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排序方式: 共有710条查询结果,搜索用时 15 毫秒
1.
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
2.
Aris Antsaklis John Politis Costas Karagiannopoulos Dionysios Kaskarelis Photini Karababa John Panourgias Marina Boussiou Dimitris Loukopoulos 《黑龙江环境通报》1984,4(4):289-296
Selective feticide is the procedure of choice when, in twin binovular pregnancy, only one of the fetuses is shown to be affected. As the probabilities for this condition are almost 1:2 when the genetic disease is due to homozygosity for two autosomal recessive genes, the problem is expected to occur frequently among the ever increasing number of couples seeking prenatal diagnosis of thalassaemia and the haemoglobinopathies. The present report is the first case of this condition and the ninth in the overall medical literature. 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.
5.
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
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.
Konstantinova Elizaveta Burachevskaya Marina Mandzhieva Saglara Bauer Tatiana Minkina Tatiana Chaplygin Victor Zamulina Inna Konstantinov Alexandr Sushkova Svetlana 《Environmental geochemistry and health》2022,44(2):349-368
Environmental Geochemistry and Health - Lake Atamanskoye is one of the most polluted aquatic environments in the South of Russia. This water body was affected by long-term pollution by effluent... 相似文献
8.
Aliste Marina Garrido Isabel Pérez-Lucas Gabriel Flores Pilar Hellín Pilar Navarro Simón Fenoll José 《Environmental science and pollution research international》2021,28(19):23849-23858
Environmental Science and Pollution Research - In this study, the photocatalytic degradation of four fungicides, myclobutanil, penconazole and difenoconazole (triazole compounds) and boscalid... 相似文献
9.
Macías-Vargas José-Alberto Campos-Mañas Marina Celia Agüera Ana Sánchez Pérez José Antonio Ramírez-Zamora Rosa-María 《Environmental science and pollution research international》2021,28(19):24008-24022
Environmental Science and Pollution Research - In this work, the activated persulfate oxidation of ciprofloxacin (CIP) using a low-grade titanium ore under sunlight or simulated sunlight were... 相似文献
10.
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