A Noncontact Dibutyl Phthalate Sensor Based on a Wireless-Electrodeless QCM-D Modified with Nano-Structured Nickel Hydroxide

Dibutyl phthalate (DBP) is a widely used plasticizer which has been found to be a reproductive and developmental toxicant and ubiquitously existing in the air. A highly sensitive method for DBP monitoring in the environment is urgently needed. A DBP sensor based on a homemade wireless-electrodeless...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2017-07, Vol.17 (7), p.1681
Main Authors: Chen, Daqi, Sun, Xiyang, Zhang, Kaihuan, Fan, Guokang, Wang, You, Li, Guang, Hu, Ruifen
Format: Article
Language:English
Subjects:
Chemical industry
Coated electrodes
Crystal structure
Dibutyl phthalate
Environmental monitoring
Nickel compounds
overtone
Quartz
Quartz crystals
Sensors
wireless-electrodeless QCM with dissipation
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Summary:Dibutyl phthalate (DBP) is a widely used plasticizer which has been found to be a reproductive and developmental toxicant and ubiquitously existing in the air. A highly sensitive method for DBP monitoring in the environment is urgently needed. A DBP sensor based on a homemade wireless-electrodeless quartz crystal microbalance with dissipation (QCM-D) coated with nano-structured nickel hydroxide is presented. With the noncontact configuration, the sensing system could work at a higher resonance frequency (the 3rd overtone) and the response of the system was even more stable compared with a conventional quartz crystal microbalance (QCM). The sensor achieved a sensitivity of 7.3 Hz/ppb to DBP in a concentration range of 0.4-40 ppb and an ultra-low detection limit of 0.4 ppb of DBP has also been achieved.
ISSN:1424-8220
1424-8220
DOI:10.3390/s17071681