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Harmful substances released by polymers

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Harmful substances released by polymers

  1. Calculation instruction. Specific indicators of the formation of harmful substances released into the atmosphere from the main types of technological equipment for enterprises of the radio-electronic complex, 2006
    It acts instead of the methodology "Regulatory indicators of specific emissions of harmful substances into the atmosphere from the main types of technological equipment of enterprises in the industry (Kharkiv, 1991)". The archive includes the methodology and letters of the Research Institute of Atmosphere for its explanation. This calculation instruction (methodology) is intended to determine the qualitative and quantitative composition of emissions of harmful substances from the main
  2. Harmful substances in the workplace air
    Harmful substances in the air in the form of vapors, gases, and aerosols (dust) are chemicals that cause disruption of the normal functioning of the body under production conditions, causing acute and chronic intoxication. According to the degree of impact on the human body, harmful substances are divided into four hazard classes, which are established depending on the MAC in the air
  3. Accounting for the transformation of harmful substances in the atmosphere
    1. In accordance with clause 1.5 of the UND-86 [6], when calculating air pollution, one should take into account the complete or partial transformation of harmful substances entering the atmosphere into more toxic ones. When determining emissions of nitrogen oxides (MNOx) in terms of NO2 for all types of technological processes and vehicles, it is necessary to separate them into components: nitrogen oxide and nitrogen dioxide. Power
  4. Hygienic standards of harmful substances in the air of working premises
    According to the degree of potential danger of exposure to the human body, hazardous substances are divided into 4 classes (see “SSBT. Harmful substances. Classification and general safety requirements.” GOST 12.1.007-76 as amended by No. 1 as of January 1, 1982, the term SDNW lost force - belong to hazard class I): I — extremely dangerous, II — highly hazardous, III — moderately hazardous, IV — low-hazard (Table 97).
  5. Hygienic regulation of harmful substances in the environment and food
    Hygienic regulation is mandatory for all toxic substances entering the human body from the environment - air, water, soil, food products, materials in contact with food products, etc. Any chemical substance is toxic under certain exposure conditions. Toxicity - the ability of a substance to cause harm to a living organism. On the human body
  6. Technical emission standards (TNV) of harmful (polluting) substances into the air
    1. Modern environmental legislation of the Russian Federation establishes new approaches (requirements) to government regulation of emissions of pollutants into the air. Legislatively [I] establishes, in addition to the maximum permissible emissions, technical emission standards. Technical emission standard - emission standard harmful (polluting)
  7. Maximum permissible concentrations of harmful substances in the air
    The maximum permissible concentration (MPC) of a substance in atmospheric air is considered to be such a concentration at which the adverse effect of this substance on the human body is excluded for an indefinitely long time (Table 14). Table 14. Maximum permissible concentrations of polluting substances in the ambient air of populated areas of the Subsidiary Values ​​of MPC, mg / me, maximum one-time
  8. Measures for the prevention of pollution of the working environment with harmful chemicals
    The basis of preventive measures (see Chapter 10) is the comprehensive application of legislative, technological, hygienic and medical preventive measures. Let us single out hygienic and medical preventive measures: recording and investigating the causes of occupational poisoning; preliminary and periodic medical examinations of workers; sanitary instruction; use of measures
  9. The allocation of harmful substances during the ignition of the forges with the use of oily waste.
    According to the technological process of forging, the metal is heated in the furnace by burning coal in the furnace. The temperature of ignition of coal is 450 ° C, and therefore the preparation of fuel for ignition requires significant amounts of heat and lasts a long time. Due to the fact that the moisture content of coal with a grain size of 25-50 mm is Wp = 27–29%, for
  10. TOXIC SUBSTANCES OF THE INDUSTRIAL ENVIRONMENT AND MEASURES OF PREVENTION OF THEIR HARMFUL EXPOSURE
    General sanitary and hygienic requirements for working area air are governed by the same name GOST 12.1.005-88; normal gas composition of air (in percent by volume): nitrogen — 78.02; oxygen - 20.95; carbon dioxide - 0.03; Argon, neon, krypton, xenon, radon, ozone, hydrogen - up to a total of 0.94. The working area is a space up to 2 m above the floor or level where there are
  11. Directory. Properties of harmful and hazardous substances circulating in the oil and gas complex, 2005

  12. Recommended composition and content of the “Report on the inventory of emissions of harmful (polluting) substances into the atmospheric air and their sources for the enterprise”
    "The report on the inventory of emissions of harmful (polluting) substances into the air and their sources for the enterprise" (hereinafter referred to as the "Report on the inventory") should include the following sections: - Title page; - Information about the developer and the list of performers; - Abstract; - Content. Introduction 1. General information about the company. 2. Brief description of the process
  13. Accounting for emission parameters of harmful substances and their characteristics when calculating air pollution
    2.2.1. Setting the parameter F 1. To determine the surface concentrations of solid particles (dust) in accordance with OND-86 [6], the dimensionless coefficient F should be determined, taking into account the speed of gravitational sedimentation of these particles in atmospheric air on the underlying surface. According to clause 2.5 of the OND-86, the value of the coefficient F varies from 1 to 3 depending on the composition of the dust (subparagraph a) and
  14. BRIEF INFORMATION ABOUT POLYMERS
    Polymers are compounds whose molecules are built from repetitive structural units — units. Some polymeric materials consist only of a polymer base, many - of a polymer base and a number of chemical compounds that give the material plasticity, strength, color and other qualities. In this regard, often polymeric materials are called plastics.
  15. How breast produces and excretes milk
    Understanding how your breasts produce milk, and how you can improve its performance, will help you appreciate the beautiful feminine art and science of breastfeeding. By structure, the system of milk secretion inside the breast resembles a tree. The mammary glands (leaves) are similar to a bunch of grapes cells (lobules), they are deep in the breast and produce milk. Next of these slices milk
  16. Furniture making polymers
    Furniture products are one of the main components of the interior of dwellings, which largely determines their improvement and comfort. In modern types of apartments, furniture occupies from 30 to 32% of the area in each room, and in bedrooms from 46 to 47% or more (N. Y. Yanko, 1973). The saturation coefficients of the volumetric space of living rooms with furniture are usually lower than linear ones.
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