title: Cationic polymers and aptamers mediated aggregation of gold nanoparticles for the colorimetric detection of arsenic(III) in aqueous solution.
abstract: As(III) specifically interacts with an arsenic-binding aptamer to form an As(III)-aptamer complex, so that the following cationic polymer can aggregate gold nanoparticles (AuNPs) and cause a remarkable change in color, which enables the colorimetric detection of As(III) with high selectivity and a detection limit of 5.3 ppb.
authors.affiliation: School of Environmental Science and Engineering, and Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Yuangen
authors.initials: Y
authors.lastname: Wu
authors.forename: Shenshan
authors.initials: S
authors.lastname: Zhan
authors.forename: Faze
authors.initials: F
authors.lastname: Wang
authors.forename: Lan
authors.initials: L
authors.lastname: He
authors.forename: Wenting
authors.initials: W
authors.lastname: Zhi
authors.forename: Pei
authors.initials: P
authors.lastname: Zhou
mesh_terms: D052157:Aptamers, Nucleotide / Q000737:chemistry*; D001151:Arsenic / Q000032:analysis* / Q000737:chemistry; D015374:Biosensing Techniques; D003124:Colorimetry / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012996:Solutions; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry
chemical_list: D052157:Aptamers, Nucleotide; D011108:Polymers; D012996:Solutions; D014874:Water Pollutants, Chemical; D014867:Water; D006046:Gold; D001151:Arsenic