FIELD: analytical methods.
SUBSTANCE: when determining acetonitrile in the air working zones of furniture plants and pharmaceutical and varnish-and-paint enterprises, air sample is added to detection cell containing piezoelectric quartz resonator with its electrodes preliminarily coated with 15-25 mcg active sorbent (squalane) film. From difference of oscillation frequency before and after addition of the sample, one calculates resonator response and finds content of acetonitrile from equation: ΔF = 2.36-CA, where ΔF is response of modified piezoquartz resonator, Hz, and CA is concentration of acetonitrile in air sample, mg/m3.
EFFECT: accelerated analytical procedure, avoided use of reagents in sample preparation stage, and simplified analytical equipment.
2 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF ASSESSING ACETIC ACID VAPORS IN WORKING ZONE AIR | 2004 |
|
RU2263908C1 |
| METHOD FOR DETERMINING FUMES OF BUTYRIC ACID IN PRESENCE OF PALMITIC ACID AND STEARIC ACID IN THE AIR OF WORK ZONE | 2005 |
|
RU2281483C1 |
| METHOD OF DETERMINING FORMIC ACID VAPORS IN WORKING ZONE AIR | 2004 |
|
RU2265834C1 |
| METHOD OF DETERMINATION OF CONTENT OF METHYL ETHYLENE KETONE IN AIR | 2003 |
|
RU2239183C1 |
| METHOD FOR TOTAL DETERMINATION OF C -C -ALKYL ACETATE WORKING ZONE AIR | 2003 |
|
RU2241696C1 |
| METHOD OF SEPARATE DETERMINATION OF ACETONE AND ETHYL ACETATE IN AIR | 2002 |
|
RU2204126C1 |
| METHOD FOR DETERMINING FUMES OF ACETALDEHYDE IN THE AIR OF WORKZONE | 2005 |
|
RU2284031C1 |
| METHOD OF DETERMINING VAPORS OF PIONIC ACID IN AIR OF WORKING AREA | 2005 |
|
RU2277237C1 |
| METHOD OF DETECTING LACTIC ACID VAPOUR IN AROMA OF TRUE MILK SOLUTION | 2007 |
|
RU2358263C1 |
| METHOD OF TRUE MILK SOLUTION FLAVOUR ANALYSIS FOR FORMALDEHYDE VAPOUR CONTENT | 2007 |
|
RU2351923C1 |
