An enzyme test has been worked out for detecting organophosphorus compounds in water. The test is based on the inhibition of cholinesterase. The detection limits for the "nerve gases" are (microgram/L): Soman 0.12, VX 5.9, Sarin 9.9 and Tabun 26. The detection limit for the organophosphorus pesticide dichlorvos is 50 micrograms/L.
        
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Reiner E, Simeon V, Simaga S, Cizl S, Jelicic D, Sumanovic V, Batinic D (1993) A field-test for detecting organophosphorus compounds in water Arh Hig Rada Toksikol44: 159-62
Reiner E, Simeon V, Simaga S, Cizl S, Jelicic D, Sumanovic V, Batinic D (1993) Arh Hig Rada Toksikol44: 159-62