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Fabregat-Palau J, Rigol A, Grathwohl P, Vidal M. Assessing sorption of fluoroquinolone antibiotics in soils from a K d compilation based on pure organic and mineral components. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116535. [PMID: 38865936 DOI: 10.1016/j.ecoenv.2024.116535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/14/2024]
Abstract
The presence of fluoroquinolone (FQ) antibiotics in soils may cause a threat to human health due to overexposure and the generation of antibiotic resistance genes. Understanding their sorption behavior in soils is important to predict subsequent FQ (bio) availability. Here, FQ sorption in pure soil organic (i.e., humic substances) and mineral (i.e., metal oxides; phyllosilicates) components is evaluated through a solid-liquid distribution coefficient (Kd (FQ)) dataset consisting of 243 entries originated from 80 different studies, to elucidate their respective contribution to the overall Kd (FQ) in bulk soils. First, different factors affecting FQ sorption and desorption in each of these soil phases are critically discussed. The strong role of pH in Kd (FQ), due to the simultaneous effect on both FQ speciation and surface charge changes, encouraged the derivation of normalized sorption coefficients for the cationic, zwitterionic and anionic FQ species in humic substances and in different phyllosilicates. Kd (FQ) in metal oxides revealed a key role of metal nature and material specific surface area due to complexation sorption mechanisms at neutral pH. Cumulative distribution functions (CDF) were applied to each dataset to establish a sorption affinity range for each phase and to derive best estimate Kd (FQ) values for those materials where normalized sorption coefficients to FQ species were unavailable. The data analysis conducted in the different soil phases set the basis for a Kd (FQ) prediction model, which combined the respective sorption affinity of each phase for FQ and phase abundance in soil to estimate Kd (FQ) in bulk soils. The model was subsequently validated with sorption data in well characterized soils compiled from the literature.
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Affiliation(s)
- Joel Fabregat-Palau
- Department of Geosciences, University of Tübingen, Schnarrenbergstraße 94-96, Tübingen 72076, Germany; Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona 08028, Spain.
| | - Anna Rigol
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona 08028, Spain; Institut de Recerca de l'Aigua (IdRA), Universitat de Barcelona, Martí i Franquès 1-11, Barcelona 08028, Spain
| | - Peter Grathwohl
- Department of Geosciences, University of Tübingen, Schnarrenbergstraße 94-96, Tübingen 72076, Germany
| | - Miquel Vidal
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona 08028, Spain
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2
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Hu W, Chen S, Hao H, Jiang H. Enhanced Photoreactivity of
MOFs
by Intercalating Interlayer Bands via Simultaneous −N=C=O and −
SCu
Modification. AIChE J 2022. [DOI: 10.1002/aic.17879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wei‐Fei Hu
- Department of Applied Chemistry University of Science and Technology of China Hefei China
| | - Shuo Chen
- Department of Applied Chemistry University of Science and Technology of China Hefei China
| | - Hong‐Chao Hao
- Department of Applied Chemistry University of Science and Technology of China Hefei China
| | - Hong Jiang
- Department of Applied Chemistry University of Science and Technology of China Hefei China
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3
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Ohoro CR, Adeniji AO, Okoh AI, Okoh OO. Spatial and seasonal variations of endocrine disrupting compounds in water and sediment samples of Markman Canal and Swartkops River Estuary, South Africa and their ecological risk assessment. MARINE POLLUTION BULLETIN 2021; 173:113012. [PMID: 34607130 DOI: 10.1016/j.marpolbul.2021.113012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 09/24/2021] [Accepted: 09/26/2021] [Indexed: 05/12/2023]
Abstract
The presence of pharmaceuticals in surface water and sediment has sparked up a global concern, as they could cause harm to human health. In this study, we investigated five pharmaceuticals (caffeine, carbamazepine, sulfamethoxazole, testosterone, and trimethoprim) in surface water and sediment samples from Swartkops River Estuary and Markman Stormwater Canal, in the Eastern Cape Province, South Africa. Ultra-Performance Liquid Chromatography (UPLC) systems coupled with a hyphenated quadrupole-time-of-flight mass spectrometry (QTOF-MS) was used for the analysis. Of the five pharmaceuticals investigated, three were detected in sediment samples at concentrations ranging from BDL - 23.86 μg/kg (dw). Caffeine and sulfamethoxazole were below the detection limit. The finding of this current study suggests that Markman and Motherwell's stormwater canals were potential contributors to pollution in Swartkops River Estuary. Ecotoxicity risk assessment indicated that trimethoprim and carbamazepine could constitute potential risk to aquatic organisms in Markman Canal and Swartkops Estuary, suggesting the need for proper control measure to prevent the pollution from toxicants in aquatic resources.
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Affiliation(s)
- Chinemerem Ruth Ohoro
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice 5700, South Africa; Department of Pure and Applied Chemistry, University of Fort Hare, Alice 5700, South Africa.
| | - Abiodun Olagoke Adeniji
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice 5700, South Africa; Department of Pure and Applied Chemistry, University of Fort Hare, Alice 5700, South Africa; Department of Chemistry and Chemical Technology, National University of Lesotho, P. O. Roma, 180, Lesotho
| | - Anthony Ifeanyi Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice 5700, South Africa; Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice 5700, South Africa; Department of Environmental Health Sciences, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Omobola Oluranti Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice 5700, South Africa; Department of Pure and Applied Chemistry, University of Fort Hare, Alice 5700, South Africa
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4
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Demeiry ME, Ali A, Abouleila Y, Shimizu Y, Masujima T, Salam RA, Hadad G, Emara S. Quantification and targeted detection of ciprofloxacin in dosage form and human urine by direct injection nano-electrospray ionization multi-stage mass spectrometry. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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5
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Liu Y, Liu X, Zhang G, Ma T, Du T, Yang Y, Lu S, Wang W. Adsorptive removal of sulfamethazine and sulfamethoxazole from aqueous solution by hexadecyl trimethyl ammonium bromide modified activated carbon. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.12.041] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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6
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Improved resolution of fluoroquinolones using cetyltrimethyl ammonium bromide–micellar electrokinetic chromatography and its application to residue analysis in surface water. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1092:306-312. [DOI: 10.1016/j.jchromb.2018.06.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/04/2018] [Accepted: 06/14/2018] [Indexed: 11/21/2022]
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7
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Riaz L, Mahmood T, Khalid A, Rashid A, Ahmed Siddique MB, Kamal A, Coyne MS. Fluoroquinolones (FQs) in the environment: A review on their abundance, sorption and toxicity in soil. CHEMOSPHERE 2018; 191:704-720. [PMID: 29078193 DOI: 10.1016/j.chemosphere.2017.10.092] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 10/10/2017] [Accepted: 10/15/2017] [Indexed: 06/07/2023]
Abstract
The use of fluoroquinolones (FQs) antibiotics as therapeutic agents and growth promoters is increasing worldwide; however their extensive uses are also resulting in antibiotic resistance among world communities. FQs have also become one of the major contaminants in the waste water bodies, which are not even completely removed during the treatment processes. Furthermore, their abundance in agricultural resources, such as the irrigation water, the bio-solids and the livestock manure can also affect the soil micro-environment. These antibiotics in soil tend to interact in several different ways to affect soil flora and fauna. The current review endeavors to highlight the some critical aspects of FQs prevalence in the environment. The review presents a detailed discussion on the pathways and abundance of FQs in soil. The discussion further spans the issue of sorption and FQs transformation into the soil better understand of their behavior and their toxicity to soil flora and fauna.
