METHOD OF DETERMINING SUMMARY CONTENT OF NITRO-C1-C3-ALKANES IN WORKING ZONE AIR Russian patent published in 2003 - IPC

FIELD: analytical methods. SUBSTANCE: method comprising sampling, preparing sample, and analytic procedure is distinguished by that, for measuring concentration of nitro-C1-C3-alkanes, piezoelectric sensors are utilized, whose electrodes are modified with aqueous solution of "Proksanol 268" in amounts 5 to 12 mcg, dried at 50-60 C, placed in cell, held for 5-10 min, after which starting sensor and working (10-30 sec after start) oscillation frequencies are registered. Method can be applied at nitrolacquer production, pharmaceutical, and perfumery enterprises. EFFECT: enabled determination of summary content of nitro-C1-C3-alkanes, accelerated analytic procedure, and eliminated use of chemicals. 2 tbl, 8 ex