title: Rapid visual detection of aluminium ion using citrate capped gold nanoparticles.
abstract: We report the visual detection of Al(3+) using unlabeled gold nanoparticles (AuNPs) based on the complexation of Al(3+) with citric acid, resulting in the aggregation of AuNPs. The distinction of color change can be observed by the naked eye at concentrations down to 1.0 μM which is lower than the permissable level (7.4 μM) for drinking water as defined by the World Health Organization.
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Determination for Food Safety, College of Chemistry & Chemical Engineering, Department of Chemistry, Fuzhou University, Fuzhou, 350108, China.
authors.forename: Shan
authors.initials: S
authors.lastname: Chen
authors.forename: Yi-Min
authors.initials: YM
authors.lastname: Fang
authors.forename: Qing
authors.initials: Q
authors.lastname: Xiao
authors.forename: Ju
authors.initials: J
authors.lastname: Li
authors.forename: Song-Bo
authors.initials: SB
authors.lastname: Li
authors.forename: Hong-Ju
authors.initials: HJ
authors.lastname: Chen
authors.forename: Jian-Jun
authors.initials: JJ
authors.lastname: Sun
authors.forename: Huang-Hao
authors.initials: HH
authors.lastname: Yang
mesh_terms: D000535:Aluminum / Q000032:analysis* / Q000737:chemistry*; D002951:Citrates / Q000737:chemistry*; D003116:Color; D003124:Colorimetry / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D019370:Observation; D013997:Time Factors
chemical_list: D002951:Citrates; D006046:Gold; D000535:Aluminum