The fabrication and characterization of a formaldehyde odor sensor using molecularly imprinted polymers.
The fabrication and characterization of odor sensors based on molecularly imprinted polymers is reported as the first case of imprinting formaldehyde. A quartz crystal microbalance is employed as a sensitive apparatus of a sensor for the determination of odor formaldehyde. An equation is deduced to characterize the interaction between molecularly imprinted films and the template. A linear relationship between the frequency shifts and the concentration of analyte in the range of 1.25 to 14.25 microM is found. The detection limit is about 20.5 microM. The sensor can selectively distinguish gaseous formaldehyde. It is envisaged that this novel and handy method could be employed to determine formaldehyde gas in the atmosphere.
Feng
Liang
L
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China.
Liu
Yongjun
Y
Zhou
Xiaodong
X
Hu
Jiming
J
D000397:Air Pollution / Q000032:analysis; D015374:Biosensing Techniques / Q000295:instrumentation*; D005557:Formaldehyde / Q000032:analysis*; D009812:Odorants / Q000032:analysis*; D011108:Polymers / Q000737:chemistry*; D011791:Quartz; D012997:Solvents / Q000737:chemistry; D013499:Surface Properties
D011108:Polymers; D012997:Solvents; D011791:Quartz; D005557:Formaldehyde