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61.
Gavriliev Sakhayaan Petrova Tatiana Miklyaev Petr 《Environmental science and pollution research international》2022,29(59):88606-88617
Environmental Science and Pollution Research - This article delves into the factors that may influence radon flux, such as soil properties and weather conditions, on the example of two experimental... 相似文献
62.
Kolehmainen E Tuppurainen K Lanina SA Sievänen E Laihia K Boyarskiy VP Nikiforov VA Zhesko TE 《Chemosphere》2006,62(3):368-374
Two quantum chemical models have been derived for the prediction of 13C NMR chemical shifts of novel PCB acids obtained from PCBs by catalytic carbonylation. 13C isotropic shielding constants were calculated employing the GIAO (gauge-independent atomic orbital) method with density functional theory (DFT). The best results were obtained by cluster calculations, which took the solvent effects into account properly. In this approach, a solvent molecule (acetone) was attached by a hydrogen bond to every hydrogen atom present in a PCB acid, and the geometry of the molecular cluster was optimized employing the AM1 method. For 158 chemical shifts, the cross-validated standard error was 2.8 ppm and the cross-validated correlation coefficient was 0.94. 相似文献
63.
Bartkow ME Kennedy KE Huckins JN Holling N Komarova T Müller JF 《Environmental pollution (Barking, Essex : 1987)》2006,144(2):371-376
Semi-permeable membrane devices (SPMDs) were loaded with deuterated anthracene and pyrene as performance reference compounds (PRCs) and deployed at a test site in four different chambers (open and closed box chamber, bowl chamber and cage chamber) for 29 days. The losses of PRCs and the uptake of polyaromatic hydrocarbons (PAHs) from the ambient air were quantified. UV-B levels measured in each deployment chamber indicated that SPMDs would be exposed to the most UV-B in the cage chamber and open box chamber. Significantly less PAHs were quantified in SPMDs deployed in the cage chamber and open box chamber compared to samplers from the other two chambers, suggesting that photodegradation of PAHs had occurred. The loss of PRCs confirmed these results but also showed that photodegradation was occurring in the closed box chamber. The bowl chamber appears to provide the best protection from the influence of direct photodegradation. 相似文献
64.
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
65.
66.
Gioda A Amaral BS Monteiro IL Saint'Pierre TD 《Journal of environmental monitoring : JEM》2011,13(8):2134-2142
Aerosol particle samples (PM10) were collected at urban, industrial and rural sites located in Rio de Janeiro, Brazil, between October 2008 and September 2009. Aerosol samples for each site were analyzed for total and soluble metals, water-soluble ions, carboxylic acids, and water-soluble organic carbon (WSOC). The results showed that the mean PM10 concentrations were 34 μg m(-3); 47 μg m(-3) and 71 μg m(-3) at the rural, urban and industrial sites, respectively. An increase in the average concentration of these particles due to air stagnation was observed during the period from May to September for all sites, and an increase in hospitalization for respiratory problems was also reported. On average, the anions species represented 4 to 14% of total content, while cations species corresponded to 1 to 11% and 7.5% for WSOC. The overall metal content at the industrial site was nearly the double that at the rural site. The concentrations of the studied species are influenced mainly by site location and the specific characteristics present at each site. However, higher concentrations of some species were observed on particular dates and were probably due to biomass burning and African dust events. The acid/aqueous percentiles showed that the most efficiently extracted metals from the aqueous phase were V and Ni (40%), while Al and Fe represented a lower percentage (<3%). Analysis of the aqueous fraction provides important information about the bioavailability of metals that is associated with the inflammatory process in the lungs. 相似文献
67.
Prado Tatiana Barbosa Mikaela Renata Funada Araújo Ronalda Silva Garcia Suzi Cristina Melo Adalgisa Jesus Galvani Ana Tereza Brandão Carlos Jesus Silva Renan Lourenço Oliveira Sato Maria Inês Zanoli 《Food and environmental virology》2021,13(4):520-527
Food and Environmental Virology - Hepatitis A virus (HAV) is the major cause of enterically transmitted infectious hepatitis. Between 2016 and 2017, the number of confirmed cases of hepatitis A... 相似文献
68.
69.
Rajput Vishnu D. Gorovtsov Andrey V. Fedorenko Grigoriy M. Minkina Tatiana M. Fedorenko Alexey G. Lysenko Vladimir S. Sushkova Svetlana S. Mandzhieva Saglara S. Elinson Maria A. 《Environmental geochemistry and health》2021,43(4):1477-1489
Environmental Geochemistry and Health - The paper presents the results of the model experiment on spring barley (Hordeum vulgare L.) grown in polluted soil. The influence of separate and combined... 相似文献
70.
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