title: Flow injection determination of p-aminophenol at trace level using inhibited luminol-dimethylsulfoxide-NaOH-EDTA chemiluminescence.
abstract: A novel flow injection procedure was developed for the determination of p-aminophenol (PAP) based on the inhibition by PAP of the chemiluminescence from luminol-dimethylsulfoxide (DMSO)-NaOH-EDTA system. The method has merits of higher sensitivity, wider linear range, simpler procedure, and a more rapid analyzing speed. It is applicable for the determination of PAP in the range of 2.5 x 10(-10)-5.0 x 10(-8) g mL(-1) with a detection limit of 1.9 x 10(-10) g mL(-1). The relative standard deviation (RSD) for 5.0 x 10(-9) g mL(-1) PAP is 0.78% (n=15). The method has been successfully used to determine PAP in industrial wastewaters and environmental waters. Additionally, the inhibition mechanism was also discussed briefly.
authors.affiliation: Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Hong
authors.initials: H
authors.lastname: Xu
authors.forename: Chun-Feng
authors.initials: CF
authors.lastname: Duan
authors.forename: Zhi-Feng
authors.initials: ZF
authors.lastname: Zhang
authors.forename: Jia-Yi
authors.initials: JY
authors.lastname: Chen
authors.forename: Chun-Ze
authors.initials: CZ
authors.lastname: Lai
authors.forename: Mei
authors.initials: M
authors.lastname: Lian
authors.forename: Li-Juan
authors.initials: LJ
authors.lastname: Liu
authors.forename: Hua
authors.initials: H
authors.lastname: Cui
mesh_terms: D000627:Aminophenols / Q000032:analysis*; D004121:Dimethyl Sulfoxide / Q000737:chemistry*; D004492:Edetic Acid / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods; D017022:Flow Injection Analysis / Q000379:methods*; D007220:Industrial Waste / Q000032:analysis; D008163:Luminescent Measurements / Q000379:methods*; D008165:Luminol / Q000737:chemistry*; D012680:Sensitivity and Specificity; D012972:Sodium Hydroxide / Q000737:chemistry*
chemical_list: D000627:Aminophenols; D007220:Industrial Waste; D012972:Sodium Hydroxide; D008165:Luminol; D004492:Edetic Acid; D004121:Dimethyl Sulfoxide