Detlef Jensen

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Institut für Anorganische und Analytische Chemie, Freie Universität Berlin, D-1000 Berlin 33, F R G Z. Naturforsch. 43b, 245-247 (1988); received October 7/October 12, 1987 77Se NMR Spectra, Raman Spectra, Elemental Sulfur, Selenium Sulfides The 77Se NMR spectrum of l,2-Se2S5 exhibits one singlet at 1077.3 ppm indicating pseudorotation in solution; the same(More)
The Raman spectrum of commercial "sulfur dichloride" shows strong lines due to SC12 and S2C12 and weak Cl2 lines at 25 °C, but strong SC12 and SC14 signals at —100 °C (the latter are superimposed on the S2C12 lines). Thus, the intense Raman effect of SC14 can be used to detect small amounts of chlorine in SC12. Mixtures of SC12 and Cl2 (1:15) yield the(More)
A smaller second puncture accessory set for diagnostic laparoscopy was developed. The trocar (outside) diameter is only 4 mm. Various biopsy forceps, suction-coagulation cannula and insulated grasper has been successfully used in several hundred high risk patients where tissue samples were obtained under local anesthesia without serious complications or(More)
The HPLC retention times o f 25 cyclic compounds o f type SevSv (x = 0 8; y = 0 12) have been measured under identical conditions and are used to evaluate the factors which determine the retention. Linear relationships are derived for the dependence o f retention (Ink'-, k' = capacity factor) on ring size, number o f Se atoms, and number o f SeS bonds per(More)
weise, die Na tu r der A h n e n und den Ver lauf der S tammesen twick lung zu entr8tseln. Die Entwicklungsgeschichte l iefert dabei Iediglich ein r e g u l a t i v e s Prinzip, das Fingerzeige gibt und unse rn Biick in bes t immte Bahnen lenkt, aber nicht selbst und a!lein zu endgfilt igen Ergebnissen ffihren kann, ' Eine einyeheade Dars~eltung der hier(More)
BACKGROUND Perchlorate salts are relatively stable, soluble in water, and migrate into groundwater sources. Groundwater is an essential source for drinking water suppliers. Perchlorate bears health risks as it is identified to impair normal thyroid function by interfering with iodine uptake by the thyroid gland. The development of a sensitive analytical(More)
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