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Topic: Marsh test

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  Arsenic - Wikipedia, the free encyclopedia
As the symptoms of arsenic poisoning were somewhat ill-defined, it was frequently used for murder until the advent of the Marsh test, a sensitive chemical test for its presence.
This program was designed to prevent drinking of bacterially-contaminated surface waters, but unfortunately failed to test for arsenic in the groundwater.(2) Many other countries in South East Asia, such as Vietnam, Cambodia, and Tibet, are thought to have geological environments similarly conducive to generation of high-arsenic groundwaters.
The northern United States, including parts of Michigan, Wisconsin, Minnesota and the Dakotas are known to have significant concentrations of arsenic in ground water.
en.wikipedia.org /wiki/Arsenic   (1560 words)

 Infoplease Search: marsh
(Encyclopedia) Marsh test, method for the detection of arsenic, so sensitive that it can be used to detect minute...
(Almanac - People) Ray Marsh, crematory operator, was arrested in February after investigators discovered several...
(Encyclopedia) marsh antelope, name for members of a group of deerlike African antelopes, usually found in reeds...
www.infoplease.com /search?fr=iptn&query=Marsh&in=all   (141 words)

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