Definition of Marsh test in English:

Marsh test

(also Marsh's test)

noun ˈmɑːʃ tɛst

Chemistry

A sensitive test for the presence of arsenic, in which nascent hydrogen generated by the addition of hydrochloric acid and zinc is used to reduce any arsenic in a sample to the gas arsine, which is then converted by heat to a brown deposit of metallic arsenic (distinguishable from the similar stain given by antimony by its solubility in sodium hypochlorite solution).

Origin

Mid 19th century; earliest use found in London and Edinburgh Philosophical Magazine. From the name of James Marsh, English chemist and physicist, who devised the method in 1836 + test.

Definition of Marsh test in US English:

Marsh test

(also Marsh's test)

nounˈmɑːʃ tɛst

Chemistry

A sensitive test for the presence of arsenic, in which nascent hydrogen generated by the addition of hydrochloric acid and zinc is used to reduce any arsenic in a sample to the gas arsine, which is then converted by heat to a brown deposit of metallic arsenic (distinguishable from the similar stain given by antimony by its solubility in sodium hypochlorite solution).

Origin

Mid 19th century; earliest use found in London and Edinburgh Philosophical Magazine. From the name of James Marsh, English chemist and physicist, who devised the method in 1836 + test.

单词	Marsh test
释义	Definition of Marsh test in English: Marsh test (also Marsh's test) noun ˈmɑːʃ tɛst Chemistry A sensitive test for the presence of arsenic, in which nascent hydrogen generated by the addition of hydrochloric acid and zinc is used to reduce any arsenic in a sample to the gas arsine, which is then converted by heat to a brown deposit of metallic arsenic (distinguishable from the similar stain given by antimony by its solubility in sodium hypochlorite solution). Origin Mid 19th century; earliest use found in London and Edinburgh Philosophical Magazine. From the name of James Marsh, English chemist and physicist, who devised the method in 1836 + test. Definition of Marsh test in US English: Marsh test (also Marsh's test) nounˈmɑːʃ tɛst Chemistry A sensitive test for the presence of arsenic, in which nascent hydrogen generated by the addition of hydrochloric acid and zinc is used to reduce any arsenic in a sample to the gas arsine, which is then converted by heat to a brown deposit of metallic arsenic (distinguishable from the similar stain given by antimony by its solubility in sodium hypochlorite solution). Origin Mid 19th century; earliest use found in London and Edinburgh Philosophical Magazine. From the name of James Marsh, English chemist and physicist, who devised the method in 1836 + test.
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