title: Picomolar detection of mercuric ions by means of gold-silver core-shell nanorods.
abstract: We report an ultrasensitive and selective probe for detection of mercuric ions using gold-silver core-shell nanorods as the substrate of surface-enhanced Raman scattering. The detection limit of this probe for mercuric ions can be as low as 1 pM. The efficiency of this probe in complex samples was evaluated by allowing detection of spiked mercuric ions in river water and fish samples.
authors.affiliation: Department of Bio-Nano-Science and Engineering, Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Institute of Micro-Nano Science and Technology, Shanghai Jiaotong University, Shanghai 200240, China.
authors.forename: Shouhui
authors.initials: S
authors.lastname: Chen
authors.forename: Dingbin
authors.initials: D
authors.lastname: Liu
authors.forename: Zhihua
authors.initials: Z
authors.lastname: Wang
authors.forename: Xiaolian
authors.initials: X
authors.lastname: Sun
authors.forename: Daxiang
authors.initials: D
authors.lastname: Cui
authors.forename: Xiaoyuan
authors.initials: X
authors.lastname: Chen