کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5007234 | 1461605 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface plasmon resonance sensor based on golden nanoparticles and cold vapour generation technique for the detection of mercury in aqueous samples
ترجمه فارسی عنوان
سنسور رزونانس سطح پلاسما بر پایه نانوذرات طلایی و روش تولید بخار سرد برای تشخیص جیوه در نمونه های آبی
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کلمات کلیدی
رزونانس پلاسما سطحی، نانوذرات طلا، حسگر جیوه،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
چکیده انگلیسی
In this work, a surface plasmon resonance sensor for determination of Hg based on golden nanoparticles was developed. The sensor follows the change of the signal from solutions in contact with atomic mercury previously generated by the reaction with sodium borohydride. Mie theory predicts that Hg film, as low as 5Â nm, induced a significant reduction of the surface plasmon resonance signal of 40Â nm golden nanoparticles. This property was used for quantification purposes in the sensor. The device provide limits of detection of 172Â ng/L that can compared with the 91Â ng/L obtained with atomic fluorescence, a common technique used for Hg quantification in drinking water. This result was relevant, considering that it was not necessary to functionalize the nanoparticles or use nanoparticles deposited in a substrate. Also, thanks that Hg is released from the matrix, the surface plasmon resonance signal was not affected by concomitant elements in the sample.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 94, 1 September 2017, Pages 34-39
Journal: Optics & Laser Technology - Volume 94, 1 September 2017, Pages 34-39
نویسندگان
Jimmy Castillo, José Chirinos, Héctor Gutiérrez, Marie La Cruz,