title: Visual and colorimetric detection of p-aminophenol in environmental water and human urine samples based on anisotropic growth of Ag nanoshells on Au nanorods.
abstract: A simple, sensitive, selective and high-resolution colorimetric method has been developed for the detection of p-aminophenol in environmental water and human urine samples. In the presence of p-aminophenol, silver ions are reduced to silver atoms and subsequently Ag nanoshells anisotropically grow on the surface of Au nanorods to generate orange slice-like Au@Ag core-shell nanocrystals, thereby resulting in the blue-shift of longitudinal surface plasmon resonance band of Au nanorods accompanying a sharp-contrast multicolor change. Using Au@Ag core-shell nanocrystals as the transducer, sub-micromolar p-aminophenol can be detected by the colorimetric method and 10 μmol L(-1) p-aminophenol can be visual readout by the naked eyes. Furthermore, a simple, cheap, portable test kit is constructed for the visual assay of urinary p-aminophenol without complicated sample pretreatment and sophisticated instruments. The proposed colorimetric method has the potential for the rapid and on-site analyses of p-aminophenol in environmental water and human urine samples.
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
authors.forename: Tianran
authors.initials: T
authors.lastname: Lin
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Li
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Song
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
authors.forename: Huan
authors.initials: H
authors.lastname: Chen
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China. Electronic address: lqguo@fzu.edu.cn.
authors.forename: Liangqia
authors.initials: L
authors.lastname: Guo
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
authors.forename: Fengfu
authors.initials: F
authors.lastname: Fu
authors.affiliation: School of Plant Protection, Fujian Agriculture and Forest University, Fuzhou, Fujian 350002, China.
authors.forename: Zujian
authors.initials: Z
authors.lastname: Wu
mesh_terms: D000627:Aminophenols / Q000032:analysis* / Q000652:urine; D003124:Colorimetry / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis / Q000652:urine; D005454:Fluorescence Polarization / Q000379:methods; D006046:Gold / Q000032:analysis* / Q000652:urine; D006801:Humans; D053768:Metal Nanoparticles / Q000032:analysis*; D057145:Nanoshells / Q000032:analysis*; D012834:Silver / Q000032:analysis* / Q000652:urine; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000652:urine
chemical_list: D000627:Aminophenols; D004785:Environmental Pollutants; D014874:Water Pollutants, Chemical; D012834:Silver; D006046:Gold; C026729:4-aminophenol
keywords: Au nanocrystals; Au@Ag nanocystals; Colorimetric detection; P-aminophenol