FIELD: analytical chemistry.
SUBSTANCE: selected sample is injected into detecting cell with piezo-quartz resonator, electrodes of which are previously modified by a solution Tween-40 (polyoxiethylenesorbitolmonopalmitate) in chloroform so that mass of film after removal of solvent is 15-20 micrograms. For aforementioned purpose film of modifier is dried at 40°C for 30 minutes. Registration of analytical signal is performed in form of response of modified electrodes of piezo-quartz resonator after injection of probe into detection cell, calculation of acetaldehyde concentration is performed using formula ΔF=4,1·c, where ΔF - response of modified piezo-quartz resonator, Hz; c - concentration of acetaldehyde, mg/m3.
EFFECT: decreased time spent on determining acetaldehyde and decreased error of determining process.
2 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| 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 DETERMINATION OF THE VAPORS OF THE ACETIC ALDEHYDE IN THE AROMA OF THE CURD WHEY | 2006 |
|
RU2315985C1 |
| METHOD OF ASSESSING ACETIC ACID VAPORS IN WORKING ZONE AIR | 2004 |
|
RU2263908C1 |
| METHOD OF FINDING VAPORS OF OIL ACID IN AROMA OF CHEESE SERUM | 2005 |
|
RU2277236C1 |
| 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 |
| METHOD OF DETERMINING VAPORS OF PIONIC ACID IN AIR OF WORKING AREA | 2005 |
|
RU2277237C1 |
| METHOD OF DETERMINING FORMIC ACID VAPORS IN WORKING ZONE AIR | 2004 |
|
RU2265834C1 |
| METHOD OF DETECTING METHYL ACETATE VAPOUR IN PRESENCE OF BENZYL ACETATE IN WORKPLACE AIR | 2009 |
|
RU2396555C1 |
| METHOD FOR TOTAL DETERMINATION OF C -C -ALKYL ACETATE WORKING ZONE AIR | 2003 |
|
RU2241696C1 |
