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
| Title | Year | Author | Number |
|---|---|---|---|
| PROCEDURE OF EXAMINATION OF COFFEE | 2002 |
|
RU2214591C1 |
| METHOD OF DETERMINATION OF CONTENT OF NITROBENZENE IN AIR | 1999 |
|
RU2170416C2 |
| METHOD FOR INDUSTRIAL FLAVOURS QUALITY ASSESSMENT | 2007 |
|
RU2328732C1 |
| PROCESS FORMING MATRIX OF SENSORS TO DETERMINE KEY COMPONENT OF GAS EFFLUENTS OF FURNITURE FACTORY | 2001 |
|
RU2193770C1 |
| METHOD OF DETERMINATION OF ADULTERATION OF SEDATIVES BASED ON NATURAL OILS WITH APPLYING CATION OF PIEZOELECTRIC SENSOR ARRAY | 2008 |
|
RU2361206C1 |
| METHOD TO ASSESS SAFETY OF PACKAGING POLYMER MATERIALS FOR THERMAL PROCESSING OF VACUUMISED FOOD PRODUCTS | 2013 |
|
RU2550962C2 |
| METHOD OF DETERMINING PHENOL IN AIR | 2010 |
|
RU2441231C1 |
| METHOD DETECTING NITROMETHANE IN GAS MIXTURE OF AROMATIC NITROHYDROCARBONS | 1998 |
|
RU2143111C1 |
| TEST METHOD FOR DETERMINING DEGREE OF OXIDATIVE RANCIDIFICATION OF ANIMAL FAT | 2005 |
|
RU2296323C1 |
| METHOD FOR EXPRESS ASSESSMENT OF DRY BAKING YEAST QUALITY | 2016 |
|
RU2614667C1 |
