings,
- MeSH
- látky znečišťující půdu analýza MeSH
- monitorování životního prostředí * MeSH
- půda chemie MeSH
- smrk * růst a vývoj účinky léků MeSH
- stromy * růst a vývoj MeSH
- znečištění životního prostředí * MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Evropa MeSH
- MeSH
- látky znečišťující půdu * analýza MeSH
- látky znečišťující vzduch * analýza MeSH
- monitorování životního prostředí MeSH
- půda MeSH
- technologie MeSH
- voda MeSH
- znečištění ovzduší * MeSH
- znečištění vody MeSH
- znečištění životního prostředí MeSH
- Publikační typ
- úvodníky MeSH
- Názvy látek
- látky znečišťující půdu * MeSH
- látky znečišťující vzduch * MeSH
- půda MeSH
- voda MeSH