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Affiliation(s)
- Luqman Riaz
- Department of Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan.
| | - Tariq Mahmood
- Department of Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Azeem Khalid
- Department of Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Audil Rashid
- Department of Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
| | | | - Atif Kamal
- Department of Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Mark S Coyne
- Department of Plant & Soil Sciences University of Kentucky, Lexington KY 40546-0091, USA
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8
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Li S, Hu J. Photolytic and photocatalytic degradation of tetracycline: Effect of humic acid on degradation kinetics and mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2016; 318:134-144. [PMID: 27420385 DOI: 10.1016/j.jhazmat.2016.05.100] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 05/14/2016] [Accepted: 05/30/2016] [Indexed: 06/06/2023]
Abstract
The widespread occurrence of tetracycline (TC) in the aquatic environment poses a potential risk to aquatic ecosystem and human health. In this study, elimination of TC by photolysis and TiO2 photocatalysis were investigated by using mercury-free UVA-LED as an alternative light source. Particular emphasis was given to the effect of humic acid (HA) on the reaction kinetics and mechanisms of TC removal. Photolytic degradation of TC was slightly enhanced by HA due to its photosensitization effect, as evidenced by the increased steady-state concentrations of OH. The most abundant transformation product of TC, which was formed by the attack of OH radical, was enhanced during photolytic degradation. During photocatalytic experiments, HA dramatically inhibited TC loss due to the surface deactivation of TiO2 and OH quenching. The steady-state concentration of OH was dramatically decreased in the presence of HA. Identification of transformation products showed that HA could inhibit the oxidation pathways initiated by OH during photocatalysis of TC. These findings provide further insights into the assessment of photolysis and photocatalysis for antibiotics elimination in natural waters where HA exists ubiquitously.
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Affiliation(s)
- Si Li
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore
| | - Jiangyong Hu
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore.
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9
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Chierentin L, Salgado HRN. Review of Properties and Analytical Methods for the Determination of Norfloxacin. Crit Rev Anal Chem 2016; 46:22-39. [PMID: 26398574 DOI: 10.1080/10408347.2014.941456] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The first-generation quinolones have their greatest potency against Gram-negative bacteria, but newly developed molecules have exhibited increased potency against Gram-positive bacteria, and existing agents are available with additional activity against anaerobic microorganisms. Norfloxacin is a broad-spectrum antimicrobial fluoroquinolone used against Gram-positive and Gram-negative organisms (aerobic organisms). There are different analytical methods available to determine norfloxacin applied in quality control of this medicine in order to ensure its effectiveness and safety. The authors present an overview of the fourth generation of quinolones, followed by the properties, applications, and analytical methods of norfloxacin. These results show several existing analytical techniques that are flexible and broad-based methods of analysis in different matrices. This article focuses on bionalytical and pharmaceutical quality-control applications, such as thin-layer chromatography, microbiological assay, spectrophotometry, capillary electrophoresis (CE), and high-performance liquid chromatography (HPLC).
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Affiliation(s)
- Lucas Chierentin
- a School of Pharmaceutical Sciences, São Paulo State University , Araraquara , São Paulo , Brazil
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10
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Slana M, Sollner-Dolenc M. Enrofloxacin degradation in broiler chicken manure under various laboratory conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:4422-4429. [PMID: 26507726 DOI: 10.1007/s11356-015-5624-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 10/15/2015] [Indexed: 06/05/2023]
Abstract
The rate of degradation of enrofloxacin in broiler chicken manure has been characterized in the laboratory according to the CVMP guideline on determining the fate of veterinary medicinal products in manure. Degradation was followed in a flow-through system under aerobic and anaerobic conditions, in the dark and in the presence of light. The rate of degradation of enrofloxacin and the formation of its degradation products are dependent on laboratory conditions. A rapid degradation of enrofloxacin in the dark was noticed, where a shorter degradation half-life under aerobic (DT50 = 59.1 days), comparing to anaerobic conditions (DT50 = 88.9 days), was determined. The presence of light slowed down the enrofloxacin degradation half-life, which was significantly shorter under aerobic (DT50 = 115.0 days), comparing to anaerobic conditions (DT50 = 190.8 days). Desethylene-enrofoxacin was the only degradation product formed, its concentrations ranged from 2.5 to 14.9 %. The concentration of the degradation product was approximately 2.5-fold higher under aerobic conditions. Enrofloxacin degradation in sterile manure incubated under sterile conditions was marginal comparing to non-sterile conditions; after 120 days of incubation, approximately 80 % of enrofloxacin was still present in manure and only 1 % of desethylene-enrofloxacin was formed. The present work demonstrates that enrofloxacin degradation in chicken manure is relatively fast when incubated in the dark under aerobic conditions which is the recommended incubation system for chicken manure according to CVMP guideline.
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Affiliation(s)
- Marko Slana
- Krka, d. d., Novo mesto, Šmarješka cesta 6, 8501, Novo mesto, Slovenia
| | - Marija Sollner-Dolenc
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000, Ljubljana, Slovenia.
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11
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Abstract
Over the last two decades the development of capillary electrophoresis instruments lead to systems with programmable sampler, separation column, separation buffer, and detection devices comparable visually in many aspects to the setup of classical chromatography.Two processes make capillary electrophoresis essentially different from chromatography and are the basis of the CE-way of thinking, namely, the injection type and the liquid flow within the capillary. (1) When the injection is made hydrodynamically (such as in most of the found applications in the literature), the injected volumes are directly dependent on the type and size of the separation capillary. (2) The buffer velocity is not pressure driven as in liquid chromatography but electrokinetically governed by the quality of the capillary surface (separation buffer dependant surface charge) inducing an electroosmotic flow (EOF). The EOF undergoes small variations and is not necessarily identical from one separation or day to the other. The direct consequence is an apparent nonreproducible migration time of the analytes, even though the own velocity of the ions is the same.The effective mobility (field strength normalized velocity) of the ions is a possible parameterization from acquired timescale to effective mobility-scale electropherograms leading to a reproducible visualization and better quantification with a direct relation to structural characters of the analytes (i.e., charge and size-see chapter on semiempirical modelization).
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Affiliation(s)
- Philippe Schmitt-Kopplin
- Research Unit Analytical BioGeoChemistry, Helmholtz Center Munich-Germany Research Center for Environmental Health GmbH, Neuherberg, Germany.
| | - Agnes Fekete
- Lehrstuhl fuer Pharmazeutische Biologie, Julius-Maximilians-Universitaet Wuerzburg, Wuerzburg, 97082, Germany
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12
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Bol’shakov DS, Amelin VG, Nikeshina TB. Identification and determination of antibacterial substances in drugs by capillary electrophoresis. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934815110039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Nazar MF, Mukhtar F, Ashfaq M, Rahman HMAU, Zafar MN, Sumrra SH. Physicochemical investigation of antibacterial Moxifloxacin interacting with quaternary ammonium disinfectants. FLUID PHASE EQUILIBRIA 2015; 406:47-54. [DOI: 10.1016/j.fluid.2015.07.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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14
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Sturini M, Speltini A, Maraschi F, Pretali L, Ferri EN, Profumo A. Sunlight-induced degradation of fluoroquinolones in wastewater effluent: Photoproducts identification and toxicity. CHEMOSPHERE 2015; 134:313-318. [PMID: 25966937 DOI: 10.1016/j.chemosphere.2015.04.081] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 04/20/2015] [Accepted: 04/26/2015] [Indexed: 06/04/2023]
Abstract
The photodegradation of Ciprofloxacin (CIP), Enrofloxacin (ENR), Danofloxacin (DAN), Marbofloxacin (MAR) and Levofloxacin (LEV), five widely used fluoroquinolones (FQs), was studied in urban WWTP secondary effluent, under solar light. The degradation profiles and the kinetic constants were determined at the micrograms per litre levels (20-50 μg L(-1)). The photo-generated products were identified by high-pressure liquid chromatography coupled to electrospray ionization tandem mass spectrometry (HPLC-ESI-MS/MS). The toxicity of the photoproducts was assessed by Vibrio fischeri light emission inhibition assay performed on irradiated and not-irradiated FQs solutions, at environmentally significant concentrations. Attention was focused on the evaluation of the photoproducts contribution to the overall biotoxic effect of these emerging pollutants. Data from chronic exposure experiments (24-48 h) were primarily considered. Results confirmed the major usefulness of chronic toxicity data with respect to the acute assay ones and proved the not negligible biotoxicity of the FQs photodegradation products.
