Xue-qin Xu

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Biosorption potential of Penicillium simplicissimum (Penicillium sp.) immobilized within loofa sponge (PSILS) for lead and copper from aqueous media was explored. The effects of pH, contact time and initial concentration were studied in batch experiments. The maximum uptake of metal ions was obtained at pH 5.0. Biosorption equilibrium was established by 60(More)
A selective and sensitive method of microemulsion EKC (MEEKC) with electrochemical detection (ED) was developed for separation and determination of 14 flavonoids. In order to obtain the better stability for the studied flavonoids, oil (ethyl acetate) with low interfacial surface tension was employed as organic solvent. A running buffer composed of 0.9%(More)
  • Xue-qin Xu
  • Guang pu xue yu guang pu fen xi = Guang pu
  • 2013
A simple and rapid method for determination of CaO, MgO, Fe2O3, Al2O3 and TiO2 in cement samples by inductive coupled plasma-atomic emission spectrometry (ICP-AES) was developed. In order to carry out the analysis, the cement samples were dissolved with mixed aqua regia, hydrofluoric acid, perchloric acid, hydrochloric acid, and the standard solution was(More)
New methods based on MEEKC coupling with field-amplified sample injection (FASI) induced by ACN were proposed for five isoquinoline alkaloids (berberine, palmatine, jatrorrhizine, sinomenine and homoharringtonine) in no salt and high salt sample solution (HS). For the separation of five isoquinoline alkaloids, a running buffer composed of 18 mM sodium(More)
The effect of S-TE (solubilization by thermophilic enzyme) pretreatment on excess sludge solubilization and changes of chemical components under microaeration and different temperatures was investigated. The results showed that, two reaction mechanisms of enzyme-catalyzed reaction and thermal-hydrolyzed reaction were involved in the S-TE process, which(More)
Chrysoidin is a kind of banned food dye, and it has been illegally used for coloring food. A rapid detection and quantification method is developed and applied in analysis chrysoidin in yuba. Gold nanoparticles are synthesized by using hexadecyl trimethyl ammonium bromide (CTAB) as the bifunctional ligand to link the solid substrate and the AuNPs. The laser(More)
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