The Experts below are selected from a list of 222 Experts worldwide ranked by ideXlab platform

Yan Wang - One of the best experts on this subject based on the ideXlab platform.

Ai Jia - One of the best experts on this subject based on the ideXlab platform.

  • Trace analysis of quinolone and fluoroquinolone antibiotics from wastewaters by liquid chromatography-electrospray tandem mass spectrometry.
    Journal of Chromatography A, 2008
    Co-Authors: Yang Xiao, Hong Chang, Ai Jia
    Abstract:

    Abstract A sensitive liquid chromatography–electrospray tandem mass spectrometry method, combined with solid-phase extraction and a weak cation exchange cartridge cleanup, was established for twenty quinolone and fluoroquinolone antibiotics (Pipemidic Acid, flerofloxacin, ofloxacin, pefloxacin, enoxacin, norfloxacin, ciprofloxacin, danofloxacin, enrofloxacin, lomefloxacin, difloxacin, sarafloxacin, gatifloxacin, sparfloxacin, moxifloxacin, cinoxacin, oxolinic Acid, nalidixic Acid, flumequine, and piromidic Acid) in influent, effluent, and river waters. For the various water matrices considered, the overall recoveries were from 64% to 127% except for piromidic Acid (27–33%), and no obvious matrix effect was observed. The method detection limits for the twenty target antibiotics in the influent, effluent, and surface water samples were 1.6–50 ng/L, 0.6–50 ng/L, and 0.8–50 ng/L, respectively. This method was applied to analyze residual quinolone and fluoroquinolone antibiotics in wastewater and surface water samples from Beijing, China. Eight antibiotics (12 (Pipemidic Acid)–1208 ng/L (ofloxacin)) were detected in wastewater, and seven (1.3 (lomefloxacin)–535 ng/L (ofloxacin)) were detected in surface water samples. Gatifloxacin, a 4th generation fluoroquinolone antibiotic, was detected for the first time in influent (111 ng/L), effluent (56 ng/L), and river water (16–42 ng/L).

  • Trace analysis of quinolone and fluoroquinolone antibiotics from wastewaters by liquid chromatography-electrospray tandem mass spectrometry
    journal of chromatography a, 2008
    Co-Authors: Xiao Yang, Ai Jia, Chang Hong, Hu Jianying
    Abstract:

    A sensitive liquid chromatography-electrospray tandem mass spectrometry method, combined with solid-phase extraction and a weak cation exchange cartridge cleanup, was established for twenty quinolone and fluoroquinolone antibiotics (Pipemidic Acid, flerofloxacin, ofloxacin, pefloxacin, enoxacin, norfloxacin, ciprofloxacin, danofloxacin, enrofloxacin, lomefloxacin, difloxacin, sarafloxacin, gatifloxacin, sparfloxacin, moxifloxacin, cinoxacin, oxolinic Acid, nalidixic Acid, flumequine, and piromidic Acid) in influent, effluent, and river waters. For the various water matrices considered, the overall recoveries were from 64% to 127% except for piromidic Acid (27-33%), and no obvious matrix effect was observed. The method detection limits for the twenty target antibiotics in the influent, effluent, and surface water samples were 1.6-50 ng/L, 0.6-50 ng/L, and 0.8-50 ng/L, respectively. This method was applied to analyze residual quinolone and fluoroquinolone antibiotics in wastewater and surface water samples from Beijing, China. Eight antibiotics (12 (Pipemidic Acid)-1208 ng/L (ofloxacin)) were detected in wastewater, and seven (1.3 (lomefloxacin)-535 ng/L (ofloxacin)) were detected in surface water samples. Gatifloxacin, a 4th generation fluoroquinolone antibiotic, was detected for the first time in influent (111 ng/L), effluent (56 ng/L), and river water (16-42 ng/L). 2008 Elsevier B.V. All rights reserved.Biochemical Research MethodsChemistry, AnalyticalSCI(E)EIPubMed76ARTICLE1-2100-108121

Congliang Zhang - One of the best experts on this subject based on the ideXlab platform.

Hu Jianying - One of the best experts on this subject based on the ideXlab platform.

  • Trace analysis of quinolone and fluoroquinolone antibiotics from wastewaters by liquid chromatography-electrospray tandem mass spectrometry
    journal of chromatography a, 2008
    Co-Authors: Xiao Yang, Ai Jia, Chang Hong, Hu Jianying
    Abstract:

