TY - JOUR
T1 - Detection of polar organic vapours with piezoelectric crystals coated with crown ethers
AU - Chia-Jung, Lu
AU - Jeng-Shong, Shih
N1 - Funding Information:
The authors would like to express their appreciation to the National Science Council of the Republic of China for financial support.
PY - 1995/4/28
Y1 - 1995/4/28
N2 - An oscillating piezoelectric crown-ether-coated quartz crystal membrane detector with a computer interface for signal processing was prepared to detect polar organic vapours. The piezoelectric crown ether/quartz membrane detector exhibited high sensitivity with a frequency shift range of 10-340 Hz/(mg/l) for organic gases, a short response time (< 2.0 min), good selectivity and good reproducibility for reusage. Several coatings on quartz membrane crystals based on benzo-15-crown-5 and cryptand-22 were made for responses to organic amines, alcohols, ketones, halides, carboxylic acids and sulfides. Benzo-15-crown-5 functioned as a sensitive coating for alcohols, amines and organic sulfides whereas cryptand-22 was sensitive to amines and carboxylic acids. Steric effects and isomer effects on frequency shifts of the quartz crystal detector based on benzo-15-crown-5 for alcohols and amines were also investigated.
AB - An oscillating piezoelectric crown-ether-coated quartz crystal membrane detector with a computer interface for signal processing was prepared to detect polar organic vapours. The piezoelectric crown ether/quartz membrane detector exhibited high sensitivity with a frequency shift range of 10-340 Hz/(mg/l) for organic gases, a short response time (< 2.0 min), good selectivity and good reproducibility for reusage. Several coatings on quartz membrane crystals based on benzo-15-crown-5 and cryptand-22 were made for responses to organic amines, alcohols, ketones, halides, carboxylic acids and sulfides. Benzo-15-crown-5 functioned as a sensitive coating for alcohols, amines and organic sulfides whereas cryptand-22 was sensitive to amines and carboxylic acids. Steric effects and isomer effects on frequency shifts of the quartz crystal detector based on benzo-15-crown-5 for alcohols and amines were also investigated.
KW - Crown ethers
KW - Organic vapour detector
KW - Piezoelectric sensors
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U2 - 10.1016/0003-2670(94)00676-D
DO - 10.1016/0003-2670(94)00676-D
M3 - Article
AN - SCOPUS:0028916206
VL - 306
SP - 129
EP - 137
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
SN - 0003-2670
IS - 1
ER -