title: Gold nanorods for surface Plasmon resonance detection of mercury (II) in flow injection analysis.
abstract: This article investigates the flow injection analysis of mercury (II) ions in tap water samples via surface Plasmon resonance detection. Quantitative analysis of mercury (II) is based on the chemical interaction of metallic mercury with gold nanorods immobilized on a glass substrate. A new flow cell design is presented with the ability to accommodate the detecting substrate in the sample compartment of commercial spectrometers. Two alternatives are here considered for mercury (II) detection, namely stop-flow and continuous flow injection analysis modes. The best limit of detection (2.4 ng mL(-1)) was obtained with the continuous flow injection analysis approach. The accurate determination of mercury (II) ions in samples of unknown composition is demonstrated with a fortified tap water sample.
authors: Department of Chemistry, University of Central Florida, P.O. Box 25000, Orlando, FL 32816-2366, USA. Electronic address: khangtrieu818@knights.ucf.edu.
authors: Khang
authors: K
authors: Trieu
authors: Department of Chemistry, University of Central Florida, P.O. Box 25000, Orlando, FL 32816-2366, USA. Electronic address: Emily.Heider@ucf.edu.
authors: Emily C
authors: EC
authors: Heider
authors: Oak Ridge National Laboratory, Environmental Sciences Division, P.O. Box 2008, MS 6038, Oak Ridge, TN 37831-6038, USA. Electronic address: brookssc@ornl.gov.
authors: Scott C
authors: SC
authors: Brooks
authors: Laboratório de Toxicologia e Essencialidade de Metais, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, Monte Alegre, 1404903 Ribeirão Preto-SP, Brazil. Electronic address: fbarbosa@fcfrp.usp.br.
authors: Fernando
authors: F
authors: Barbosa
authors: Department of Chemistry, University of Central Florida, P.O. Box 25000, Orlando, FL 32816-2366, USA. Electronic address: andres.campiglia@ucf.edu.
authors: Andres D
authors: AD
authors: Campiglia
mesh_terms: D002138:Calibration; D060766:Drinking Water / Q000032:analysis / Q000737:chemistry; D017022:Flow Injection Analysis / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry; D043942:Nanotubes / Q000737:chemistry*; D015203:Reproducibility of Results; D013053:Spectrophotometry / Q000379:methods; D020349:Surface Plasmon Resonance / Q000379:methods*; D014881:Water Supply / Q000032:analysis
chemical_list: D060766:Drinking Water; D006046:Gold; D008628:Mercury
keywords: Flow injection analysis; Gold nanorods; Localized surface Plasmon resonance; Mercury; Sensors