Several theories as to the cause of tobacco frenching have been proposed, but each in its turn has been found to be erroneous. Kecently, it has been postulated that frenching is probably a symptom of thallium toxicity. Since the demonstration of the presence of thallium in frenched tobacco tissue in toxic amounts or its absence is essential to an evaluation of the thalhum-toxicity theory, and t...

In this paper, magnetically multiwalled carbon nanotubes (MMWCNTs) nanocomposite modified by methyl-2-[2-(2-2-[2-(methoxycarbonyl) phenoxy] ethoxyethoxy) ethoxy] benzoate was applied for magnetic solid-phase extraction (MSPE) of thallium(I) ions. Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) spectrometry and vibrat...