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Sensors 2017, 17(7), 1681; https://doi.org/10.3390/s17071681

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

1
State Key Laboratory of Industrial Control Technology, Institute of Cyber Systems and Control, Zhejiang University, Hangzhou 310027, China
2
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
*
Author to whom correspondence should be addressed.
Received: 23 June 2017 / Revised: 15 July 2017 / Accepted: 19 July 2017 / Published: 21 July 2017
(This article belongs to the Section Chemical Sensors)
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Abstract

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. View Full-Text
Keywords: wireless-electrodeless QCM with dissipation; dibutyl phthalate; overtone wireless-electrodeless QCM with dissipation; dibutyl phthalate; overtone
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Chen, D.; Sun, X.; Zhang, K.; Fan, G.; Wang, Y.; Li, G.; Hu, R. A Noncontact Dibutyl Phthalate Sensor Based on a Wireless-Electrodeless QCM-D Modified with Nano-Structured Nickel Hydroxide. Sensors 2017, 17, 1681.

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