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World Health Organization : Report on a European Syposium Convened by the Regional Office for Europe, Environmental Pollutants, Study Group, No. 74.8: World Health Organization Organisation Mondiale de la Sant

By World Health Organization

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Book Id: WPLBN0000201731
Format Type: PDF eBook
File Size: 0.6 MB
Reproduction Date: 2005
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Title: World Health Organization : Report on a European Syposium Convened by the Regional Office for Europe, Environmental Pollutants, Study Group, No. 74.8: World Health Organization Organisation Mondiale de la Sant  
Author: World Health Organization
Volume:
Language: English
Subject: Health., Public health, Wellness programs
Collections: Medical Library Collection, World Health Collection
Historic
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Publisher: World Health Organization

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Organization, W. H. (n.d.). World Health Organization : Report on a European Syposium Convened by the Regional Office for Europe, Environmental Pollutants, Study Group, No. 74.8. Retrieved from http://hawaiilibrary.net/


Description
Medical Reference Publication

Excerpt
INTRODUCTION The decomposition of organic molecules such as pesticides and polymers is known to occur under- the influence of a variety of agents, e.g. heat, oxygen, light, water, ionizing radiation, biological organisms, mechanical forces and numer.ous chemical reagents. The tern) degradation is generally applied to such decompositions, since they generally lead to a reduction and/or destrucrion of the original useful properties. Degradation may occur relatively slowly during use, as in the outdoor or environmental weathering of pertjridps or plastics, or it may occur rapidly as in pyrolysis Or Incineration. Since degradation limits the useful life of a product and the conditions to which it can be exposed during processing, degradation is regarded as a technologically undesirable phenomenon. Hence considerable effort has been devoted to the elaboration of the kinetics and mechanism. nY degradation processes and concomittantly to the development of methods for preventing fir retarding them. For example, the search for degradation-resistant materials has 1,ed to a variety of useful stabilizing additives, and to promising new polymers.

Table of Contents
Contents Page 1. I n t r o d u c t i o n ............................................ 1 2. ?he use o f ~ h o t o s e n s i t i z e r s w i t h pesticides ............. 1 3. l k e use of photosensitizers w i t h polymers ............... 9 References .................................................. 14

 

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