BIOLOGICAL MODEL FOR CHARACTERIZATION OF FLUORINE TOXICOKINETICS

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MULTIPLE CORRELATION MODEL FOR ESTABLISHING THE ASSOCIATION BETWEEN ATMOSPHERIC AIR POLLUTION AND MORBIDITY

A characteristics of atmospheric air pollution during the period from 1980 till 1992 in the town of Beloslav, a settlement located in the immediate proximity of Devnya industrial complex was prepared. The following parameters were examined: dust, sulphur dioxide, sulphuric acid, hydrogen sulphide, nitric oxides, ammonia, chlorine, and hydrogen fluoride. Annual indexes of pollution presented according to the Canadian Indexing System exceeded considerably the hygienic standards concerning most atmospheric air pollutants. During the whole period of observation the total index varied between 3,22 and 8,28 one unit being the standard. The morbidity rate of the population according to the registration files for children and adults was analyzed, too. Multiple correlation and step regression analyses were applied to follow-up the influence of the atmospheric air pollution on the morbidity. There were statistically reliable correlation dependences between the atmospheric air pollution and the diseases of the respiratory, nervous, alimentary and other systems

Human health risk assessment due to ambient PM10 and SO2 by an air quality modeling technique

Exposure to air pollutants may be an important environmental risk factor for human health. The main objective of this study was to assess the health impacts of exposure to particulate matter of aerodynamic diameter <= 10 mu g (PM10) and to sulfur dioxide (SO2) using the AirQ2.2.3 software developed by the WHO European Center for Environment and Health. Daily concentrations of PM10 and SO2 were used to assess the health effects. With regard to the mortality, the results showed that 3.9 (95 CI: 3.3-4.5) of total, 4.2 (95 CI: 2.7-9.05) of cardiovascular, and 6.2 (95 CI: 4.2-16.9) of respiratory mortality were related to PM10 concentrations above 10 mu g/m(3), respectively. In addition, 1.7 (95 CI: 1.3-2.06) of total, 3.4 (95 CI: 0.78-5.0) of cardiovascular, and 2 (95 CI: 2.5-5.7) of respiratory death were attributed to SO2 levels higher than 10 mu g/m(3), respectively. Given these findings, urgent policy decisions are needed to reduce the death caused by air pollution, and better quantification studies are recommended. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved

Catalytic reduction of nitrous oxide at a nitric acid plant in Bulgaria

A nitric acid plant in Devnya, Bulgaria has implemented a project for catalytic decomposition of nitrous oxide which resulted in reducing N2O emissions from the plant and the overall N2O emissions from the industrial sector in Bulgaria. After implementing the catalyst in September 2005 till the end of 2011, a total amount of 3133 Mg N2O emissions has been measured while the supposed value of N2O emissions without the catalyst being installed would have been 9747 Mg which means a total reduction of 6614 Mg. The results from the research prove the emission reduction potential of the catalyst

Синхронизация болгарского и европейского законодательств в сфере сохранения чистоты атмосферного воздуха

У статті розглядаються правові вимоги та політики по в галузі охорони атмосферного повітря та його застосування в болгарському законодавстві. Проаналізовані області в національному законодавстві, що повністю синхронізується з вимогами ЄС.В статье рассматриваются правовые требования и политики в сфере охраны атмосферного воздуха и его применение в болгарском законодательстве. Проанализированы сферы в национальном законодательстве, что полностью синхронизируется с требованиями ЕС.The article examines and analyzes the legal requirements and policies of EU in the field of conservation of air quality and its application in Bulgarian legislation. In the examined field the national legislation is fully synchronized with EU requirements

Синхронизация болгарского и европейского законодательств в сфере сохранения чистоты атмосферного воздуха

У статті розглядаються правові вимоги та політики по в галузі охорони атмосферного повітря та його застосування в болгарському законодавстві. Проаналізовані області в національному законодавстві, що повністю синхронізується з вимогами ЄС.В статье рассматриваются правовые требования и политики в сфере охраны атмосферного воздуха и его применение в болгарском законодательстве. Проанализированы сферы в национальном законодательстве, что полностью синхронизируется с требованиями ЕС.The article examines and analyzes the legal requirements and policies of EU in the field of conservation of air quality and its application in Bulgarian legislation. In the examined field the national legislation is fully synchronized with EU requirements