title: A simple visual and highly selective colorimetric detection of Hg2+ based on gold nanoparticles modified by 8-hydroxyquinolines and oxalates.
abstract: Gold nanoparticles (AuNPs) modified by 8-hydroxy-quinoline (8-HQ) and stabilized by polyvinylpyrrolidone (PVP) were used for highly selective and sensitive colorimetric detection of Hg(2+) based on the quick aggregation of AuNPs leading to a color change from wine red to gray. The limit of Hg(2+) detection in real environmental water samples is 4.0 × 10(-7) M by the naked eyes and 1.0 × 10(-8) M by UV-vis spectroscopy.
authors.affiliation: Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China. lixing@nbu.edu.cn.
authors.forename: Yuexia
authors.initials: Y
authors.lastname: Gao
authors.forename: Xing
authors.initials: X
authors.lastname: Li
authors.forename: Yonglong
authors.initials: Y
authors.lastname: Li
authors.forename: Tianhua
authors.initials: T
authors.lastname: Li
authors.forename: Yayun
authors.initials: Y
authors.lastname: Zhao
authors.forename: Aiguo
authors.initials: A
authors.lastname: Wu