title: Resonance light scattering determination of metallothioneins using levofloxacin-palladium complex as a light scattering probe.
abstract: A novel method of resonance light scattering (RLS) was developed for the analysis of trace metallothioneins (MTs) in human urine. In a CH(3)COOH-CH(3)COONa buffer solution of pH 4.5, the formation of a complex between levofloxacin (LEV)-Pd and MTs led to enhance the RLS intensity of the system, and the enhanced RLS intensity at 468 nm was proportional to the concentration of MTs in the range of 0.059-22.4 μg mL(-1). The linear regression equation was ΔI=127.5 ρ (μg mL(-1))-88.02 with a correlation coefficient of 0.9992, and the detection limit of 17.8 ng mL(-1). The relative standard deviation and the average recovery were 3.8-5.4% (n=11) and 92.15%, respectively. The proposed method is convenient, reliable and sensitive, and has been used successfully for the determination of trace MTs in human urine samples.
authors.affiliation: College of Public Health, University of South China, Hengyang 421001, PR China.
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Xue
authors.forename: Qiu-Mei
authors.initials: QM
authors.lastname: Qian
authors.forename: Yong-Sheng
authors.initials: YS
authors.lastname: Wang
authors.forename: Xia-Ling
authors.initials: XL
authors.lastname: Meng
authors.forename: Lu
authors.initials: L
authors.lastname: Liu
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D064704:Levofloxacin; D008027:Light; D057230:Limit of Detection; D008668:Metallothionein / Q000737:chemistry / Q000652:urine*; D015242:Ofloxacin / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D012542:Scattering, Radiation; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet
chemical_list: D056831:Coordination Complexes; D010165:Palladium; D064704:Levofloxacin; D008668:Metallothionein; D015242:Ofloxacin