DocumentCode :
3565378
Title :
Characterization of acrylate-based ChemFET sensor for nitrate sensing and monitoring
Author :
Nazarudin, Nor Farhana ; Mohd Noor, Mohd Adam ; Rashid, Nora´zah Abdul ; Witjaksono, Gunawan ; Nayan, Nazrul Anuar
Author_Institution :
MIMOS Berhad, Technol. Park Malaysia, Kuala Lumpur, Malaysia
fYear :
2014
Firstpage :
154
Lastpage :
158
Abstract :
Solid-state nitrate ion sensor or nitrate-ChemFET (N-ChemFET) based on polymeric membrane materials was fabricated and developed for the determination of nitrate ion in aqueous solution. The membrane materials used consisted of methyl-methacrylate (MMA) and tetrahydrofurfuryl-acrylate (THFA) as copolymers, tetraoctylammonium nitrate (TOAN) as an ion-exchanger and other lipophilic additives. N-ChemFET characterizations included a study on sensitivity, pH effect, interference, temperature effect and lifetime demonstrated good performance of N-ChemFET in sensing nitrate as an ion of interest. N-ChemFET sensor showed a lifetime of at least 3 months at room temperature (RT) where no leaching and detachment of the membrane layer occurred. Therefore, this requirement is applicable for the purpose of sensor application in the industry for monitoring the level of nitrate in aquatic environment by periodical measurement method.
Keywords :
chemical sensors; ion exchange; nitrogen compounds; pH; polymer blends; NO3-; acrylate-based ChemFET sensor characterization; aquatic environment; aqueous solution; ion-exchanger; lipophilic additives; methyl-methacrylate; nitrate monitoring; nitrate sensing; pH effect; periodical measurement method; polymeric membrane materials; solid-state nitrate ion sensor; temperature 293 K to 298 K; temperature effect; tetrahydrofurfuryl-acrylate; tetraoctylammonium nitrate; time 3 month; Biomembranes; Logic gates; Polymers; Sensitivity; Temperature measurement; Temperature sensors; ChemFET; acrylate; nitrate monitoring; nitrate sensor; plasticizer-free;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Biomedical Engineering and Sciences (IECBES), 2014 IEEE Conference on
Type :
conf
DOI :
10.1109/IECBES.2014.7047476
Filename :
7047476
Link To Document :
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