Citation:
LIU Zhen-Bang, MA Ying-Ming, HAN Dong-Xue, DONG Xian-Dui, NIU Li, BAO Yu. Development of A Novel Broadband Adaptive Electrochemical Quartz Crystal Microbalance with Dissipation Monitoring[J]. Chinese Journal of Analytical Chemistry,
;2018, 46(8): 1171-1177.
doi:
10.11895/j.issn.0253-3820.171488
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A new quartz crystal microbalance with dissipation monitoring (QCMD) was developed based on quadrature modulation method. Combined with insert software and hardware circuit, the instrument made automatch and precise calculation of quartz resonate frequency possible within wider range. In the meantime, capacitance compensation circuit was introduced to compensate static capacitance, and thus eliminating the differences under higher viscoelastic loads. Through several tests of viscoelastic loads environment, constantly lower mass loads adding and electrochemical combination, the functionality and performance were proved and verified. The test results showed that, the QCMD instrument had wider frequency of quartz crystal and auto compensation to static capacitance. The accuracy of frequency calculation reached 0.1 Hz, and the instrument could calculate dissipation factors spontaneously and constantly. The homemade QCMD system could be used in combination with multiple electrochemistry methods, exhibiting advantages of lower consumables costs and rich functions.
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