• Open Access

An Amyloid-Fibril-Based Colorimetric Nanosensor for Rapid and Sensitive Chromium(VI) Detection

Authors

  • Wai-Hong Leung,

    1. State Key Laboratory of Chirosciences, Food Safety and Technology Research Centre, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong (P.R. China), Fax: (+852) 2364-9932
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  • Dr. Lan Zou,

    1. State Key Laboratory of Chirosciences, Food Safety and Technology Research Centre, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong (P.R. China), Fax: (+852) 2364-9932
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  • Dr. Wai-Hung Lo,

    Corresponding author
    1. State Key Laboratory of Chirosciences, Food Safety and Technology Research Centre, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong (P.R. China), Fax: (+852) 2364-9932
    • State Key Laboratory of Chirosciences, Food Safety and Technology Research Centre, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong (P.R. China), Fax: (+852) 2364-9932

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  • Dr. Pak-Ho Chan

    Corresponding author
    1. State Key Laboratory of Chirosciences, Food Safety and Technology Research Centre, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong (P.R. China), Fax: (+852) 2364-9932
    • State Key Laboratory of Chirosciences, Food Safety and Technology Research Centre, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong (P.R. China), Fax: (+852) 2364-9932

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Abstract

original image

Appearing with a trace! A new colorimetric nanosensor for CrVI from the amyloid fibrils of hen lysozyme has been developed (see picture). This nanosensor, which makes use of hen lysozyme fibrils as CrVI binders and acidified diphenylcarbazide (DPC) as the colorimetric probe, can specifically detect CrVI at the ppb level without sample pretreatment and the use of advanced instruments.

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