PVDF coated quartz crystal microbalance sensor for DMMP vapor detection

Ying, Zhihua; Jiang, Yadong; Du, Xiaosong; Xie, Guangzhong; Yu, Junsheng; Wang, Hua

doi:10.1016/j.snb.2007.02.002

Cited by 86 publications

(42 citation statements)

References 31 publications

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“…For example, a poly(vinylidene fluoride) (PVDF)-coated quartz crystal microbalance sensor has a calculated LOD of 0.94 ppm [31] ; a chemicapacitor filled with siloxanefluoro alcohol (SXFA) has demonstrated a lowest detected concentration of 0.18 ppm and a calculated LOD of 2 ppb [32] ; and the calculated LOD for a single-walled carbon nanotube capacitor coated with a thin polycarbosilane coating is 0.5 ppb. [33] …”

Section: Response Of the Double-stack Sensor To Nerve Agent Simulantmentioning

confidence: 99%

Humidity‐Compensating Sensor for Volatile Organic Compounds Using Stacked Porous Silicon Photonic Crystals

Ruminski

Moore

Sailor

2008

Adv Funct Materials

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One‐dimensional photonic crystals constructed from multilayered stacks of porous Si are used as sensors for gas‐phase volatile organic compounds (VOCs). The ability of a double‐stack structure to provide compensation for drift due to changing relative humidity (RH) is investigated. In this approach, two separate photonic crystals (dielectric stacks) are etched into a crystalline Si substrate, one on top of the other. The top stack is chemically modified to be hydrophobic (by hydrosilylation with dodecene) and the bottom stack is made hydrophilic (by hydrosilylation with undecylenic acid). It is shown that the optical spectrum of the double‐stack structure provides an effective means to discriminate VOCs from water vapor. In this approach, shifts in the peak frequencies from both photonic crystals are measured simultaneously. Because the two stacks respond differently to water and to VOC, the effect of changing humidity can be nulled by calculating the weighted difference between the two peak frequencies. Reliable determination of the concentration of VOC vapor in nitrogen over a range of RH values (25% < RH < 75%) is demonstrated. The ability of the double‐stack structure to discriminate between water vapor and VOCs is quantified for four different VOCs: toluene, dimethyl methylphosphonate (DMMP), heptane, and ethanol.

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Section: Response Of the Double-stack Sensor To Nerve Agent Simulantmentioning

confidence: 99%

Humidity‐Compensating Sensor for Volatile Organic Compounds Using Stacked Porous Silicon Photonic Crystals

Ruminski

Moore

Sailor

2008

Adv Funct Materials

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“…Several studies dealing with QCM sensors have presented a very good linear correlation in frequency shift versus concentrations of target substances within a specific range [27][28][29]. In this study, the linearity in the frequency-shift rate versus solution concentration was evaluated using different concentrations of palmitic acid solutions at pH 10.7.…”

Section: Linear Range and Selectivity Of The Sensormentioning

confidence: 99%

A Simple Method for the Detection of Long-Chain Fatty Acids in an Anaerobic Digestate Using a Quartz Crystal Sensor

et al. 2016

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Abstract:In anaerobic digestion (AD), long-chain fatty acids (LCFAs) produced by hydrolysis of lipids, exhibit toxicity against microorganisms when their concentration exceeds several millimolar. An absorption detection system using a quartz crystal microbalance (QCM) was developed to monitor the LCFA concentration during an anaerobic digester's operation treating oily organic waste. The dissociation of the LCFAs considerably improved the sensor response and, moreover, enabled it to specifically detect LCFA from the mixture of LCFA and triglyceride. Under alkaline conditions, the frequency-shift rates of the QCM sensor linearly increased in accordance with palmitic acid concentration in the range of 0-100 mg/L. Frequency changes caused by anaerobic digestate samples were successfully measured after removing suspended solids and adjusting the pH to 10.7. Finally, the QCM measurements for digestate samples demonstrated that frequency-shift rates are highly correlated with LCFA concentrations, which confirmed that the newly developed QCM sensor is helpful for LCFA monitoring in terms of rapidness and usability.

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“…Jiang and coworkers prepared a polymer film-coated quartz resonator for detecting dimethyl methylphosphonate (DMMP) vapor as a stimulant of nerve agents. The polyvinylidene fluoride (PVDF) film-coated quartz resonator was found to be sensitive to DMMP vapor at 5-60 ppm with a rapid and reversible response (Ying et al, 2007). A zeolite film was also utilized as a coating of QCM for detecting DMMP (Xie et al, 2005).…”

Section: Miscellaneous Biosensors For Op Detectionmentioning

confidence: 99%

Biosensors for the Detection of OP Nerve Agents

Anzai¹

2015

Handbook of Toxicology of Chemical Warfare Agents

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PVDF coated quartz crystal microbalance sensor for DMMP vapor detection

Cited by 86 publications

References 31 publications

Humidity‐Compensating Sensor for Volatile Organic Compounds Using Stacked Porous Silicon Photonic Crystals

Humidity‐Compensating Sensor for Volatile Organic Compounds Using Stacked Porous Silicon Photonic Crystals

A Simple Method for the Detection of Long-Chain Fatty Acids in an Anaerobic Digestate Using a Quartz Crystal Sensor

Biosensors for the Detection of OP Nerve Agents

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