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Affiliation(s)
- Michela Sturini
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy.
| | - Andrea Speltini
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Federica Maraschi
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Luca Pretali
- Parco Tecnologico Padano, via Einstein Albert, 26900 Lodi, Italy
| | - Elida Nora Ferri
- Department of Pharmacy and Biotechnology, University of Bologna, via S. Donato 15, 40127 Bologna, Italy
| | - Antonella Profumo
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
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15
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He K, Blaney L. Systematic optimization of an SPE with HPLC-FLD method for fluoroquinolone detection in wastewater. JOURNAL OF HAZARDOUS MATERIALS 2015; 282:96-105. [PMID: 25200119 DOI: 10.1016/j.jhazmat.2014.08.027] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 07/10/2014] [Accepted: 08/19/2014] [Indexed: 06/03/2023]
Abstract
This paper describes a selective and ultra-sensitive analytical method for simultaneous determination of 11 fluoroquinolone (FQ) antibiotics in environmental and wastewater samples. The method employs offline solid-phase extraction (SPE) and reversed-phase high performance liquid chromatography with fluorescence detection (HPLC-FLD). A weak cation exchange SPE protocol was developed with a novel loading volume optimization algorithm and a methanol cleanup step to remove background organic matter. Various parameters were optimized to recover FQs from water/wastewater and analyte recovery was generally greater than 80%. Chromatographic separation of the 11 FQs was achieved on a 150 mm pentafluorophenyl column using a gradient elution scheme with methanol, acetonitrile, and 20mM phosphate buffer (pH=2.4). Excitation and emission wavelengths were individually optimized for each FQ using fluorescence spectroscopy; the excitation and emission wavelengths were 276-296 nm and 444-506 nm, respectively. Instrumental quantitation limits were 20-100 pg of mass injected. Of the 11 FQs investigated, seven (i.e., ciprofloxacin, difloxacin, enrofloxacin, fleroxacin, norfloxacin, moxifloxacin, and ofloxacin) were detected during a four-month sampling campaign of wastewater and wastewater-impacted surface water. Concentrations of FQs in raw wastewater, wastewater effluent, and wastewater-impacted surface water were 5-1292, 2-504, and 4-187ng/L, respectively.
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Affiliation(s)
- Ke He
- University of Maryland Baltimore County, Department of Chemical, Biochemical and Environmental Engineering, 1000 Hilltop Circle, Engineering 314, Baltimore, MD 21250, United States
| | - Lee Blaney
- University of Maryland Baltimore County, Department of Chemical, Biochemical and Environmental Engineering, 1000 Hilltop Circle, Engineering 314, Baltimore, MD 21250, United States.
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16
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Van Doorslaer X, Haylamicheal ID, Dewulf J, Van Langenhove H, Janssen CR, Demeestere K. Heterogeneous photocatalysis of moxifloxacin in water: chemical transformation and ecotoxicity. CHEMOSPHERE 2015; 119 Suppl:S75-S80. [PMID: 24735961 DOI: 10.1016/j.chemosphere.2014.03.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 03/07/2014] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
This work provides new insights on the impact of TiO2/UV catalyzed chemical transformation of moxifloxacin on ecotoxicity effects towards the green alga Pseudokirchneriella subcapitata. The moxifloxacin median effect concentration (EC-50=0.78 [0.56, 1.09] mg L(-1)), determined in accordance to the OECD 72-h growth inhibition test guideline, was 7 times lower than that of the older and widely used fluoroquinolone ciprofloxacin (EC-50=5.57 [4.86, 6.38] mg L(-1)). Applying heterogeneous photocatalysis as an advanced oxidation technique to degrade moxifloxacin in aqueous solution decreased the average growth inhibition from 72% to 14% after 150 min of treatment. No significant carbon mineralization was observed and liquid chromatography mass spectrometry analysis revealed the formation of 13 degradation products for which a chemical structure could be proposed based on accurate mass determination. Combined chemical and ecotoxicological analysis showed that as long as moxifloxacin is present in the reaction solution, it is the main compound affecting algal growth inhibition. However, also the contribution of the degradation products to the observed ecotoxicity cannot be neglected. Photocatalytically induced modifications of moxifloxacin mainly occur at the diazobicyclo-substituent as ring opening, oxidation into carbonyl groups, and hydroxylation. This results into the formation of more hydrophilic compounds with a decreased biological activity compared with moxifloxacin. The change in lipophilicity, and possibly a modified acid-base speciation, most probably also affect the cell membrane permeation of the degradation products, which might be another factor explaining the observed lower residual ecotoxicity of the photocatalytically treated reaction solutions.
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Affiliation(s)
- Xander Van Doorslaer
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Israel Deneke Haylamicheal
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium; Department of Applied Ecology and Environmental Biology, Faculty of Bioscience Engineering, Ghent University, Jozef Plateaustraat 22, B-9000 Ghent, Belgium
| | - Jo Dewulf
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Herman Van Langenhove
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Colin R Janssen
- Department of Applied Ecology and Environmental Biology, Faculty of Bioscience Engineering, Ghent University, Jozef Plateaustraat 22, B-9000 Ghent, Belgium
| | - Kristof Demeestere
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
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17
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Nazar MF, Mukhtar F, Chaudry S, Ashfaq M, Mehmood S, Asif A, Rana UA. Biophysical probing of antibacterial Gemifloxacin assimilated in surfactant mediated molecular assemblies. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.11.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Van Doorslaer X, Dewulf J, Van Langenhove H, Demeestere K. Fluoroquinolone antibiotics: an emerging class of environmental micropollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 500-501:250-69. [PMID: 25226071 DOI: 10.1016/j.scitotenv.2014.08.075] [Citation(s) in RCA: 377] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 08/21/2014] [Accepted: 08/21/2014] [Indexed: 05/21/2023]
Abstract
The aim of this review paper is to provide a comprehensive overview of different chemical and environmental aspects concerning fluoroquinolone antibiotics as emerging contaminants. A literature survey has been performed based on 204 papers from 1998 to mid-2013, resulting in a dataset consisting out of 4100 data points related to physical-chemical properties, environmental occurrence, removal efficiencies, and ecotoxicological data. In a first part, an overview is given on relevant physical-chemical parameters to better understand the behavior of fluoroquinolones during wastewater treatment and in the environment. Secondly, the route of these antibiotics after their application in both human and veterinary surroundings is discussed. Thirdly, the occurrence of fluoroquinolone residues is discussed for different environmental matrices. The final part of this review provides a tentative risk assessment of fluoroquinolone compounds and their transformation products in surface waters by means of hazard quotients. Overall, this review shows that fluoroquinolone antibiotics have a wide spread use and that their behavior during wastewater treatment is complex with an incomplete removal. As a result, it is observed that these biorecalcitrant compounds are present in different environmental matrices at potentially hazardous concentrations for the aquatic environment. The latter calls for actions on both the consumption as well as the wastewater treatment aspect to diminish the discharge of these biological active compounds.
