METHOD OF DETERMINING O- AND M-NITROTOLUENES IN AIR

摘要

FIELD: analytical methods.;SUBSTANCE: determination of o- and m-nitrotoluenes in air comprising sampling, modifying piezosensor with active sorbent, passing sample along with carrying gas through detection cell, and recording piezosensor signal is characterized by that active sorbent utilized is triton X-100 taken in amount 10-12 mcm, carrying gas is air, which is passed through detection cell before passage of sample, and passage velocity and passage time in both cases are 45-55 cm3/min and 2-3 min. Advantages of the method are: essentially simplified analytical equipment, diminished analysis and modification times, reduced number reagents utilized, lowered determination temperature from 210оС to 20-25оС.;EFFECT: accelerated analytical procedure and reduced expenses.;2 tbl, 7 ex