trihalomethane การใช้

It is one of the four chloromethanes and a trihalomethane.
The U . S . Environmental Protection Agency classifies three of these trihalomethane byproducts _ chloroform, bromoform and bromodichloromethane _ as probable human carcinogens.
The EPA set the first trihalomethane limits in 1979 . Most water companies meet these standards, but the agency will tighten them in coming years.
Unfortunately, the breakdown of trihalomethane HCFCs does still result in the creation of some free chlorine radicals in the upper atmosphere and subsequent ozone destruction.
The California Department of Health temporarily suspended new building permits in January 2009 when water tests showed Trihalomethane levels at 0.103 milligrams per liter vs . the state standard of 0.080 milligrams per liter.