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Affiliation(s)
- Xander Van Doorslaer
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Jo Dewulf
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Herman Van Langenhove
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Kristof Demeestere
- Research Group EnVOC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
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Polyamidoamine dendrimers as off-column binding agent and in-column pseudostationary phase for efficient and sensitive capillary electrophoretic analysis of fluoroquinolones in chicken muscles. Food Chem 2014; 157:498-503. [DOI: 10.1016/j.foodchem.2014.02.070] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 01/26/2014] [Accepted: 02/17/2014] [Indexed: 11/20/2022]
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Challis JK, Hanson ML, Friesen KJ, Wong CS. A critical assessment of the photodegradation of pharmaceuticals in aquatic environments: defining our current understanding and identifying knowledge gaps. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:672-96. [PMID: 24643336 DOI: 10.1039/c3em00615h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
This work presents a critical assessment of the state and quality of knowledge around the aquatic photochemistry of human- and veterinary-use pharmaceuticals from laboratory experiments and field observations. A standardized scoring rubric was used to assess relevant studies within four categories: experimental design, laboratory-based direct and indirect photolysis, and field/solar photolysis. Specific metrics for each category are defined to evaluate various aspects of experimental design (e.g., higher scores are given for more appropriate characterization of light source wavelength distribution). This weight of evidence-style approach allowed for identification of knowledge strengths and gaps covering three areas: first, the general extent of photochemical data for specific pharmaceuticals and classes; second, the overall quality of existing data (i.e., strong versus weak); and finally, trends in the photochemistry research around these specific compounds, e.g. the observation of specific and consistent oversights in experimental design. In general, those drugs that were most studied also had relatively good quality data. The four pharmaceuticals studied experimentally at least ten times in the literature had average total scores (lab and field combined) of ≥29, considered decent quality; carbamazepine (13 studies; average score of 31), diclofenac (12 studies; average score of 31), sulfamethoxazole (11 studies; average score of 34), and propranolol (11 studies; average score of 29). Major oversights and errors in data reporting and/or experimental design included: lack of measurement and reporting of incident light source intensity, lack of appropriate controls, use of organic co-solvents in irradiation solutions, and failure to consider solution pH. Consequently, a number of these experimental parameters were likely a cause of inconsistent measurements of direct photolysis rate constants and quantum yields, two photochemical properties that were highly variable in the literature. Overall, the assessment rubric provides an objective and scientifically-defensible set of metrics for assessing the quality of a study. A major recommendation is the development of a method guideline, based on this rubric, for conducting and reporting on photochemical studies that would produce consistent and reliable data for quantitative comparison across studies. Furthermore, an emphasis should be placed on conducting more dual-fate studies involving controlled photolysis experiments in natural sunlight, and whole system fate studies in either natural or artificial systems. This would provide accurate data describing the actual contribution of photolysis to the overall fate of pharmaceuticals in the environment.
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Affiliation(s)
- Jonathan K Challis
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.
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21
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Maia AS, Ribeiro AR, Amorim CL, Barreiro JC, Cass QB, Castro PM, Tiritan ME. Degradation of fluoroquinolone antibiotics and identification of metabolites/transformation products by liquid chromatography–tandem mass spectrometry. J Chromatogr A 2014; 1333:87-98. [DOI: 10.1016/j.chroma.2014.01.069] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 10/22/2013] [Accepted: 01/24/2014] [Indexed: 11/25/2022]
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22
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Carvalho PN, Pirra A, Basto MCP, Almeida CMR. Activated sludge systems removal efficiency of veterinary pharmaceuticals from slaughterhouse wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:8790-8800. [PMID: 23740304 DOI: 10.1007/s11356-013-1867-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 05/23/2013] [Indexed: 06/02/2023]
Abstract
The knowledge on the efficiency of wastewater treatment plants (WWTPs) from animal food production industry for the removal of both hormones and antibiotics of veterinary application is still very limited. These compounds have already been reported in different environmental compartments at levels that could have potential impacts on the ecosystems. This work aimed to evaluate the role of activated sludge in the removal of commonly used veterinary drugs, enrofloxacin (ENR), tetracycline (TET), and ceftiofur, from wastewater during a conventional treatment process. For that, a series of laboratory-controlled experiments using activated sludge were carried out in batch reactors. Sludge reactors with 100 μg/L initial drug charge presented removal rates of 68 % for ENR and 77 % for TET from the aqueous phase. Results indicated that sorption to sludge and to the wastewater organic matter was responsible for a significant percentage of drugs removal. Nevertheless, these removal rates still result in considerable concentrations in the aqueous phase that will pass through the WWTP to the receiving environment. Measuring only the dissolved fraction of pharmaceuticals in the WWTP effluents may underestimate the loading and risks to the aquatic environment.
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Affiliation(s)
- Pedro N Carvalho
- CIMAR/CIIMAR and Faculdade de Ciências, Universidade do Porto, R. Campo Alegre s/n, 4169-007, Porto, Portugal,
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23
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Li Y, Niu J, Wang W. Reply to comment on "photolysis of enrofloxacin in aqueous systems under simulated sunlight irradiation: kinetics, mechanism and toxicity of photolysis products" [Li et al., Chemosphere 85 (2011) 892-897]. CHEMOSPHERE 2013; 92:1581-1584. [PMID: 23683870 DOI: 10.1016/j.chemosphere.2013.04.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 04/15/2013] [Indexed: 06/02/2023]
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24
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Saleh GA, Askal HF, Refaat IH, Abdel-aal FAM. REVIEW ON RECENT SEPARATION METHODS FOR DETERMINATION OF SOME FLUOROQUINOLONES. J LIQ CHROMATOGR R T 2013. [DOI: 10.1080/10826076.2012.691440] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Gamal A. Saleh
- a Department of Pharmaceutical Analytical Chemistry , Faculty of Pharmacy, Assiut University , Assiut , Egypt
| | - Hassan F. Askal
- a Department of Pharmaceutical Analytical Chemistry , Faculty of Pharmacy, Assiut University , Assiut , Egypt
| | - Ibrahim H. Refaat
- a Department of Pharmaceutical Analytical Chemistry , Faculty of Pharmacy, Assiut University , Assiut , Egypt
| | - Fatma A. M. Abdel-aal
- a Department of Pharmaceutical Analytical Chemistry , Faculty of Pharmacy, Assiut University , Assiut , Egypt
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25
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Razuc M, Garrido M, Caro YS, Teglia CM, Goicoechea HC, Fernández Band BS. Hybrid hard- and soft-modeling of spectrophotometric data for monitoring of ciprofloxacin and its main photodegradation products at different pH values. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 106:146-54. [PMID: 23376269 DOI: 10.1016/j.saa.2012.12.085] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Revised: 12/07/2012] [Accepted: 12/31/2012] [Indexed: 05/12/2023]
Abstract
A simple and fast on line spectrophotometric method combined with a hybrid hard-soft modeling multivariate curve resolution (HS-MCR) was proposed for the monitoring of photodegradation reaction of ciprofloxacin under UV radiation. The studied conditions attempt to emulate the effect of sunlight on these antibiotics that could be eventually present in the environment. The continuous flow system made it possible to study the ciprofloxacin degradation at different pH values almost at real time, avoiding errors that could arise from typical batch monitoring of the reaction. On the base of a concentration profiles obtained by previous pure soft-modeling approach, reaction pathways have been proposed for the parent compound and its photoproducts at different pH values. These kinetic models were used as a constraint in the HS-MCR analysis. The kinetic profiles and the corresponding pure response profile (UV-Vis spectra) of ciprofloxacin and its main degradation products were recovered after the application of HS-MCR analysis to the spectra recorded throughout the reaction. The observed behavior showed a good agreement with the photodegradation studies reported in the bibliography. Accordingly, the photodegradation reaction was studied by high performance liquid chromatography coupled with UV-Vis diode array detector (HPLC-DAD). The spectra recorded during the chromatographic analysis present a good correlation with the ones recovered by UV-Vis/HS-MCR method.
