کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7148839 | 1462105 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polymerized linseed oil coated quartz crystal microbalance for the detection of volatile organic vapours
ترجمه فارسی عنوان
ریز مغذی کریستال کوارتز پوشش داده شده پلیمریزه شده برای تعیین بخارات آلی فرار
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Quartz crystal microbalance (QCM) sensors are developed from polymerized linseed oil and used for the detection of volatile organic compounds (VOCs) such as p-cresol, o-xylene, benzene, and toluene. The polymer film on QCM surface is synthesized from the free radical polymerization of linseed oil in chloroform using benzoyl peroxide as initiator by dip coating method. The sensitivity, stability and selectivity of the sensors are measured by exposing the QCM surface to vapours. The synthesis of films are optimized and is found to have maximum adsorption of vapours when it is polymerized with 1.7% (w/v) of benzoyl peroxide. Among these four types of vapours, the maximum sensitivity is found with p-cresol and frequency shift of 110Â Hz is obtained for 250Â ppm of p-cresol vapour in nitrogen atmosphere. The sensor responses of concentration ranges from 5 to 250Â ppm are found to be linear. The structure of the polymeric films is confirmed by FTIR analysis. Surface morphologies of the films before and after absorption are studied using AFM. The sensors are reactivated by releasing the adsorbed vapour by passing dry nitrogen gas. The sensing responses of VOC are observed to be substantial and reproducible.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 185, August 2013, Pages 293-300
Journal: Sensors and Actuators B: Chemical - Volume 185, August 2013, Pages 293-300
نویسندگان
Rashmita Das, Sudip Biswas, Rajib Bandyopadhyay, Panchanan Pramanik,