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排序方式: 共有115条查询结果,搜索用时 15 毫秒
1.
Norbert Gonzalez-Flesca Matthew S. Bates Veronique Delmas Vincenzo Cocheo 《Environmental monitoring and assessment》2000,65(1-2):59-67
Many VOC represent hazards to human health through chronic exposure. Recent European and world-wide legislation proposes limit values for ambient concentrations of these compounds. However, very little experimental data exists for true population exposure. In 1996, the European MACBETH initiative set out to measure population exposure to benzene in six European cities. This study details the French contribution to this program. Six campaigns were carried out, each comprising measurements at 100 outdoor sites and the participation of 50 non-smoking volunteers who wore personal samplers and had passive monitors installed in their homes. Iso-concentration maps were drawn for each campaign and the results showed that outdoor concentrations were significantly lower than indoors. Almost 75% of the volunteers were exposed to mean concentrations higher than the limit value of 5µgm3. It is demonstrated that personal exposure levels cannot be deduced simply by combining indoor and outdoor background concentrations. It is also shown that there is need for better knowledge of the contributions to overall exposure of outdoor microenvironments and the authors hope that future European directives will take this into account. 相似文献
2.
Innovative aspects of environmental chemistry and technology regarding air,water, and soil pollution
Katsoyiannis Ioannis A. Lammel Gerhard Samara Constantini Ernst Mathias Wenk Jannis Torretta Vincenzo Voutsa Dimitra Vollertsen Jes Bucheli Thomas D. Godbersen Levke Lambropoulou Dimitra Heath Ester Kallenborn Roland Giannakoudakis Dimitrios Deliyanni Eleni Bandosz Teresa J. Ražić Slavica Samanidou Viktoria Papa Ester Lacorte Silvia Katsoyiannis Athanasios 《Environmental science and pollution research international》2021,28(42):58958-58968
Environmental Science and Pollution Research - 相似文献
3.
4.
Antonio Bucci Vincenzo Allocca Gino Naclerio Giovanni Capobianco Fabio Divino Francesco Fiorillo Fulvio Celico 《环境科学学报(英文版)》2015,(1):131-138
The aim of the research was to evaluate, at site scale, the influence of freezing and freeze/thaw cycles on the survival of faecal coliforms and faecal enterococci in soil, in a climate change perspective. Before the winter period and during grazing, viable cells of faecal coliforms and faecal enterococci were detected only in the first 10 cm below ground, while,after the winter period and before the new seasonal grazing, a lower number of viable cells of both faecal indicators was detected only in some of the investigated soil profiles, and within the first 5 cm. Taking into consideration the results of specific investigations, we hypothesise that the non-uniform spatial distribution of grass roots within the studied soil can play an important role in influencing this phenomenon, while several abiotic factors do not play any significant role. Taking into account the local trend in the increase of air temperature, a different distribution of microbial pollution over time is expected in spring waters, in future climate scenarios. The progressive increase in air temperature will cause a progressive decrease in freeze/thaw cycles at higher altitudes, minimising cold shocks on microbial cells, and causing spring water pollution also during winter. 相似文献
5.
Colombo A Benfenati E Bugatti SG Celeste G Lodi M Rotella G Senese V Fanelli R 《Chemosphere》2011,85(11):1719-1724
Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDDs/Fs) were analyzed in samples of the emissions from a secondary aluminum smelter (ALS) and soil samples around the plant. The purpose was to estimate the impact of the emissions on the surrounding environment.PCDD/F soil concentrations were higher in the proximity of the plant, exceeding the limit adopted in Italy in soils for green areas and residential uses and the upper limit of several reference concentrations. The most contaminated sites were less than 500 m from the plant and the dioxin concentration with the distance from the ALS.Principal component analysis (PCA) showed that emissions from the ALS were the source of PCDD/F contamination in the soils closest to the plant. Multivariate data analyses such as PCA are therefore useful to identify sources of emission causing contamination. 相似文献
6.
