title: A cross-reactive sensor array for the fluorescence qualitative analysis of heavy metal ions.
abstract: A cross-reactive sensor array using mercaptopropionic acid modified cadmium telluride (CdTe), glutathione modified CdTe, poly(methacrylic acid) modified silver nanoclusters, bovine serum albumin modified gold nanoclusters, rhodamine derivative and calcein blue as fluorescent indicators has been designed for the detection of seven heavy metal ions (Ag(+), Hg(2+), Pb(2+), Cu(2+), Cr(3+), Mn(2+) and Cd(2+)). The discriminatory capacity of the sensor array to different heavy metal ions in different pH solutions has been tested and the results have been analyzed with linear discriminant analysis. Results showed that the sensor array could be used to qualitatively analyze the selected heavy metal ions. The array performance was also evaluated in the identification of known and unknown samples and the preliminary results suggested the promising practicability of the designed sensor assay.
authors.affiliation: Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
authors.forename: Huaizhi
authors.initials: H
authors.lastname: Kang
authors.affiliation: Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Lin
authors.affiliation: Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
authors.forename: Mingcong
authors.initials: M
authors.lastname: Rong
authors.affiliation: Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China. Electronic address: xichen@xmu.edu.cn.
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
mesh_terms: D000818:Animals; D015374:Biosensing Techniques; D019187:Cadmium Compounds / Q000737:chemistry; D002417:Cattle; D005452:Fluoresceins / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry; D005978:Glutathione / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007477:Ions; D019216:Metals, Heavy / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology; D012235:Rhodamines / Q000737:chemistry; D012710:Serum Albumin, Bovine / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013691:Tellurium / Q000737:chemistry
chemical_list: D019187:Cadmium Compounds; D005452:Fluoresceins; D005456:Fluorescent Dyes; D007477:Ions; D019216:Metals, Heavy; D012235:Rhodamines; D012710:Serum Albumin, Bovine; D012834:Silver; D006046:Gold; D005978:Glutathione; D013691:Tellurium; C028337:cadmium telluride; C007740:fluorexon
keywords: Cross-reactive sensor array; Fluorescence spectroscopy; Heavy metal ions; Qualitative analysis