Title
1-Butyl-3-Methylimidazolium Tetrafluoroborate Film as a Highly Selective Sensing Material for Non-Invasive Detection of Acetone Using a Quartz Crystal Microbalance.
Abstract
Breath acetone serves as a biomarker for diabetes. This article reports 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]), a type of room temperature ionic liquid (RTIL), as a selective sensing material for acetone. The RTIL sensing layer was coated on a quartz crystal microbalance (QCM) for detection. The sensing mechanism is based on a decrease in viscosity and density of the [bmim][BF4] film due to the solubilization of acetone leading to a positive frequency shift in the QCM. Acetone was detected with a linear range from 7.05 to 750 ppmv. Sensitivity and limit of detection were found to be 3.49 Hz/ppmv and 5.0 ppmv, respectively. The [bmim][BF4]-modified QCM sensor demonstrated anti-interference ability to commonly found volatile organic compounds in breath, e.g., isoprene, 1,2-pentadiene, d-limonene, and dl-limonene. This technology is useful for applications in non-invasive early diabetic diagnosis.
Year
DOI
Venue
2017
10.3390/s17010194
Sensors
Keywords
Field
DocType
1-butyl-3-methylimidazolium tetrafluoroborate,acetone,non-invasive sensing,quartz crystal microbalance
Tetrafluoroborate,Detection limit,Acetone,Analytical chemistry,Quartz crystal microbalance,Chemistry,Ionic liquid,Linear range,Isoprene,Quartz Crystal Microbalance Techniques
Journal
Volume
Issue
ISSN
17
1
1424-8220
Citations 
PageRank 
References 
0
0.34
2
Authors
6
Name
Order
Citations
PageRank
Wenyan Tao100.34
Peng Lin201.35
Sili Liu300.34
Qingji Xie401.35
Shanming Ke501.01
Xierong Zeng602.03