Animal territories that differ in the availability of food resources will require (all other things being equal) different levels of effort for successful reproduction. As a consequence, breeding performance may become most strongly dependent on factors that affect individual foraging where resources are poor. We investigated potential links between foraging behaviour, reproductive performance and morphology in a goshawk Accipiter gentilis population, which experienced markedly different resource levels in two different parts of the study area (rabbit-rich vs. rabbit-poor areas). Our analyses revealed (1) that rabbit abundance positively affected male reproductive output; (2) that age, size and rabbit abundance (during winter) positively affected different components of female reproductive output; (3) that foraging movements were inversely affected by rabbit abundance for both sexes (for females, this may mainly have reflected poor provisioning by males in the rabbit-poor area); (4) that younger breeders (both in males and females) tended to move over larger distances than older individuals (which may have reflected both a lack of hunting experience and mate searching); and (5) that male body size (wing length) showed some covariation with resource conditions (suggesting possible adaptations to hunting agile avian prey in the rabbit-poor area). Although we are unable to establish firm causal relationships with our observational data set, our results provide an example of how territory quality (here, food abundance) and individual features (here, age and morphology) may combine to shape a predator's foraging behaviour and, ultimately, its breeding performance. 相似文献
7.
Validation and global uncertainty of a gas chromatographic with mass spectrometry method for fenamidone analysis in grapes and wines 总被引:1,自引:0,他引:1
Abreu Sde M Herbert P Caboni P Cabras P Alves A Garau VL 《Journal of environmental science and health. Part. B》2007,42(7):817-822
Fenamidone is an imidazolinone fungicide recently introduced in viticulture practices. This work reports the validation and assessment of global uncertainty of a gas chromatographic with mass spectrometry method to analyze fenamidone in grapes and wines. This method consists in a simple and fast liquid-liquid extraction step followed by chromatographic determination. Limits of detection for fenamidone in grapes and wines were, respectively, 0.05 mg/kg and 0.06 mg/L, precision was below 9.4% and average recovery was 89 +/- 5%. In the concentration range from 0.05 to 1.00 mg/kg (or mg/L) of fenamidone, global uncertainty calculated following the EURACHEM/CITAC rules, and also by the Horwitz function, was below 25%. The EURACHEM/CITAC global uncertainty budget used gave lower estimates than those obtained from the Horwitz function. 相似文献
8.
María del Mar Delgado Vincenzo Penteriani Vilis O. Nams Letizia Campioni 《Behavioral ecology and sociobiology》2009,64(1):35-43
Moving and spatial learning are two intertwined processes: (a) changes in movement behavior determine the learning of the
spatial environment, and (b) information plays a crucial role in several animal decision-making processes like movement decisions.
A useful way to explore the interactions between movement decisions and learning of the spatial environment is by comparing
individual behaviors during the different phases of natal dispersal (when individuals move across more or less unknown habitats)
with movements and choices of breeders (who repeatedly move within fixed home ranges), that is, by comparing behaviors between
individuals who are still acquiring information vs. individuals with a more complete knowledge of their surroundings. When
analyzing movement patterns of eagle owls, Bubo bubo, belonging to three status classes (floaters wandering across unknown environments, floaters already settled in temporary
settlement areas, and territory owners with a well-established home range), we found that: (1) wandering individuals move
faster than when established in a more stable or fixed settlement area, traveling larger and straighter paths with longer
move steps; and (2) when floaters settle in a permanent area, then they show movement behavior similar to territory owners.
Thus, movement patterns show a transition from exploratory strategies, when animals have incomplete environmental information,
to a more familiar way to exploit their activity areas as they get to know the environment better. 相似文献
9.
10.
Andrea Pietro Reverberi Vincenzo Giorgio Dovì Bruno Fabiano Luigi Maga 《Journal of Cleaner Production》2009,17(10):963-968
An unsteady-state biosorption column model in one space variable is considered in this paper. The theoretical study is motivated by the need for predicting the dependent variables of biosorption columns for removal of heavy metals from wastewater, which is potentially an important technology in cleaner production. Pollutant concentrations in the bulk phase, in the liquid filling the pores and in the solid biomass along the axial coordinate of the column were evaluated for a wide range of physical and chemical parameters of the global process. In particular, the assumption of instantaneous chemical reactions is replaced by a more realistic expression taking into account chemical kinetics and fluid advection time scales separately. The resulting system of partial differential equations was solved by means of a reliable numerical algorithm based on the method of lines. The data obtained using the model described in this paper are compared with published experimental data and an estimation of the increased efficiency is made. 相似文献