title: A study of the chemiluminescence behavior of cephalosporins with luminol and its analytical application.
abstract: The chemiluminescence intensity of luminol-dissolved oxygen was decreased when cephalosporins were mixed with luminol. The decrease chemiluminescence intensity was linear with the logarithm of cephalosporins concentration over the range from nanogram to microgramme level, with the limits of detection at nanogram level. The sensitivities of determination for cephalosporins were in the order of cefoperazone > ceftriaxone > cefuroxime > cefaclor > cefalexin > cefradine. The proposed method was applied to monitor the excretion of cefradine in human urine after taken cefradine capsules. The possible chemiluminescence mechanism and relationship between the determination sensitivities and generations of cephalosporins were also discussed.
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710069, China.
authors.forename: Lichuan
authors.initials: L
authors.lastname: Niu
authors.forename: Zhenghua
authors.initials: Z
authors.lastname: Song
authors.forename: Xili
authors.initials: X
authors.lastname: He
mesh_terms: D000284:Administration, Oral; D000900:Anti-Bacterial Agents / Q000008:administration & dosage / Q000097:blood* / Q000652:urine*; D002214:Capsules; D002515:Cephradine / Q000008:administration & dosage / Q000097:blood* / Q000652:urine*; D017022:Flow Injection Analysis; D006801:Humans; D007700:Kinetics; D049408:Luminescent Agents / Q000737:chemistry*; D008165:Luminol / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D015203:Reproducibility of Results; D012972:Sodium Hydroxide / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000900:Anti-Bacterial Agents; D002214:Capsules; D049408:Luminescent Agents; D012972:Sodium Hydroxide; D008165:Luminol; D002515:Cephradine; D010100:Oxygen