Marsh test
Marsh test
noun \ˈmärsh-\Definition of MARSH TEST
: a sensitive test for arsenic in which a solution to be tested is treated with hydrogen so that 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)
Biographical Note for MARSH TEST
Marsh, James Ernest (1794–1846), British chemist. Marsh spent considerable time studying poisons and their effects. He introduced his test for arsenic in 1836.
