Determination of lasalocid with sensitized terbium(III) luminescence detection

Application of Tb4O7 Nanoparticles for Lasalocid and Salicylate Determination in Food Analysis

“…The study of the influence of the 2-propanol percentage on the LAS and SAL systems, in the range of 2.5–20%, showed that the maximum signal was obtained for both Tb(III)–LAS and Tb 4 O 7 NPs–LAS systems in the range of 2.5–10% 2-propanol. However, the luminescence intensity of both systems decreased at higher 2-propanol percentages, which could be attributed to the capability of the solvent to destruct the micelles, which shield the chelates and favor the intramolecular energy transfer process . The presence of 2-propanol on the SAL systems, using Tb(III) ions or NPs, caused a more negative effect since the luminescence decreased up to 8 times when the percentage was increased from 2.5 to 10%.…”

“…Taking into consideration that the presence of a synergistic reagent such as TOPO and a surfactant such as Triton X-100 notably improve the luminescence of the Tb(III)–LAS system, the influence of the concentration of these variables on the LAS and SAL systems was comparatively studied using Tb 4 O 7 NPs and Tb(III) ions. The results obtained showed that TOPO, at the concentration range of 4 × 10 –5 –8 × 10 –5 M, has a similar positive effect on both LAS and SAL systems using NPs or Tb(III) ions.…”

“…Thus, the study reported here constitutes the first attempt to use Tb 4 O 7 NPs as analytical reagents by checking their capability to obtain terbium-sensitized luminescence in the presence of lasalocid (LAS) and SAL. These compounds have been chosen as model analytes because they form luminescent complexes with Tb(III), which have been used for the development of very sensitive analytical methods. − A systematic study has been performed to compare the analytical features of the corresponding methods involving the use of Tb(III) ions and Tb 4 O 7 NPs as analytical reagents.…”

“…SAL could also be present as a metabolite of acetylsalicylate, but its use is not allowed in milk- and/or egg-producing animals for human consumption. The determination of LAS in water and feed premix samples using Tb(III) as a reagent has been previously described, but it has not been applied to the analysis of egg samples. However, the availability of a simple and fast method to detect the presence of LAS in these samples is of great interest because LAS can be present in egg samples even 9 days after treatment .…”

Spectrofluorimetric determination of buparvaquone in biological fluids, food samples and a pharmaceutical formulation by using terbium–deferasirox probe

“…The sensitisation of lanthanide ions luminescence -especially terbium and europium ions -by organic ligands, has been widely employed in some applications, such as the investigation of the function of nucleic acids, immunoassays, determination of organic compounds and chromatographic and electrophoretic detections (Dehghan et al, in press;Ioannou, Rusakova, Andrikopoulou, Glynou, & Tzompanaki, 1998;Leonard & Gunnlaugsson, 2005;Manzoori et al, in press;Miao, Liu, Hou, & Jiang, 2006;Yegorova et al, 2007;Yu, Li, & Chen, 2007), also it has been applied in food and beverage industries for determination of phenolic compounds in wine, fruit juice and tea (Andreu-Navarro, Russo, AguilarCaballos, Fernández-Romero, & Gómez-Hens, 2011;Shaghaghi, Manzoori, & Jouyban, 2008), terephthalic acid in drink samples (Caro de la Torre & Gómez-Hens, 2000), nicotinic acid and nicotinamide in food and pharmaceutical samples (Krasnova, Aguilar-Caballos, & Gómez-Hens, 2001) and lasalocid in drinking water, poultry feed and chicken liver samples (Aguilar-Caballos, Gómez-Hens, & Pérez-Bendito, 1999).…”