کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7230871 | 1470952 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fiber optic profenofos sensor based on surface plasmon resonance technique and molecular imprinting
ترجمه فارسی عنوان
حسگر پروفنفوس فیبر نوری براساس تکنیک رزونانس سطح پلاسما و اثر مولکولی
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کلمات کلیدی
فیبر نوری، سنسور، آفت کش ها، رزونانس پلاسما سطحی، واردات مولکولی، پروفنفوس،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
A successful approach for the fabrication and characterization of an optical fiber sensor for the detection of profenofos based on surface plasmon resonance (SPR) and molecular imprinting is introduced. Molecular imprinting technology is used for the creation of three dimensional binding sites having complementary shape and size of the specific template molecule over a polymer for the recognition of the same. Binding of template molecule with molecularly imprinted polymer (MIP) layer results in the change in the dielectric nature of the sensing surface (polymer) and is identified by SPR technique. Spectral interrogation method is used for the characterization of the sensing probe. The operating profenofos concentration range of the sensor is from 10â4 to 10â1 µg/L. A red shift of 18.7 nm in resonance wavelength is recorded for this profenofos concentration range. The maximum sensitivity of the sensor is 12.7 nm/log (µg/L) at 10â4 µg/L profenofos concentration. Limit of detection (LOD) of the sensor is found to be 2.5Ã10â6 µg/L. Selectivity measurements predict the probe highly selective for the profenofos molecule. Besides high sensitivity due to SPR technique and selectivity due to molecular imprinting, proposed sensor has numerous other advantages like immunity to electromagnetic interference, fast response, low cost and capability of online monitoring and remote sensing of analyte due to the fabrication of the probe on optical fiber.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 79, 15 May 2016, Pages 150-157
Journal: Biosensors and Bioelectronics - Volume 79, 15 May 2016, Pages 150-157
نویسندگان
Anand M. Shrivastav, Sruthi P. Usha, Banshi D. Gupta,