    A sensitive liquid chromatography-electrospray tandem mass spectrometry method, combined with solid-phase extraction and a weak cation exchange cartridge cleanup, was established for twenty quinolone and fluoroquinolone antibiotics (Pipemidic Acid, flerofloxacin, ofloxacin, pefloxacin, enoxacin, norfloxacin, ciprofloxacin, danofloxacin, enrofloxacin, lomefloxacin, difloxacin, sarafloxacin, gatifloxacin, sparfloxacin, moxifloxacin, cinoxacin, oxolinic Acid, nalidixic Acid, flumequine, and piromidic Acid) in influent, effluent, and river waters. For the various water matrices considered, the overall recoveries were from 64% to 127% except for piromidic Acid (27-33%), and no obvious matrix effect was observed. The method detection limits for the twenty target antibiotics in the influent, effluent, and surface water samples were 1.6-50 ng/L, 0.6-50 ng/L, and 0.8-50 ng/L, respectively. This method was applied to analyze residual quinolone and fluoroquinolone antibiotics in wastewater and surface water samples from Beijing, China. Eight antibiotics (12 (Pipemidic Acid)-1208 ng/L (ofloxacin)) were detected in wastewater, and seven (1.3 (lomefloxacin)-535 ng/L (ofloxacin)) were detected in surface water samples. Gatifloxacin, a 4th generation fluoroquinolone antibiotic, was detected for the first time in influent (111 ng/L), effluent (56 ng/L), and river water (16-42 ng/L). 2008 Elsevier B.V. All rights reserved.Biochemical Research MethodsChemistry, AnalyticalSCI(E)EIPubMed76ARTICLE1-2100-108121

Yang Xiao - One of the best experts on this subject based on the ideXlab platform.

  • occurrence and fate of quinolone and fluoroquinolone antibiotics in a municipal sewage treatment plant
    Water Research, 2012
    Co-Authors: Yang Xiao, Jianying Hu
    Abstract:

    This study developed a method for analysis of nineteen quinolone and fluoroquinolone antibiotics (FQs) in sludge samples, and investigated the occurrence and fate of the FQs in a municipal sewage treatment plant (STP) with anaerobic, anoxic, and aerobic treatment processes. Eleven compounds, including Pipemidic Acid, fleroxacin, ofloxacin, norfloxacin, ciprofloxacin, enrofloxacin, lomefloxacin, sparfloxacin, gatifloxacin, moxifloxacin, and sarafloxacin (only in sludge), were detected in the STP. The predominance of ofloxacin and norfloxacin, followed by lomefloxacin, ciprofloxacin, gatifloxacin, and moxifloxacin, were found in wastewater, suspended solids, and sludge. The total concentrations of FQs were 2573 ± 241 ng/L, 1013 ± 218 ng/L, and 18.4 ± 0.9 mg/kg in raw sewage, secondary effluent, and sludge, respectively. Extremely low mass change percentages were observed for FQs in anaerobic, anoxic, and aerobic treatment units, suggesting biodegradation to be of minor importance in the removal of FQs in STPs. 50–87% of the initial FQs loadings (except for Pipemidic Acid (36%)) were ultimately found in the dewatered sludge. Mean removal efficiencies of FQs in the STP were 56–75%, except for new generation drugs such as moxifloxacin (40 ± 5%) and gatifloxacin (43 ± 13%). A significant positive correlation was found between removal efficiencies and Kd of FQs. The major factor in the removal of FQs in the STP was sorption to sludge, which was not governed by hydrophobic interactions. The long-term cycling and persistence of FQs in the STP has made activated sludge as a huge reservoir of FQ antibiotics.

  • Trace analysis of quinolone and fluoroquinolone antibiotics from wastewaters by liquid chromatography-electrospray tandem mass spectrometry.
    Journal of Chromatography A, 2008
    Co-Authors: Yang Xiao, Hong Chang, Ai Jia
    Abstract:

    Abstract A sensitive liquid chromatography–electrospray tandem mass spectrometry method, combined with solid-phase extraction and a weak cation exchange cartridge cleanup, was established for twenty quinolone and fluoroquinolone antibiotics (Pipemidic Acid, flerofloxacin, ofloxacin, pefloxacin, enoxacin, norfloxacin, ciprofloxacin, danofloxacin, enrofloxacin, lomefloxacin, difloxacin, sarafloxacin, gatifloxacin, sparfloxacin, moxifloxacin, cinoxacin, oxolinic Acid, nalidixic Acid, flumequine, and piromidic Acid) in influent, effluent, and river waters. For the various water matrices considered, the overall recoveries were from 64% to 127% except for piromidic Acid (27–33%), and no obvious matrix effect was observed. The method detection limits for the twenty target antibiotics in the influent, effluent, and surface water samples were 1.6–50 ng/L, 0.6–50 ng/L, and 0.8–50 ng/L, respectively. This method was applied to analyze residual quinolone and fluoroquinolone antibiotics in wastewater and surface water samples from Beijing, China. Eight antibiotics (12 (Pipemidic Acid)–1208 ng/L (ofloxacin)) were detected in wastewater, and seven (1.3 (lomefloxacin)–535 ng/L (ofloxacin)) were detected in surface water samples. Gatifloxacin, a 4th generation fluoroquinolone antibiotic, was detected for the first time in influent (111 ng/L), effluent (56 ng/L), and river water (16–42 ng/L).