A label free aptamer-based LPG sensor for detection of mercury in aquatic solutions

Hamed Nikbakht; Hamid Latifi; Farzaneh Ziaee

doi:10.1117/12.2194070

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28 September 2015 A label free aptamer-based LPG sensor for detection of mercury in aquatic solutions

Hamed Nikbakht, Hamid Latifi, Farzaneh Ziaee

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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96344C (2015) https://doi.org/10.1117/12.2194070
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

We demonstrate a label free fiber optic sensor for detection of mercury ions in aquatic solutions. This sensor utilizes aptamers as bio-recognition element which traps mercury ions and cause a refractive index change in the vicinity of the sensor. Refractive index variations lead to a change in the transmission spectrum that can be used to calculate the concentration of mercury ions in that solution. The concentration of 1 nM mercury ions was detected which is below the specific amount determined by the US environmental protection agency as the maximum authorized contaminant level of Hg²⁺ ions in drinking water.

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Hamed Nikbakht, Hamid Latifi, and Farzaneh Ziaee "A label free aptamer-based LPG sensor for detection of mercury in aquatic solutions", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96344C (28 September 2015); https://doi.org/10.1117/12.2194070

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