A luminescent europium complex for the selective detection of trace amounts of aldicarb sulfoxide and prometryne

作者：Anwar Zeinab M; Ibrahim Ibrahim A; Abdel Salam Enas T; Kamel Rasha M^*; El Asfoury Mahmoud H

来源：Journal of Molecular Structure, 2017, 1135: 44-52.

DOI：10.1016/j.molstruc.2017.01.043

• Pesticides
• Europium
• Static quenching
• Luminescence

The interaction between luminescent Eu(TAN)(2)(Phen) ternary complex (where TAN = 4,4,4-Trifluoro-1(2-naphthyl)-1,3-butanedione and Phen = 1,10 phenanthroline) with prometryne and aldicarb sulfoxide was studied by fluorescence spectroscopic technique. The results showed that the luminescence of europium complex was strongly quenched at lambda = 614 nm by prometryne and aldicarb sulfoxide at pH 7.4 using PIPES buffer solution. The quenching mechanism was discussed to be a static quenching procedure, which was proved by the Stern Volmer (K-SV) constants at different temperatures where the detection limits are 033 and 0.18 mu mol L-1 for prometryne and aldicarb sulfoxide, respectively. According to Lineweaver-Burk equation at different temperatures, the thermodynamic parameters, Delta H, Delta S and Delta G associated with the interaction of the complex with the two pesticides were calculated.

• 出版日期2017-5-5