title: Highly selective and sensitive detection of Cu2+ with lysine enhancing bovine serum albumin modified-carbon dots fluorescent probe.
abstract: Based on the ability of lysine (Lys) to enhance the fluorescence intensity of bovine serum albumin modified-carbon dots (CDs-BSA) to decrease surface defects and quench fluorescence of the CDs-BSA-Lys system in the presence of Cu(2+) under conditions of phosphate buffer (PBS, pH = 5.0) at 45 °C for 10 min, a sensitive Lys enhancing CDs-BSA fluorescent probe was designed. The environment-friendly, simple, rapid, selective and sensitive fluorescent probe has been utilized to detect Cu(2+) in hair and tap water samples and it achieved consistent results with those obtained by inductively coupled plasma mass spectroscopy (ICP-MS). The mechanism of the proposed assay for the detection of Cu(2+) is discussed.
authors.affiliation: Department of Chemistry and Environmental Science, Zhangzhou Normal College, PR China. zzsyliujiaming@163.com
authors.forename: Jia-Ming
authors.initials: JM
authors.lastname: Liu
authors.forename: Li-ping
authors.initials: LP
authors.lastname: Lin
authors.forename: Xin-Xing
authors.initials: XX
authors.lastname: Wang
authors.forename: Shao-Qin
authors.initials: SQ
authors.lastname: Lin
authors.forename: Wen-Lian
authors.initials: WL
authors.lastname: Cai
authors.forename: Li-Hong
authors.initials: LH
authors.lastname: Zhang
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Zheng
mesh_terms: D000818:Animals; D002244:Carbon / Q000737:chemistry*; D002417:Cattle; D003300:Copper / Q000032:analysis*; D005456:Fluorescent Dyes / Q000737:chemistry*; D005618:Fresh Water / Q000032:analysis; D006197:Hair / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry; D008239:Lysine / Q000737:chemistry*; D012710:Serum Albumin, Bovine / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013696:Temperature
chemical_list: D005456:Fluorescent Dyes; D007477:Ions; D012710:Serum Albumin, Bovine; D002244:Carbon; D003300:Copper; D008239:Lysine