Citation: Li Shi WANG, Hong Mei WEI, Wei Qi MA, Bao Gui ZHANG, Jian Xing FENG, Guo Xi WANG. Datection of Carboxylic Acid Vapours Using Piezoelectric Crystals with Crown Ether Coatings[J]. Chinese Chemical Letters, ;1997, 8(4): 335-338. shu

Datection of Carboxylic Acid Vapours Using Piezoelectric Crystals with Crown Ether Coatings

a Department of Environmental Science, Nankai University, Tianjin 300071;
b Anyiang University, Anyiang, Henan Province 455000

Received Date: 18 November 1996

This work describes three crown ether-coated piezoelectric crystal sensors for detection of carboxylic acid vapours.All three have excellent reproducibility and stability (lasting for at least 100 days).Two of them show good sensitivity (137-1500Hz/mg/L) and high selectivity.Cis-diamino-dibenzo-18-crown-6 can be used as the coating material for the detection of formic acid.The effect of crown ethers structure on the detection sensitivity and selectivity for acid vapours was discussed.
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