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Affiliation(s)
- Mariela Razuc
- FIA Laboratory, Department of Chemistry, Universidad Nacional del Sur, INQUISUR (UNS-CONICET), Av. Alem 1253, Bahía Blanca (B8000CPB), Buenos Aires, Argentina
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26
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Wammer KH, Korte AR, Lundeen RA, Sundberg JE, McNeill K, Arnold WA. Direct photochemistry of three fluoroquinolone antibacterials: norfloxacin, ofloxacin, and enrofloxacin. WATER RESEARCH 2013; 47:439-448. [PMID: 23141476 DOI: 10.1016/j.watres.2012.10.025] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 10/12/2012] [Accepted: 10/13/2012] [Indexed: 05/27/2023]
Abstract
Fluoroquinolone (FQ) antibacterial compounds are frequently detected in the aquatic environment, and photodegradation is expected to play an important role in FQ fate in some sunlit surface waters. This study investigated the direct aquatic photochemistry of three FQs: norfloxacin, ofloxacin, and enrofloxacin. The direct photolysis rate of each drug exhibited strong pH dependence when exposed to simulated sunlight. For each FQ, direct photolysis rates and total light absorbance were used to calculate quantum yields for each of three environmentally relevant protonation states: a cationic, a zwitterionic, and an anionic form. In each case, quantum yields of the species varied significantly. The quantum yield for the zwitterionic form was 2-3 times higher than that of the anionic form and over an order of magnitude higher than that of the cationic form. Antibacterial activity assays were used to determine whether the loss of parent FQ due to photolysis led to loss of activity. Norfloxacin and ofloxacin photoproducts were found to be inactive, whereas enrofloxacin photoproducts were found to retain significant activity. These results are important for aiding in predictions of the potential impacts of FQs in surface waters.
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Affiliation(s)
- Kristine H Wammer
- Department of Chemistry, University of St. Thomas, St. Paul, MN 55105, USA.
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Slana M, Dolenc MS. Environmental Risk Assessment of antimicrobials applied in veterinary medicine-A field study and laboratory approach. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2013; 35:131-141. [PMID: 23274419 DOI: 10.1016/j.etap.2012.11.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 11/28/2012] [Indexed: 06/01/2023]
Abstract
The fate and environmental risk of antimicrobial compounds of different groups of veterinary medicine pharmaceuticals (VMP's) have been compared. The aim was to demonstrate a correlation between the physical and chemical properties of active compounds and their metabolism in target animals, as well as their fate in the environment. In addition, the importance of techniques for manure management and agricultural practice and their influence on the fate of active compounds is discussed. The selected active compounds are shown to be susceptible to at least one environmental factor (sun, water, bacterial or fungal degradation) to which they are exposed during their life cycle, which contributes to its degradation. Degradation under a number of environmental factors has also to be considered as authentic information additional to that observed in the limited conditions in laboratory studies and in Environmental Risk Assessment calculations.
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Affiliation(s)
- Marko Slana
- Krka, d. d., Novo mesto, Šmarješka cesta 6, 8501 Novo mesto, Slovenia
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28
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Sturini M, Speltini A, Maraschi F, Pretali L, Profumo A, Fasani E, Albini A, Migliavacca R, Nucleo E. Photodegradation of fluoroquinolones in surface water and antimicrobial activity of the photoproducts. WATER RESEARCH 2012; 46:5575-5582. [PMID: 22901305 DOI: 10.1016/j.watres.2012.07.043] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 06/12/2012] [Accepted: 07/21/2012] [Indexed: 06/01/2023]
Abstract
The widespread presence of fluoroquinolone antibiotics (FQs) in natural ecosystems is a health hazard for humans and other living organisms. The role of sunlight in degrading FQs present in environmental waters has been studied. In particular, the photodegradation of four largely employed FQs, viz. Ciprofloxacin (CIP), Danofloxacin (DAN), Levofloxacin (LEV) and Moxifloxacin (MOX) has been studied in not tampered river water. Degradation rates have been investigated at ppb levels (20-50 μg L(-1)) under solar light, and the results have been commented critically. The products distribution has been studied by HPLC-ESI-MS/MS analysis and structures have been attributed on the basis of their mass fragmentation spectra. Importantly from the environmental point of view, the (potentially toxic) FQ nucleus remained intact over the early stages of the degradation. Indeed, the photoproducts were proved to possess residual antibacterial activity, as shown from in vitro antibacterial activity tests against different well characterized human and environmental bacterial strains, carried out on the above FQs, as well as for Enrofloxacin (ENR) and Marbofloxacin (MAR).
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Affiliation(s)
- Michela Sturini
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Andrea Speltini
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy.
| | - Federica Maraschi
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Luca Pretali
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Antonella Profumo
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy.
| | - Elisa Fasani
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Angelo Albini
- Department of Chemistry, University of Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - Roberta Migliavacca
- Department of Morphological, Eidological and Clinical Sciences, University of Pavia, Via Brambilla 74, 27100 Pavia, Italy
| | - Elisabetta Nucleo
- Department of Morphological, Eidological and Clinical Sciences, University of Pavia, Via Brambilla 74, 27100 Pavia, Italy
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Leung HW, Minh TB, Murphy MB, Lam JCW, So MK, Martin M, Lam PKS, Richardson BJ. Distribution, fate and risk assessment of antibiotics in sewage treatment plants in Hong Kong, South China. ENVIRONMENT INTERNATIONAL 2012; 42:1-9. [PMID: 21450345 DOI: 10.1016/j.envint.2011.03.004] [Citation(s) in RCA: 225] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2010] [Revised: 02/28/2011] [Accepted: 03/02/2011] [Indexed: 05/30/2023]
Abstract
Occurrence, removal, consumption and environmental risks of sixteen antibiotics were investigated in several sewage treatment plants (STPs) featuring different treatment levels in Hong Kong, China. Cefalexin, ofloxacin and erythromycin-H(2)O were predominant with concentrations of 1020-5640, 142-7900 and 243-4740 ng/L in influent, respectively; their mass loads were comparable to levels reported in urban regions in China and were at the high end of the range reported for western countries. The target antibiotics behaved differently depending on the treatment level employed at the STPs and relatively higher removal efficiencies (>70%) were observed for cefalexin, cefotaxime, amoxicillin, sulfamethoxazole and chloramphenicol during secondary treatment. ß-lactams were especially susceptible to removal via the activated sludge process while macrolides were recalcitrant (<20%) in the dissolved phase. Two fluoroquinolones, ofloxacin (4%) and norfloxacin (52%), differed greatly in their removal efficiencies, probably because of disparities in their pK(a) values which resulted in different sorption behaviour in sludge. Overall antibiotic consumption in Hong Kong was back-calculated based on influent mass flows and compared with available prescription and usage data. This model was verified by a good approximation of 82% and 141% to the predicted consumption of total ofloxacin, but a less accurate estimate was obtained for erythromycin usage. Risk assessment indicated that algae are susceptible to the environmental concentrations of amoxicillin as well as the mixture of the nine detected antibiotics in receiving surface waters.
