Asbestos Cement Drinking Water Pipes and Possible Health Risks - Review
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Assessment of asbestos in drinking water in alexandria, egypt.
Over the past several years, the presence of fibrous asbestos particulates has been observed in a number of municipal water supplies throughout the USA, Canada, and several other regions all over the world. The possible health hazards which these fibers present have spurred a great deal of interest in the problems of detection and removal of the submicroscopic particulates in water. Asbestos is...
متن کاملEvaluation of the Webler-Brown model for estimating tetrachloroethylene exposure from vinyl-lined asbestos-cement pipes
BACKGROUND From May 1968 through March 1980, vinyl-lined asbestos-cement (VL/AC) water distribution pipes were installed in New England to avoid taste and odor problems associated with asbestos-cement pipes. The vinyl resin was applied to the inner pipe surface in a solution of tetrachloroethylene (perchloroethylene, PCE). Substantial amounts of PCE remained in the liner and subsequently leache...
متن کاملEngineering and operating approaches for controlling asbestos fibers in drinking water.
Techniques are available to minimize the concentration of asbestos fibers in drinking water. Filtration research conducted at locations on Lake Superior and in the Cascade Mountains in Washington has shown that amphibole and chrysotile fibers can be removed by granular media filtration. Removal percentages can exceed 99% when the raw water is coagulated properly and the filtered water turbidity...
متن کاملAssessment of studies on cancer risks from asbestos in Connecticut drinking water.
Two related studies were conducted in Connecticut to try to assess cancer risks from asbestos in Connecticut public drinking water (1-3). Eleven of the state's 169 towns used source waters containing small amounts of asbestos (less than 500,000 fibers/L as delivered to users). In 82 towns, some, but rarely all, of the population received in their homes water delivered through asbestos cement (A...
متن کاملConcentration and size of asbestos in water supplies.
A review of the results of over 1500 asbestos analyses from U.S. water supplies suggests that the majority of water consumers are not exposed to asbestos concentrations in their drinking water over 1 x 10(6) fibers per liter. There are, however, some populations that are exposed to waterborne asbestos concentrations over 10 x 10(6) fibers per liter caused by natural erosion, mine processing was...
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تاریخ انتشار 2002