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Use of Gold Nanoparticles in a Simple Colorimetric and Ultrasensitive Dynamic Light Scattering Assay: Selective Detection of Arsenic in Groundwater
Author(s) -
Kalluri Jhansi Rani,
Arbneshi Tahir,
Afrin Khan Sadia,
Neely Adria,
Candice Perry,
Varisli Birsen,
Washington Marla,
McAfee Shardae,
Robinson Britinia,
Banerjee Santanu,
Singh Anant Kumar,
Senapati Dulal,
Ray Paresh Chandra
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200903958
Subject(s) - arsenic , colloidal gold , tap water , dynamic light scattering , arsenic contamination of groundwater , chemistry , chromatography , nanoparticle , bottled water , colorimetry , environmental chemistry , materials science , environmental science , nanotechnology , environmental engineering , organic chemistry
Low level : The amount of arsenic in Bangladeshi well water and in bottled drinking water and Mississippi tap water are indicated by a dynamic light scattering (DLS) assay. Label‐free gold nanoparticles are used in a selective colorimetric assay (see picture) and in a highly sensitive DLS assay for the recognition of arsenic in concentrations as low as 3 ppt.