Medical Dictionary
Main Entry:
Marsh test Pronunciation:
'märsh- Function:
noun : a sensitive test for arsenic in which a solution to be tested is treated with hydrogen sothat if arsenic is present gaseous arsine is formed and then decomposed to a black deposit of arsenic (as when the gas is passed through a heated glass tube)
Marsh,
James Ernest(1794–1846), British chemist. Marsh spent considerable time studying poisons and their effects. He introduced his test for arsenic in 1836.