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Affiliation(s)
- H W Leung
- State Key Laboratory in Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
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Thuy HTT, Nga LP, Loan TTC. Antibiotic contaminants in coastal wetlands from Vietnamese shrimp farming. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2011; 18:835-841. [PMID: 21431310 DOI: 10.1007/s11356-011-0475-7] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Accepted: 02/17/2011] [Indexed: 05/27/2023]
Abstract
BACKGROUND AND PURPOSE Shrimp culture has been expanded rapidly in recent years in coastal wetland zone of Vietnam due to favorable natural conditions. However, this industry has caused several negative impacts to the environment. One of the critical issues is the excessive application of antibiotics including human medicines. These chemicals could be released from shrimp ponds and then accumulated and contaminated of the ecosystem. This review article discusses a whole range of findings that address various aspects of the usage, occurrence and potentially environmental risks of antibiotics released from shrimp farming, with emphasis on the South Vietnam coastal wetland. METHODS The published information on the usage and occurrence of antibiotics in Vietnamese shrimp farming has been reviewed. A global comparison was also carried out. This follows by a brief overview of the transport and fate of these antibiotics in the environment. RESULTS Several antibiotics commonly used in Vietnamese shrimp culture have been detected in wastewater and sediment of the ponds, as well as in surrounding coastal wetlands, resulting in the existence of antibiotic-resistant bacteria. However, their transport and fate could not be clearly defined. CONCLUSIONS The well-documented accumulation of antibiotics in mud and sediments in Vietnamese coastal wetlands potentially poses serious risks for the local wetland ecosystems. Thus, research on the transport and fate of antibiotics' residues from the ponds into the surrounding environment is urgently needed.
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Affiliation(s)
- Hoang Thi Thanh Thuy
- Institute for Environment and Resources, 142 To Hien Thanh street, District 10, Ho Chi Minh City, Vietnam.
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31
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Sturini M, Speltini A, Maraschi F, Profumo A, Pretali L, Fasani E, Albini A. Photochemical degradation of marbofloxacin and enrofloxacin in natural waters. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:4564-4569. [PMID: 20481547 DOI: 10.1021/es100278n] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The photochemical fate of Marbofloxacin (MAR) and Enrofloxacin (ENR), two Fluoroquinolones (FQs) largely used as veterinary bactericides known to be present in surface waters, was investigated in aqueous solution. The degradation of these pollutants (5-50 microg L(-1) starting concentration) was complete in about 1 h by exposure to solar light (summer) and obeyed a first-order kinetics. The structure of the primary photoproducts was determined. Those from ENR arose through three paths, namely, oxidative degradation of the piperazine side-chain, reductive defluorination, and fluorine solvolysis. More heavily degraded products that had been previously reported were rationalized as secondary photoproducts from the present ones. As for MAR, this underwent homolytic cleavage of the tetrahydrooxadiazine moiety to give two quinolinols. All of the primary products were themselves degraded in about 1 h. The photoreactions rates were scarcely affected by Ca(2+) (200 mg L(-1)), Mg(2+) (30 mg L(-1)), Cl(-) (30 mg L(-1)), and humic acid (1 mg L(-1)), but increased in the presence of phosphate (20 mg L(-1)). The fastest degradation of ENR occurred at pH about 8 where the zwitterionic form was present, while in the case of MAR the cationic form was the most reactive.
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Affiliation(s)
- Michela Sturini
- Dipartimento di Chimica Generale, Universita di Pavia, via Taramelli 12, 27100 Pavia, Italy
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Lombardo-Agüí M, García-Campaña AM, Gámiz-Gracia L, Cruces Blanco C. Laser induced fluorescence coupled to capillary electrophoresis for the determination of fluoroquinolones in foods of animal origin using molecularly imprinted polymers. J Chromatogr A 2010; 1217:2237-42. [DOI: 10.1016/j.chroma.2010.02.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2009] [Revised: 02/01/2010] [Accepted: 02/10/2010] [Indexed: 10/19/2022]
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Morales-Cid G, Fekete A, Simonet BM, Lehmann R, Cárdenas S, Zhang X, Valcárcel M, Schmitt-Kopplin P. In Situ Synthesis of Magnetic Multiwalled Carbon Nanotube Composites for the Clean-up of (Fluoro)Quinolones from Human Plasma Prior to Ultrahigh Pressure Liquid Chromatography Analysis. Anal Chem 2010; 82:2743-52. [DOI: 10.1021/ac902631h] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gabriel Morales-Cid
- Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,
| | - Agnes Fekete
- Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,
| | - Bartolomé M. Simonet
- Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,
| | - Rainer Lehmann
- Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,
| | - Soledad Cárdenas
- Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,
| | - Xianmin Zhang
- Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,
| | - Miguel Valcárcel
- Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,
| | - Philippe Schmitt-Kopplin
- Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,
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Aristilde L, Sposito G. Binding of ciprofloxacin by humic substances: a molecular dynamics study. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2010; 29:90-98. [PMID: 20821423 DOI: 10.1002/etc.19] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A comprehensive assessment of the potential impacts of antimicrobials released into the environment requires an understanding of their sequestration by natural particles. Of particular interest are the strong interactions of antimicrobials with natural organic matter (NOM), which are believed to reduce their bioavailability, retard their abiotic and biotic degradation, and facilitate their persistence in soils and aquatic sediments. Molecular dynamics (MD) relaxation studies of a widely used fluoroquinolone antibiotic, ciprofloxacin (Cipro), interacting with a model humic substance (HS) in a hydrated environment, were performed to elucidate the mechanisms of these interactions. Specifically, a zwitterionic Cipro molecule, the predominant species at circumneutral pH, was reacted either with protonated HS or deprotonated HS bearing Ca, Mg, or Fe(II) cations. The HS underwent conformational changes through rearrangements of its hydrophobic and hydrophilic regions and disruption of its intramolecular H-bonds to facilitate favorable intermolecular H-bonding interactions with Cipro. Complexation of the metal cations with HS carboxylates appeared to impede binding of the positively charged amino group of Cipro with these negatively charged HS complexation sites. On the other hand, an outer-sphere complex between Cipro and the HS-bound cation led to ternary Cipro-metal-HS complexes in the case of Mg-HS and Fe(II)-HS, but no such bridging interaction occurred with Ca-HS. The results suggested that the ionic potential (valence/ionic radius) of the divalent cation may be a determining factor in the formation of the ternary complex, with high ionic potential favoring the bridging interaction. Environ. Toxicol. Chem. 2010;29:90-98. (c) 2009 SETAC.
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Affiliation(s)
- Ludmilla Aristilde
- Molecular Toxicology Group, University of California at Berkeley, Berkeley, California 94720-3104, USA.
