Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Chemical agents health effects

Whilst the causative agent(s) have not been established it is thought to be multifunctional and possibilities include physical factors (humidity, temperature, lighting), static electricity, electromagnetic radiation, air ion concentrations, fungi, noise, psychological stress, and chemicals. Chemicals which are not those involved in the normal work processes can become trapped within the building, albeit at concentrations below those known to cause ill-health effects, if ... [Pg.142]

Thus, there is a clear need to establish the relationship between the health effects of hazardous chemical agents in the environment and the level of occupational exposure to the body by means of an occupational exposure limit, in which a reference figure for the concentration of a chemical agent is set. In fact, occupational exposure limits (OELs) have been a feature of the industrialized world since the early 1950s. They were introduced, primarily in the United States, at a time when measures to prevent occupational diseases were considered more beneficial than compensating victims, and in this sense OELs have played an important part in the control of occupational illnesses. [Pg.363]

The idea behind OELs is to identify the highest level of exposure concentration and the corresponding reference time period for which we can be confident that there will be no adverse effects on health. However, the concentrations and lengths of exposure at which the presence of airborne chemical agents could damage health have not been clear for many years, and even today there are many questions to be answered. [Pg.363]

Hazard characterization is a quantitative or semi-quantitative evaluation of the nature, severity, and duration of adverse health effects associated with biological, physical, or chemical agents that may be present in food. The characterization depends on the nature of the toxic effect or hazard. Eor some hazards such as genotoxic chemicals, there may be no threshold for the effect and therefore estimates are made of the possible magnitude of the risk at human exposure level (dose-response extrapolation). [Pg.570]

The health effect side of the diagram shows that unit risk estimates result from interactive analyses of health-affecting processes in the human body and observed effects in human populations (epidemiology). Health effects are identified by integrating clinical studies on humans or animals with studies of physical and chemical responses to pollutant agents in the human body. [Pg.69]

On the basis of this assessment of the current literature and on comments received on the first edition of this book, this volume has been written to focus on these details. With this new information, additional classes of agents have been added. Where it provided clarity, multiple classes have been consolidated into a single class. The information in existing classes has been updated and expanded. There is a significant increase in the number of agents described, as well as in the number of components, precursors, and decomposition products. There is more information on health effects and on the chemical, physical, and biological properties of these materials. [Pg.787]

Risk Assessment. What is the incidence of the adverse health effects from the chemical agent This crucial question for regulatory decision making might be answered by combining the unit risk assessment with the exposure assessment. As In the exposure assessment, the question must be addressed in the context of one or more specific control policies. [Pg.185]

Ahood, LG. Possible Long-Term Health Effects of Short-Term Exposure to Chemical Agents (1982) op. cit,... [Pg.370]

Possible Long-term Health Effects of Short-term Exposure to Chemical Agents, Vol. 2, National Academy Press, Washington D.C., 1984 http //books.nap.edu/openbook.php record id=... [Pg.651]


See other pages where Chemical agents health effects is mentioned: [Pg.66]    [Pg.1444]    [Pg.2179]    [Pg.49]    [Pg.42]    [Pg.516]    [Pg.45]    [Pg.365]    [Pg.322]    [Pg.323]    [Pg.566]    [Pg.27]    [Pg.33]    [Pg.306]    [Pg.36]    [Pg.763]    [Pg.5]    [Pg.6]    [Pg.149]    [Pg.6]    [Pg.241]    [Pg.246]    [Pg.171]    [Pg.185]    [Pg.185]    [Pg.186]    [Pg.193]    [Pg.92]    [Pg.129]    [Pg.186]    [Pg.140]    [Pg.140]    [Pg.348]    [Pg.367]    [Pg.75]    [Pg.579]    [Pg.19]    [Pg.62]    [Pg.14]    [Pg.166]   
See also in sourсe #XX -- [ Pg.667 ]




SEARCH



Agent Effects

Chemical agents, effect

© 2024 chempedia.info