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Albumin capped carbon-gold (C-Au) nanocomposite as an optical sensor for the detection of Arsenic(III)
Punuri Jayasekhar Babu,
Published in Elsevier B.V.
2018
Volume: 84
   
Pages: 339 - 344
Abstract
A sensitive arsenic (III) (As(III)) detection method based on the fluorescence quenching system using bovine serum albumin (BSA) capped carbon-gold composite (C-Au-BSA) was developed. BSA could attach to the surface of C-Au composite and increase the photoluminescence (PL) efficiency, As(III) could combine with BSA and remove it from C-Au composite to decrease the PL efficiency. A linear relationship was observed between (As(III)) concentration and PL quenching at low concentrations (5–50 ppb - for drinking and bore water detection) and high concentrations (100–800 ppb - sedimentary arsenic) of the metal. The limit of detection was more superior (low conc; R2 = 0.96 with sensitivity 0.004 ppb, high conc; R2 = 0.98 with sensitivity 0.0002) when compared to other techniques. Thus, this method can be applied to determine low levels as well as sedimentary levels of As(III). © 2018 Elsevier B.V.
About the journal
JournalData powered by TypesetOptical Materials
PublisherData powered by TypesetElsevier B.V.
ISSN09253467
Open AccessNo
Concepts (20)
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    Biosensors
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    Body fluids
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    Carbon
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    Efficiency
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    Fluorescence quenching
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    Gold
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    Nanosensors
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    Optical materials
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    Optical sensors
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    Potable water
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    Sedimentology
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    ARSENIC(III)
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    Bovine serum albumins
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    Detection methods
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    Limit of detection
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    Linear relationships
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    Low concentrations
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    Photoluminescence efficiency
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    POLYMERIC COMPOSITES
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    Gold compounds