Sentence examples for double ammonium from inspiring English sources
Hafnium was separated from zirconium through repeated recrystallization of the double ammonium or potassium fluorides by Valdemar Thal Jantzen and von Hevesey.
The cell extracts were subjected to double-ammonium sulfate fractionation (35 and 75% saturation) and the supernatant from the second precipitation was loaded onto a phosphocellulose (P-11) column.
To investigate the effect of divalency on the micelle properties, we synthesized divalent cationic surfactants composed of fluorocarbons and double quaternary ammonium groups N,N-dimethyl-N-[2(N′-trimethylammonium)ethyl]-1- 3-perfluoroalkyl-2-hydroxypropyl) ammonium bromidethyl]-1- 3-perfluoroalkyl-2-hydroxypropyls thethyl]-1- 3-perfluoroalkyl-2-hydroxypropylon chain].
The double quaternary ammonium groups are continuously combined by the ethylene spacer in the surfactant head group, which clearly distinguishes the molecular design of the surfactant from those of the other typical divalent surfactants, bolaform and gemini types.
It is worth noting that the ICDD pattern described as '(NH4)2CO3·H2O' with peak positions tabulated by Hanawalt et al. (1938 ▸; pattern no. 31), which was presumably measured at room temperature, was suggested to be a double salt of ammonium carbamate and ammonium bicarbonate by Sclar & Carrison (1963 ▸).
Well connected anatase TiO2 nanocrystals were synthesized by one-step thermal decomposition of the double salt (NH4 2TiO SO4 2 (ammonium titanyl sulfate, ATS) at 700 °C for 2 h, and the fine tuning on aggregate sizes was achieved by adjusting the heating rate.
Several rare earth metals, including lutetium, are separated as a double salt with ammonium nitrate by crystallization.
These nutrients were applied as granular limestone ammonium nitrate, double superphosphate and potassium chloride respectively (Germishuizen 1979).
Double or triple quaternary ammonium head groups were designed to improve the solubility of supralong alkyl chain surfactants.
The top soil of urea-BC granules contained almost double the amount of ammonium than that of the soil treated with straight urea.
To darken the staining reaction (in double labeling), 0.4% ammonium nickel sulfate (Fluka) was added.
