Determination of enrofloxacin by room-temperature phosphorimetry after solid phase extraction on an acrylic polymer sorbent

Souza, Cabrini Ferraz de; Martins, Renata K.S.; Silva, Andrea R. da; Cunha, Alessandra L. M. C. da; Aucélio, Ricardo Q.

doi:10.1016/j.saa.2012.01.043

Cited by 16 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, its determination evaded our experimental capabilities. However, the phosphorescence spectrum of diclo has been reported, from which the triplet level can be estimated to correspond to ,25000 cm À1 , [23] its maximum absorption being at 276 nm (e ¼ 10400 L Â mol À1 Â cm À1 ). [17a] It is therefore more than likely that the longer decay times of the Eu 3þ are due to the involvement of the diclo 3 T state, which can very efficiently receive energy from Eu 3þ 5 L 6 , after which only part of the energy is transferred into 5 D 3 .…”

Section: Resultsmentioning

confidence: 99%

Photophysical Properties of Rare Earth Diclofenac Complexes in the Solid State

et al. 2015

View full text Add to dashboard Cite

We elaborate on the use of the comparably complex, but widely used and readily accessible pharmaceutical diclofenac, the molecular structure of which contains aromatic units with chloro-, amine-, and carboxylate substituents, all of which were deemed to be useful in the formation of efficiently luminescing rare earth complexes. However, efficient luminophores with quantum yields of 48 % in the case of Tb 3þ could only be obtained by the additional employment of chelating N-donors (1,10-phenanthroline and 2,2 0 -bipyridine), while analogous Eu 3þ complexes remained inefficient with quantum yields below 13 %. They nevertheless exhibited luminescence decay times of up to 1668 ms -unusual for such low efficiencies, which suggest an intermediate involvement of the diclofenac triplet state. Finally, the new complexes were also tested for their applicability as an analytical tool for the trace analysis of diclofenac, which has in the past proved to be an environmental hazard. To this end, a determination limit of 1.2 mg L À1 could be accomplished, which is thought to be the limit to which it may be harmful to the continental fauna.

show abstract

Section: Resultsmentioning

confidence: 99%

Photophysical Properties of Rare Earth Diclofenac Complexes in the Solid State

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In recent years, many analytical methods have been developed for the measurement of Enro (Table 1), including chemiluminescence (CL) enzyme immunoassay [4], enzyme‐linked immunosorbent immunoassay [5], the phosphorimetric method [6], high‐performance liquid chromatography [7] and CL analysis [8]. All these techniques have their advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a modified electrode based on multi‐walled carbon nanotubes decorated with iron oxide nanoparticles for the determination of enrofloxacin

Khaloo

Mozaffari

Barekat

et al. 2015

Micro & Nano Letters

View full text Add to dashboard Cite

Multi-walled carbon nanotubes decorated with Fe 3 O 4 nanoparticles (Fe 3 O 4 NPs/MWCNTs) were prepared and used to fabricate an electrochemical sensor for the determination of enrofloxacin. The electrochemical response of the carbon paste electrode (CPE) modified with Fe 3 O 4 NPs/MWCNTs towards enrofloxacin was investigated by cyclic voltammetry and differential pulse voltammetry. The results indicated a remarkable growth in the oxidation peak current together with negative shift in the oxidation peak potential for enrofloxacin, in comparison to both the unmodified CPE and the CPE modified with MWCNTs (MWCNT/CPE). The prepared sensor displayed a rapid and sensitive response towards enrofloxacin, which was attributed to the synergetic electrocatalytic effect of Fe 3 O 4 NPs and MWCNTs. The sensitivity enhancement with nearly three orders of magnitude (0.3-100 μM) was gained, compared with the MWCNT/CPE, with a detection limit of 0.09 µM (S/N = 3). The proposed method was successfully applied for the highly sensitive determination of trace amounts of enrofloxacin in cow's milk, egg, honey and chicken samples.

show abstract

“…Notably, only a few compounds phosphoresce compared to the much larger number which fluoresce or absorb radiation . Thus, as a detection technology, phosphorimetry possesses higher selectivity than fluorometry. , Therefore, phosphorimetry is widely used in the fields of drug assay, − metal ions detection, , molecular recognition, , diseases prediction, , and novel photoelectric materials. , …”

Section: Introductionmentioning

confidence: 99%

Ion-Unquenchable and Thermally “On–Off” Reversible Room Temperature Phosphorescence of 3-Bromoquinoline Induced by Supramolecular Gels

Wang

Yang

et al. 2014

Langmuir

View full text Add to dashboard Cite

Ion-unquenchable and thermally on-off reversible room temperature phosphorescence (RTP) can be induced by entrapping 3-bromoquinoline (3-BrQ) into supramolecular gels formed by the self-assembly of a sorbitol derivative (DBS). In comparison with conventional substrates inducing RTP, the gel state 3-BrQ/DBS can produce strong RTP due to the efficient restriction of the vibration of 3-BrQ. Notably, the rather inconvenient deoxygenation is no longer necessary in the preparation of 3-BrQ/DBS gels. The produced RTP was found to be very fast to reach stable, not depending on the standing time. As a reference, in the liquid state of 3-BrQ/sodium deoxycholate (NaDC), stable RTP can be observed after standing for 5 h. The investigation of RTP quenching indicates that the mechanism of RTP induced by DBS gels mainly involves the microenvironment in which 3-BrQ is located. 3-BrQ was entrapped in the hydrophobic 3D network structure of DBS gels, thereby restricting the motion and collision of 3-BrQ and avoiding RTP quenching and additionally quenching by ions. Furthermore, the RTP of 3-BrQ/DBS gels show an excellent "on-off" effect at 10 or 80 °C. This indicates that the solid DBS gel is beneficial for the preparation of RTP sensor devices.

show abstract

Determination of enrofloxacin by room-temperature phosphorimetry after solid phase extraction on an acrylic polymer sorbent

Cited by 16 publications

References 26 publications

Photophysical Properties of Rare Earth Diclofenac Complexes in the Solid State

Photophysical Properties of Rare Earth Diclofenac Complexes in the Solid State

Fabrication of a modified electrode based on multi‐walled carbon nanotubes decorated with iron oxide nanoparticles for the determination of enrofloxacin

Ion-Unquenchable and Thermally “On–Off” Reversible Room Temperature Phosphorescence of 3-Bromoquinoline Induced by Supramolecular Gels

Contact Info

Product

Resources

About