Carcinogenic chromium (VI) sensing using swelling characteristics of hydrogel on Fiber Bragg grating

Aruna N

doi:10.1117/12.2615862

27 October 2021 Carcinogenic chromium (VI) sensing using swelling characteristics of hydrogel on Fiber Bragg grating

Aruna N

Proceedings Volume 11925, Biomedical Imaging and Sensing Conference 2021; 119251C (2021) https://doi.org/10.1117/12.2615862
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

The present article proposes carcinogenic Chromium (VI) metal ion sensor by a hydrogel coated etched Fiber Bragg grating (FBG). Hydrogel synthesized from the blends of 3-arylamidopropyltrimethylammoniumchloride (ATAC) which is stimulus responsive to chromium ions suffers a volume change in different Cr solutions. Upon exposure to various concentrations of Cr (VI) ion solutions, FBG peak is shifted due to the mechanical strain induced by the stimulus swelling property of the hydrogel. The peak shift is correlated with the concentration of the Cr (VI) metal ion. Thus a Chemo-mechanical- optical sensing approach for the detection of Cr (VI) is studied. Trace amounts of Chromium (VI) ion as low as 10 ppb can be estimated by the method. The resolution of the sensor system is found to be 0.05 ppb.

Citation Download Citation

Aruna N "Carcinogenic chromium (VI) sensing using swelling characteristics of hydrogel on Fiber Bragg grating", Proc. SPIE 11925, Biomedical Imaging and Sensing Conference 2021, 119251C (27 October 2021); https://doi.org/10.1117/12.2615862

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KEYWORDS

Chromium

Fiber Bragg gratings

Ions

Sensors

Metals

Biological and chemical sensing

Polymers

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