Asbestos in lake and reservoir waters of Staten Island,New York: Source,concentration, mineralogy,and size distribution |
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Authors: | Gerard P Maresca John H Puffer Mark Germine |
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Institution: | (1) Graduate Program, Geology Department, Rutgers University, 07102 Newark, New Jersey |
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Abstract: | There is strong evidence indicating that the six commonly recognized varieties of asbestos are cancer-producing agents Epidemiological
and experimental data indicate that, although response to inhalation exposure is most marked, exposure by ingestion probably
also entails a risk of excess tumor incidence. The toxicity of mineral fibers can be related to fiber dimensions, mineralogy,
chemistry, and surface-active properties.
In the Silver Lake Reservoir in Staten Island, New York, where chrysotile from serpentinite bedrock exposures is a potential
source of contamination, chrysotile asbestos levels of 15 to 86 million fibers per liter (MFL) were measured, with an average
of 53 MFL Much lower levels (average 0 3 MFL) were observed in small lakes and ponds with clayey bottoms on the Staten Island
Serpentinite. |
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Keywords: | |
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