Improvements in europium sensitized fluorimetric determination of demeclocycline and methacycline

Mahedero, M. C.; Bohoyo-Gil, D.; Salinas, F.; Ardila, T.; Airado, D.; Roldán, Belén

doi:10.1016/j.jpba.2004.10.040

Cited by 18 publications

(9 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…OTC is a broad-spectrum antibiotic of the tetracycline family which is widely used in veterinary medicine (De Liguoro et al, 2003;Mahedero et al, 2005;Ja et al, 2008). This pharmaceutical is not efficiently removed by conventional wastewater treatments which results in its frequent detection in treated wastewaters and in water bodies of agricultural regions (Tong et al, 2009;Chen et al, 2012;Cavenati et al, 2012).…”

Section: Otc Removal Efficiencymentioning

confidence: 99%

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Dordio

Carvalho

2013

Science of The Total Environment

View full text Add to dashboard Cite

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. H I G H L I G H T S• CW with LECA substrate and Phragmites plants tested with agricultural wastewaters.• High removals of TSS, COD, NH 4 -N, polyphenols, a pharmaceutical and a pesticide.• Contact time of wastewaters with beds ranged from 3 to 9days in batch conditions.• Promising results suggest more studies in full-scale and more realistic conditions. Constructed wetlands (CWs) are receiving a renewed attention as a viable phytotechnology for treating agricultural wastewaters and for the removal of more specific pollutants, in particular recalcitrant ones. In this work, the performance of CW mesocosms using light expanded clay aggregates (LECA) as the bed's substrate and planted with Phragmites australis was investigated for treatment of olive mill wastewater (OMW), swine wastewater (SW) contaminated with oxytetracycline and water contaminated with herbicide MCPA (2-methyl-4-chlorophenoxyacetic acid). Both wastewaters (OMW and SW) initially presented high organic matter content and total suspended solids which were removed by the system with efficiencies higher than 80%. Removal of polyphenols in OMW and nitrogen compounds in SW also showed similar or higher efficiencies in comparison with other treatment systems reported in the literature. The antibiotic oxytetracycline was completely removed from SW within the assay period in unplanted LECA beds, but planted beds allowed a significantly faster removal. In regard to water contaminated with MCPA, the results showed that LECA has a large sorption capacity for this herbicide (removal efficiencies of 56-97%). In general, considerably higher pollutant removal efficiencies were obtained when plants were used (up to 28% higher). The results obtained are indicative that CWs with LECA as substrate may be an adequate option for agricultural wastewater treatment. a b s t r a c t a r t i c l e i n f o

show abstract

Section: Otc Removal Efficiencymentioning

confidence: 99%

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Dordio

Carvalho

2013

Science of The Total Environment

View full text Add to dashboard Cite

show abstract

“…To evaluate the magnitude and nature of the quenching phenomenon, the fluorescence emission spectra were analyzed using the well‐known Stern–Volmer equation. The Stern–Volmer relation was analyzed by using the spectral domain .

F_{0} / F = 1 + K_{SV} [Q] = 1 + K_{normalq} [Q]

where F 0 and F are the fluorescence intestines before and after the addition of the quencher, respectively; K sv is the dynamic quenching constant; K q is the quenching rate constant; [ Q ] is the concentration of the quencher; τ 0 is the average life time of the molecule without quencher and its value is considered as 10 −8 s.…”

Section: Resultsmentioning

confidence: 99%

“…To evaluate the magnitude and nature of the quenching phenomenon, the fluorescence emission spectra were analyzed using the well-known Stern-Volmer equation. The Stern-Volmer relation was analyzed by using the spectral domain [16].…”

Section: Steady-state Spectroscopic Studiesmentioning

confidence: 99%

Investigation of Optical Spectroscopic and Computational Binding Mode of Bovine Serum Albumin with 1, 4‐Bis ((4‐((4‐Heptylpiperazin‐1‐yl) Methyl)‐1H‐1, 2, 3‐Triazol‐1‐yl) Methyl) Benzene

Karthikeyan

Chinnathambi

Kannan

et al. 2015

J Biochem & Molecular Tox

View full text Add to dashboard Cite

A newly synthesized 1, 4-bis ((4-((4-heptylpiperazin-1-yl) methyl)-1H-1, 2, 3-triazol-1-yl) methyl) benzene from the family of piperazine derivative has good anticancer activity, antibacterial and low toxic nature; its binding characteristics are therefore of huge interest for understanding pharmacokinetic mechanism of the drug. The binding of piperazine derivative to bovine serum albumin (BSA) was investigated using fluorescence spectroscopy. The molecular distance r between the donor (BSA) and acceptor (piperazine derivative) was estimated according to Forster's theory of nonradiative energy transfer. The physicochemical properties of piperazine derivative, which induced structural changes in BSA, have been studied by circular dichroism and those chemical environmental changes were probed using Raman spectroscopic analysis. Further, the binding dynamics was expounded by synchronous fluorescence spectroscopy and molecular modeling studies explored the hydrophobic interaction and hydrogen bonding results, which stabilize the interaction.

show abstract

“…Mahedero et al [21] has studied the effect of micellar systems on the enhancement of the emission fluorescence of tetracyclines complexes with europium 3+ and terbium 3+ . The authors examined several micellar media, including cetyltrimethylammonium chloride, cetylpyridinium monohydrate and sodium dodecylsulfate for the study of the complexes of demeclocycline and methacycline with europium 3+ , in the presence of ethylenediaminetetraacetic acid (EDTA) as coligand.…”

Section: Spectrophotometrymentioning

confidence: 99%

Methacycline: A Review of Analytical Methods

Silva¹,

Salgado

2012

CPA

View full text Add to dashboard Cite

Methacycline is a broad spectrum, semisynthetic antibiotic prepared from oxytetracycline. Its antibacterial spectrum is as same as that of tetracycline, but its efficacy is superior to that of oxytetracycline and tetracycline. There is no standard technique for analysis and/or detection of methacycline. Practical requirements for high-sensitivity analysis and the need for a specialist laboratory setting create challenges for routine analysis. Several existing analytical techniques, which offer flexible and broad-based methods of analysis and detection, have been discussed in this manuscript, focusing on bioanalytical, pharmaceutical QC applications and food analysis. This review will examine the published analytical methods reported for determination of methacycline, presenting (a) sample pretreatment methods such as liquidliquid extraction (LLE) and solid phase extraction (SPE), (b) separation methods such as thin layer chromatography, high performance liquid chromatography (HPLC) and capillary electrophoresis (CE) and (c) others such as potentiometry, spectrophotometry and microbiological assay, from which it can be seen that HPLC methods have been used most extensively.

show abstract

Improvements in europium sensitized fluorimetric determination of demeclocycline and methacycline

Cited by 18 publications

References 27 publications

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

Investigation of Optical Spectroscopic and Computational Binding Mode of Bovine Serum Albumin with 1, 4‐Bis ((4‐((4‐Heptylpiperazin‐1‐yl) Methyl)‐1H‐1, 2, 3‐Triazol‐1‐yl) Methyl) Benzene

Methacycline: A Review of Analytical Methods

Contact Info

Product

Resources

About