Sodium iodide with germanium

Concentrated hydrochloric acid also dissolves the trichloride, about 100 g. of the latter dissolving in 1 litre of acid at 100° C.7 Dissolution in hydriodic acid is accompanied by evolution of heat and the triiodide is formed.8 Ethyl iodide reacts similarly.9 Double decomposition reactions occur w hen arsenic trichloride is heated with phosphorus triiodide, stannic iodide or germanium iodide, the reactions being complete.10 Similarly, potassium iodide heated with arsenic trichloride in a sealed tube at 210° C., and potassium bromide at 180° to 200° C., form respectively arsenic triiodide and tribromide.11 Stannous chloride, added to the solution in hydrochloric acid, causes reduction to arsenic (see p. 29). Arsenic trichloride may be completely separated from germanium chloride by extraction with concentrated hydrochloric acid.12 Ammonium, sodium and cobaltic chlorides react with arsenic trichloride to form additive compounds with magnesium, zinc and chromic chlorides there is no reaction.13... 

Alpha-particle detector Beta-particle detector Gamma-ray detector proportional counters silicon (Si) diode with spectrometer proportional counters Geiger-Muller counters liquid scintillation (LS) counters thallium-activated sodium iodide (Nal(Tl) detector with spectrometer germanium (Ge) detector with spectrometer... 

A scintillation device is a material that, upon interaction with any radiation, produces light that is proportional to the energy of the radiation. Sodium iodide crystals or germanium serve as scintillation materials. 

There are limitations associated with in vivo counting uranium measurements. First, soluble uranium is readily excreted, with fractions retained for varying periods in the bone and kidney, so detectability depends on factors such as intake quantity, chemical and physical form, biodistribution fraction, time since intake, background uranium contribution, analysis time, and detection system efficiency. Second, only the isotope can be detected using the sodium iodide or hyperpure germanium detectors, since... 

A multichannel analyzer (MCA) with a minimum of 4096 channels should be connected to a keyboard and display screen for input and output of data and interaction with a computer. Several kits are available for the conversion of personal computers (PCs) into MCAs. Basically there are three types of conversion kits. One makes use of board with an analogue-to-digital converter (ADC) that simply clips into the PC a second type uses a clip-in board with an external ADC and the third type uses a multichannel buffer (MCB) connected to the PC. All of these PC-based MCA systems are relatively inexpensive and are very suitable for use in germanium and sodium iodide y-ray spectrometry. 

Indeed separate experiments showed that lithium iodide reacts both with tin tetrachloride and with germanium tetrachloride, so that perfluoro-n-propyllithium made via the lithium-sodium alloy cannot be used to prepare (n-C3F7)4Sn and (n-C3F7)4Ge. Nevertheless, it is now established that perfluoro-re-propyllithium may be used to synthesize a number of new perfluoropropyl derivatives of Group IV elements, and probably similar compounds of other elements as well (9). As a result it is likely that perfluoro-alkyllithium compoimds will play a more important part in synthetic work in the future than they have in the past. 

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