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Lombardo-Agüí M, Gámiz-Gracia L, García-Campaña AM, Cruces-Blanco C. Sensitive determination of fluoroquinolone residues in waters by capillary electrophoresis with laser-induced fluorescence detection. Anal Bioanal Chem 2009; 396:1551-7. [DOI: 10.1007/s00216-009-3309-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2009] [Revised: 11/10/2009] [Accepted: 11/10/2009] [Indexed: 10/20/2022]
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Hefnawy MM, Sultan M, Al-Johar H. Development of Capillary Electrophoresis Technique for Simultaneous Measurement of Amlodipine and Atorvastatin from Their Combination Drug Formulations. J LIQ CHROMATOGR R T 2009. [DOI: 10.1080/10826070903320681] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mohamed M. Hefnawy
- a Department of Pharmaceutical Chemistry , College of Pharmacy, King Saud University , Riyadh, Saudi Arabia
| | - Maha Sultan
- a Department of Pharmaceutical Chemistry , College of Pharmacy, King Saud University , Riyadh, Saudi Arabia
| | - Haya Al-Johar
- a Department of Pharmaceutical Chemistry , College of Pharmacy, King Saud University , Riyadh, Saudi Arabia
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Carmosini N, Lee LS. Ciprofloxacin sorption by dissolved organic carbon from reference and bio-waste materials. CHEMOSPHERE 2009; 77:813-820. [PMID: 19716154 DOI: 10.1016/j.chemosphere.2009.08.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 08/03/2009] [Accepted: 08/03/2009] [Indexed: 05/28/2023]
Abstract
Amphoteric pharmaceuticals are released to the environment in treated wastewater, medicated aquaculture feed, and through land disposal of livestock wastes and municipal biosolids. These wastes are rich in dissolved organic carbon (DOC), which may bind and potentially enhance pharmaceutical transport in the environment. To assess this potential, the antimicrobial ciprofloxacin (CIP) was chosen as a model amphoteric pharmaceutical to quantify DOC-water sorption coefficients (K(doc), L kg(-1)DOC) for four reference humic materials with varying chemical properties, digested and undigested municipal biosolids, treated municipal wastewater, and beef lagoon wastewater. For reference humic materials, the predominance of sorption by cation exchange was exemplified by decreasing sorption with increasing pH and ionic strength, as well as highly predictable relationships between the sorbed CIP concentration normalized to the DOC charge versus the free aqueous concentration of the CIP cation. In contrast to humic materials, however, sorption to DOC from digested biosolids was low and showed no pH dependence, suggesting that additional weaker mechanisms contributed to binding interactions. CIP had no quantifiable affinity for DOC from undigested biosolids, treated wastewater, or beef lagoon wastewater. With K(doc) values of approximately 10(4)L kg(-1) estimated for CIP concentrations reported in biosolids ( approximately 20-60 microg kg(-1)wwt), the DOC measured for digested biosolids in this study (40 mg L(-1)) could increase CIP mobility by up to approximately 15%, thus DOC-facilitated transport should be considered in environmental fate assessments for amphoteric pharmaceuticals. However, the potential for waste-derived DOC to enhance CIP transport would have been greatly overestimated using information derived only from reference humic materials.
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Affiliation(s)
- Nadia Carmosini
- Department of Chemistry, University of Wisconsin - La Crosse, 1725 State St., La Crosse, WI 54601, USA
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38
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Prabhakaran D, Sukul P, Lamshöft M, Maheswari MA, Zühlke S, Spiteller M. Photolysis of difloxacin and sarafloxacin in aqueous systems. CHEMOSPHERE 2009; 77:739-46. [PMID: 19751946 DOI: 10.1016/j.chemosphere.2009.08.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Revised: 08/18/2009] [Accepted: 08/18/2009] [Indexed: 05/25/2023]
Abstract
The photodegradation of two fluoroquinolone veterinary antibiotics, difloxacin (DIF) and sarafloxacin (SARA) has been explored for the first time in aqueous systems. The study was performed to evaluate the influence of pH, inorganics, humic substances, and other additives. The drugs followed first-order degradation kinetics in matrix free aqueous medium with a rate constant 'k' value of 0.82 and 0.26 h(-1) for DIF and SARA, respectively. Studies performed at various pH revealed that the photolysis rates dropped sharply at pH >7 for DIF, while SARA dissipated faster with increasing pH. Humic substances acted as light barriers by attenuating the light intensity, to retard the drug degradation process. However, rapid drug dissipation was observed in the presence of additives like acetone, hydrogen peroxide, and phosphates, while inorganics such as fluoride, nitrate, and sulfate did not influence the drug photodegradation. Studies on the photolysis of DIF and SARA in river water revealed that both the drugs degraded rapidly under conditions that were relevant to natural systems, following direct photolysis mechanism. It was observed that SARA was the primary photoproduct of DIF and showed relatively a higher persistence than DIF. The findings were also substantiated by the quantum yield (Phi(c)) calculations. The analytical measurements were carried out with LC-MS/MS.
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Affiliation(s)
- Deivasigamani Prabhakaran
- Institute of Environmental Research (INFU), Dortmund University of Technology, Otto-Hahn-Strasse 6, D44221 Dortmund, Germany
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39
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Lai HT, Lin JJ. Degradation of oxolinic acid and flumequine in aquaculture pond waters and sediments. CHEMOSPHERE 2009; 75:462-468. [PMID: 19230954 DOI: 10.1016/j.chemosphere.2008.12.060] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2008] [Revised: 12/24/2008] [Accepted: 12/29/2008] [Indexed: 05/27/2023]
Abstract
Oxolinic acid (OA) and flumequine (FLU) are two of the quinolone antibiotics (QAs) that are widely used in aquaculture. The purpose of this study was to understand the fates of OA and FLU in waters and sediment slurries from aquaculture ponds in a laboratory experiment. Waters and sediments were sampled from an eel (Anguilla japonica) pond and a shrimp (Penaeus vannamei) pond. The effects of light, microbial activities, and temperature on the degradation of these two QAs were elucidated. Results indicated that light plays a major role in the degradation of OA and FLU in waters and sediment slurries. Under illuminated and non-sterile conditions, the half-lives (t(1/2)) of OA were 2.3-4.8 and 9.5-15.0 days in the waters and sediment slurries, respectively. For FLU, under the same conditions, t(1/2) values were 1.9-2.3 and 3.6-6.4 days, respectively. Photodegradation of OA and FLU was much faster in water than in sediment slurry. In both environments, degradation became very slow or would plateau after only minimal change in the dark. Besides the effect of light, biodegradation had very minor effects on the degradation of the two QAs in the sediment slurries. The only independent biodegradation was found when OA was placed in shrimp pond sediment slurry, but at a much lower rate (t(1/2) of 98.7 days) than in light. Biodegradation of FLU was also found in the eel pond sediment slurry but only through an additional connection with light. Also, re-addition enhanced the degradation of OA in shrimp pond sediment slurry, but slowed the degradation of FLU in the eel pond sediment slurry in the dark. The temperature experiment in this study showed no significant effects on degradation of the two QAs in either pond waters or sediment slurries.
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Affiliation(s)
- Hong-Thih Lai
- Department of Aquatic Biosciences, National Chiayi University, 300 University Rd., Chiayi 60004, Taiwan, ROC.
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40
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Wang XL, Li AY, Zhao HC, Jin LP. A lanthanide sensitized chemiluminescence method of flow-injection for the determination of ulifloxacin and prulifloxacin. JOURNAL OF ANALYTICAL CHEMISTRY 2009. [DOI: 10.1134/s1061934809010158] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Qin W, Liu Q, Fan Y. CE determination of quinolones in the presence of bovine serum albumin. J Sep Sci 2008; 32:118-24. [DOI: 10.1002/jssc.200800336] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Liu YM, Cao JT, Tian W, Zheng YL. Determination of levofloxacin and norfloxacin by capillary electrophoresis with electrochemiluminescence detection and applications in human urine. Electrophoresis 2008; 29:3207-12. [DOI: 10.1002/elps.200800048] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Calza P, Medana C, Carbone F, Giancotti V, Baiocchi C. Characterization of intermediate compounds formed upon photoinduced degradation of quinolones by high-performance liquid chromatography/high-resolution multiple-stage mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:1533-1552. [PMID: 18421702 DOI: 10.1002/rcm.3537] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The paper deals with the photocatalytic transformation of two antibacterial agents, ofloxacin and ciprofloxacin, under simulated solar irradiation using titanium dioxide as photocatalyst. The investigation involved monitoring decomposition of the drugs, identifying intermediate compounds, assessing mineralization, and evaluating the toxicity of drug derivatives. High-resolution mass spectrometry was employed to assess evolution of the photocatalyzed process over time. Respectively 15 and 8 main species were identified after transformation of ofloxacin and ciprofloxacin. Through the full analysis of MS and MSn spectra and a comparison with parent drug fragmentation pathways, the different isomers were characterized. In the ofloxacin molecule, the initial transformation attacks are confined to the piperazine moiety and to the methyl groups, while the fluoroquinolone core is unmodified. Conversely, ciprofloxacin degradation involves two parts of the molecule: the piperazinic moiety and the quinolone moiety. All these intermediates are easily degraded and by 4 h mineralization is complete. Toxicity assays using Vibrio fischeri prove that neither ciprofloxacin nor its intermediates exhibit acute toxicity. In ofloxacin the secondary degradation products exhibit toxicity; a correlation exists between the evolution of the intermediate compounds and the toxicity connected to them.
