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排序方式: 共有570条查询结果,搜索用时 31 毫秒
1.
Luiz R. R. Faria 《Conservation biology》2021,35(2):745-747
Article impact statement: The optimism permeating biological conservation should be recalibrated considering the future that present times portend. 相似文献
2.
TPH-contaminated Mexican Refinery Soil: Health Risk Assessment and the First Year of Changes 总被引:4,自引:0,他引:4
Iturbe R Flores RM Flores CR Torres LG 《Environmental monitoring and assessment》2004,91(1-3):237-255
The soil of a coastal Mexican refinery is quite contaminated, especially by hydrocarbons, with detected concentrations up to 130000 mg kg(-1) as TPHs (total petroleum hydrocarbons). The main sources of contamination are pipelines, valves, and old storage tanks, besides the land disposal of untreated hydrocarbon sediments derived from the cleaning of storage tanks. A health risk assessment (HRA) was carried out in order to measure the risk hazard indexes and clean-up standards for the refinery soil. HRA suggested the following actions to be taken: benzene concentrations must be reduced in eight of the 16 studied refinery zones to 0.0074-0.0078 mg kg(-1). Also, vanadium concentration must be reduced in two zones up to a concentration of 100 mg kg(-1). In only one of all of the studied zones, benzo(a)pyrene concentration must be reduced to 0.1 mg kg(-1). After 1 yr, TPHs showed a diminution of about 52%. Even though TPHs concentrations were variable, during 1999 the average concentrations were as much as 15.5 times the goal concentration. For year 2000, TPHs concentrations were only 7.4-fold the proposed value. For the 1999-2000 period, PAHs (polycyclic aromatic hydrocarbons) concentrations decreased by 82%. Some PAHs with 2, 3, 4, and 5 aromatic rings were removed up to 100% values. 相似文献
3.
Rosa Cartolano Silvana Guerneri Roberto Fogliani Andrea Galimberti Umberto Nicolini 《黑龙江环境通报》1993,13(11):1057-1059
Trisomy 12 mosaicism diagnosed at 16 weeks' amniocentesis in a 42-year-old woman was not confirmed at 18 weeks' gestational age in amniotic fluid or fetal blood. Fetal skin biopsy performed at the same time did, however, allow the detection of trisomy 12 in 1 of 14 fibroblasts analysed. Fetal skin biopsy can be included within the diagnostic procedures to be performed when a level III mosaicism is found in the amniotic fluid. 相似文献
4.
Francesco Stea Fabrizio Bianchi Liliana Cori Rosa Sicari 《Environmental science and pollution research international》2014,21(1):244-251
Several population studies relate exposure to high levels of arsenic with an increased incidence of ischemic heart disease and cardiovascular mortality. An association has been shown between exposure to high levels of arsenic and cardiovascular risk factors such as hypertension and diabetes mellitus, and vascular damage such as subclinical carotid atherosclerosis. The mechanisms underlying these phenomena are currently being studied and appear to indicate an alteration of vascular function. However, the effects of low levels of exposure to arsenic and their potential detrimental cardiovascular effect are less explored. The article provides an overview of the pathophysiologic mechanisms linking low-level arsenic exposure to the occurrence of cardiovascular disease and its complications, and some potential preventive strategies to implement. 相似文献
5.
6.
Victor E. Balderas-Hernández José T. Ornelas-Salas Ana P. Barba de la Rosa 《Journal of environmental science and health. Part. B》2020,55(2):148-154
AbstractThe presence of diethyl-phthalate (DEP), dibutyl-phthalate (DBP), butylbenzyl-phthalate (BBP), diethylhexyl-phthalate (DEHP) and diisononyl-phthalate (DINP) was determined in 295 tequila samples. They were grouped by age of maturation (white, aged, extra aged or ultra aged) and year of production (between 2013 and 2018). Gas Chromatography coupled with Mass Spectrometry was used for identification and quantification. The results showed that 65 samples (22% of the total) were phthalate free. DEP (0.13-0.27?mg/kg), BBP (0.05–2.91?mg/kg) and DINP (1.64–3.43?mg/kg) were detected in 11 (3.73%), 37 (12.54%) and 5 (1.69%) samples, respectively. But, these concentrations did not exceed the maximum permitted limits (MPL) of phthalates for alcoholic beverages. DBP (0.01–2.20?mg/kg) and DEHP (0.03–4.64?mg/kg) were detected in 96 (32.54%) and 224 (75.93%) samples, from them only 10 (3.39%) and 15 (5.08%) samples, respectively, exceeded the MPL for alcoholic beverages and they were few tequilas produced in the year 2014 or before. DEHP was the most frequent phthalate found in tequila and observed DEHP concentrations were 2-times higher in ultra aged tequilas compared to those in white tequilas. We concluded that all tequilas produced in 2015 and after, satisfied the international standards for these compounds. 相似文献
7.
Luis H. P. Garbossa Robson V. Souza Carlos J. A. Campos Argeu Vanz Luiz F. N. Vianna Guilherme S. Rupp 《Environmental monitoring and assessment》2017,189(1):27
Thermotolerant coliform (TC) loadings were quantified for 49 catchments draining into the North and South Bays of Santa Catarina (SC, southeastern Brazil), an area known for its tourism and aquaculture. TC loadings were calculated based on flow measurements taken in 26 rivers. TC concentrations ere quantified based on surface water samples collected at 49 catchment outlets in 2012 and 2013. Median TC loads ranged from 3.7 × 103 to 6.8 × 108 MPN s?1. TC loadings in the catchments increased in proportion to increases in resident human population, population density and percentage of urbanised area. Catchments with more than 60% of area covered by wastewater collection and treatment systems had higher TC loads per person than catchments with less than 25%. Based on the study catchments, these results indicate that current sewerage infrastructure is ineffective in reducing contamination of faecal origin to surface waters. These findings have important implications for the management of microbiological health hazards in bathing, recreational and shellfish aquaculture waters in the North and South Bays of Santa Catarina Island. 相似文献
8.
Moles Samuel Berges Javier Ormad María P. Nieto-Monge M. Jesús Gómez Jairo Mosteo Rosa 《Environmental science and pollution research international》2021,28(19):24167-24179
Environmental Science and Pollution Research - The process TiO2/PAC/UV-vis has been under study and compared with the isolated treatments of adsorption and photocatalysis determining possible... 相似文献
9.
Gambino Edvige Chandrasekhar Kuppam Nastro Rosa Anna 《Environmental science and pollution research international》2021,28(24):30436-30451
Environmental Science and Pollution Research - Marine pollution is becoming more and more serious, especially in coastal areas. Because of the sequestration and consequent accumulation of... 相似文献
10.
Solá María Zoleica Simón Prado Carolina Rosa Mariana Aráoz María Victoria Coll Benimeli Claudia Susana Polti Marta Alejandra Alvarez Analia 《Environmental science and pollution research international》2021,28(37):51217-51231
Environmental Science and Pollution Research - Phytoremediation techniques have been proposed as ecological methods to clean up contaminated sites. This study is aimed to evaluate the effect of the... 相似文献