Vapour Pressures of Diethyl Selenide, Tetramethyl Tin and Tetramethyl Lead
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Tetramethyl lead absorption: a report of human exposure to a high level of tetramethyl lead.
Accidental human exposure to a high level of tetramethyl lead is described. Tetramethyl lead is blended with petrol as an antiknock agent, and it has similar physical properties to tetraethyl lead. The patient had high levels of lead in urine, averaging 4-75 mumol (983 mug) daily for the first four days after exposure and he continued to have raised levels of urinary lead for six months. He had...
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Mass spectra of C(CI-I3)" Si(CI-I3)" Ge(CI-I3)" Sn(CI-I3)" and Pb (CI-Ia), were obtained with a Consolidated 21103 mass spectrometer. I sotopic abundan ces of carbon , si licon , germanium, tin, and lead were obtained from t he observed spectra and used to calculate the monoisotopic spectra. The mass spectra of t he Group IV tetramethyls a re qualitatively similar. The principal ion in each cas...
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Tetramethyl lead (TML) has recently been adopted as an antiknock substance in gasoline. In some industries, tetramethyl lead has been substituted for tetraethyl lead (TEL) mixture or "ethylfluid". This recent development is the result of technical research which has shown that there is a more uniform octane distribution in all light and heavy fractions of gasoline in the combustion cylinders wi...
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-The adsorption and oxidation of 3,3',5,5'-tetramethyl benzidine (TMB) on hectorite has been investigated using X-ray powder diffraction, ultraviolet-visible spectroscopy, electron spin resonance, and infrared spectroscopy. The molecule adsorbed by cation exchange at low adsorption levels and oxidized to the monomeric radical cation (yellow). At higher adsorption levels, intercalation of TMB oc...
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It was possible to quantitate the tetramethyl-p-phenylenediamine (TMPD) oxidase reaction in Azotobacter vinelandii strain O using turbidimetrically standarized resting cell suspensions. The Q(O2) value obtained for whole cell oxidation of ascorbate-TMPD appeared to reflect the full measure of the high respiratory oxidative capability usually exhibited by this genera of organisms. The Q(O2) valu...
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ژورنال
عنوان ژورنال: Proceedings of the Imperial Academy
سال: 1929
ISSN: 0369-9846,1881-1140
DOI: 10.2183/pjab1912.5.78