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We report the lauryl sulphate (LS) modified gold nanoparticles (AuNPs) as a localized surface plasmon resonance (LSPR) based chemical sensor for the colorimetric detection of arsenic in water samples. This colorimetric LSPR based detection of arsenic found to be a simple, selective, sensitive, and can be applied at the sample source. The method was based on the color change of AuNPs from pink to blue...
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