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Development of magnetic solid-phase extraction coupled with dispersive liquid–liquid microextraction method for the simultaneous determination of biphenyl and biphenyl oxide in water Samales

Noori Arezoo Hassan, Rezaee Mohammad, Kazemipour Maryam, Mashayekhi Hossein Ali

Acta Chromatographica

2019

Vol. 31, no. 1

1--7

A new and sensitive method, termed magnetic solid phase extraction combined with dispersive liquid–liquid microextracton (MSPE–DLLME), has been developed for the simultaneous determination of biphenyl and biphenyl oxide in water samples. Different parameters influencing the extraction efficiency, including the amount of sorbent, sorption time, type of elution solvent and its volume, type of extraction solvent and its volume, and elution time were optimized. The calibration curves were linear in the range of 0.5–100 μg/L for both of them. The limits of detection (LODs) were achieved, 0.03 μg/L for biphenyl and 0.07 μg/L for biphenyl oxide, respectively. Ultimately, the applicability of the method was successfully confirmed by the extraction and determination of biphenyl and biphenyl oxide in sea, river, tap, and water well.

Synthesis and Characterization of Some Borylated (4-Biphenyl)(N-arylamino)glyoxime Complexes

Karipcin F., Erdem-Tuncmen M.

Polish Journal of Chemistry

2009

Vol. 83, nr 4

525-535

A series of Cu(II), Ni(II) and Co(III) complexes of the type [M(Ln)2(H2O)2(BF2)2] and [Co(Ln)2PyCl(BF2)2] (where M = Cu(II) or Ni(II); n = 1, 2; L = bidentate dioxime lig ands) have been synthesized by the reactions of dioxime complexes with boron tri- fluoride diethyl ether complex in acetonitrile under nitrogen atmosphere. In all these reactions, the bridging protons of the dioxime com plexes replace BF2 groups. These complexes have been characterized by elemental analyses, FT-IR, ICP-OES, 1H NMR together with magnetic susceptibility measurements. In particular, the thermal decomposition of all the complexes was studied in nitrogen atmosphere.