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Chloroform
Peter Watts
G. Long
M. E. Meek
出版
World Health Organization
, 2004-10-08
主題
Medical / Public Health
Medical / Toxicology
Nature / Environmental Conservation & Protection
Technology & Engineering / Environmental / Pollution Control
ISBN
9241530588
9789241530583
URL
http://books.google.com.hk/books?id=BlE0DgAAQBAJ&hl=&source=gbs_api
EBook
SAMPLE
註釋
Chloroform is a clear colourless volatile liquid with a pleasant etheric odour. It is mainly used in the production of chlorodifluoromethane (HCFC-22) which is used (in decreasing quantities) as a refrigerant and (increasingly) as a fluoropolymer feedstock. Chloroform may be released into the environment from HCFC-22 plant and from pulp and paper mills using chlorine-based chemicals for bleaching and disinfection purposes. It is estimated that about 90% of total chloroform emissions into the environment are natural in origin. Chloroform is also the principal by-product of water disinfectant processes such as chlorine-chloramine chlorine-chlorine and ozone-chlorine treatment. Levels vary widely depending upon concentrations of organic materials in the raw water and are also influenced by treatment method temperature and pH. This book evaluates the risk to human health and the environment posed by exposures to chloroform. Human data on its toxicity are limited but the liver is a key target organ in laboratory animals and likely to be so in humans.