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Affiliation(s)
- Paola Calza
- Dipartimento di Chimica Analitica, Università di Torino, via P. Giuria 5, 10125 Torino, Italy.
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Elbashir AA, Saad B, Salhin Mohamed Ali A, Al‐Azzam KMM, Aboul‐Enein HY. Validated Stability Indicating Assay of Gemifloxacin and Lomefloxacin in Tablet Formulations by Capillary Electrophoresis. J LIQ CHROMATOGR R T 2008. [DOI: 10.1080/10826070802039481] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Abdalla A. Elbashir
- a School of Chemical Sciences , Universiti Sains Malaysia , Penang, Malaysia
| | - Bahruddin Saad
- a School of Chemical Sciences , Universiti Sains Malaysia , Penang, Malaysia
| | | | | | - Hassan Y. Aboul‐Enein
- c Pharmaceutical and Medicinal Chemistry Department , National Research Center , Dokki, Cairo, Egypt
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Abstract
Over the last two decades, the development of capillary electrophoresis (CE) instruments has lead to systems with programmable samplers, separation columns, separation buffers, and detection devices comparable visually in many aspects to the setup of classical chromatography. Two characteristics make CE essentially different from chromatography and are the basis of the CE way of thinking: first is the injection type and the liquid flow within the capillary. When the injection is made hydrodynamically (such as in most of the applications found in the literature), the injected volumes are directly dependent on the type and size of the separation capillary. The second characteristic is that in CE, buffer velocity is not pressure-driven, as in liquid chromatography, but is electrokinetically governed by the quality of the capillary surface (separation buffer dependent surface charge) inducing an electroosmotic flow (EOF). The EOF undergoes small variations and is not necessarily identical from one separation or day to the other. The direct consequence is that the migration time of the analytes apparently nonreproducible, although the velocity of the ions is the same. The effective mobility (field strength normalized velocity) of the ions is a possible parameterization from acquired time-scale to effective mobility-scale electropherograms leading to a reproducible visualization and better quantification with a direct relation to structural characters of the analytes (i.e., charge and size; see Chapter 23).
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46
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12 CE in impurity profiling of drugs. CAPILLARY ELECTROPHORESIS METHODS FOR PHARMACEUTICAL ANALYSIS 2008. [DOI: 10.1016/s0149-6395(07)00012-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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47
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Study of the interactions between fluoroquinolones and human serum albumin by affinity capillary electrophoresis and fluorescence method. Anal Chim Acta 2007; 603:101-10. [DOI: 10.1016/j.aca.2007.09.021] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2007] [Revised: 08/28/2007] [Accepted: 09/13/2007] [Indexed: 11/22/2022]
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Feitosa-Felizzola J, Temime B, Chiron S. Evaluating on-line solid-phase extraction coupled to liquid chromatography–ion trap mass spectrometry for reliable quantification and confirmation of several classes of antibiotics in urban wastewaters. J Chromatogr A 2007; 1164:95-104. [PMID: 17644102 DOI: 10.1016/j.chroma.2007.06.071] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Revised: 06/25/2007] [Accepted: 06/26/2007] [Indexed: 10/23/2022]
Abstract
This study provides an evaluation of on-line solid-phase extraction (SPE) and liquid chromatography (LC) in combination with ion trap (IT) mass spectrometry for the simultaneous routine analysis of 12 antibiotics belonging to multiple classes together with carbamazepine and propranolol in sewage treatment effluents. The on-line SPE step warranted high sensitivity and high sample throughput while IT mass detection provided high selectivity for confirmation of positive samples. A single extraction procedure resulted in recoveries ranging from 40% to 120%. Limits of detection were in the 1-46 ng/L range, which constitutes an improvement of a factor of 10 with respect to the off-line SPE procedure.
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Vieno NM, Härkki H, Tuhkanen T, Kronberg L. Occurrence of pharmaceuticals in river water and their elimination in a pilot-scale drinking water treatment plant. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2007; 41:5077-84. [PMID: 17711226 DOI: 10.1021/es062720x] [Citation(s) in RCA: 305] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The occurrence of four beta blockers, one antiepileptic drug, one lipid regulator, four anti-inflammatories, and three fluoroquinolones was studied in a river receiving sewage effluents. All compounds but two of the fluoroquinolones were observed in the water above their limit of quantification concentrations. The highest concentrations (up to 107 ng L(-1)) of the compounds were measured during the winter months. The river water was passed to a pilot-scale drinking water treatment plant, and the elimination of the pharmaceuticals was followed during the treatment. The processes applied by the plant consisted of ferric salt coagulation, rapid sand filtration, ozonation, two-stage granular activated carbon filtration (GAC), and UV disinfection. Following the coagulation, sedimentation, and rapid sand filtration, the studied pharmaceuticals were found to be eliminated only by an average of 13%. An efficient elimination was found to take place during ozonation at an ozone dose of about 1 mg L(-1) (i.e., 0.2-0.4 mg of O3/ mg of TOC). Following this treatment, the concentrations of the pharmaceuticals dropped to below the quantification limits with the exception of ciprofloxacin. Atenolol, sotalol, and ciprofloxacin, the most hydrophilic of the studied pharmaceuticals, were not fully eliminated during the GAC filtrations. All in all, the treatment train was found to very effectively eliminate the pharmaceuticals from the rawwater. The only compound that was found to pass almost unaffected through all the treatment steps was ciprofloxacin.
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Affiliation(s)
- Niina M Vieno
- Abo Akademi University, Laboratory of Organic Chemistry, Biskopsgatan 8, FIN-20500 Turku, Finland
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50
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Murillo JA, Alañón Molina A, Muñoz de la Peña A, Durán Merás I, Jiménez Girón A. Resolution of Ofloxacin–Ciprofloxacin and Ofloxacin–Norfloxacin Binary Mixtures by Flow-Injection Chemiluminescence in Combination with Partial Least Squares Multivariate Calibration. J Fluoresc 2007; 17:481-91. [PMID: 17577647 DOI: 10.1007/s10895-007-0198-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2007] [Accepted: 05/03/2007] [Indexed: 11/29/2022]
Abstract
A flow-injection chemiluminescence (CL) method is described for the determination of ciprofloxacin (CIP), norfloxacin (NOR) and ofloxacin (OFL), commonly used antibiotics of the fluoroquinolones family. The method is based on the CL reaction of the fluoroquinolones with tris(2,2'-bipyridyl) ruthenium(II) and Ce (IV), in sulfuric acid medium. The maximum CL emission, given at 0.45 min for CIP, at 0.35 min for NOR and at 0.04 min for OFL, respectively, were measured, allowing the simple application of the proposed method to the routine analysis of the antibiotics. The methods were applied to the determination of CIP, NOR and OFL, in several pharmaceutical preparations, with very satisfactory results, and validated by a previously reported HPLC method. The time-resolved equipment allowed the measurement of the kinetic evolution of the chemiluminescence signals. In base to the differences in the kinetic behaviour of ofloxacin with respect to ciprofloxacin and norfloxacin, binary mixtures of the drugs were resolved by using the time-resolved chemiluminescence signals, in combination with first-order partial least-squares (PLS) multivariate calibration.
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Affiliation(s)
- J A Murillo
- Department of Analytical Chemistry and Foods Technology, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
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