1. The nitrification of the ammonium ion, however, results in the formation of an acid residue.

2. The elevation of ammonium ion content in the liposomes results in higher encapsulation efficiency of brucine-containing in compound SPC and HSPC liposomes.

3. Experiments on adsorption of ammonium ion to fibers were carried out by two methods.

4. Under favorable conditions the ammonium ion is converted to nitrate.

5. Retention behavior of alkali metals,(Sentence dictionary) ammonium ion and alkyl amines on a sulfonic cation-exchange resin column with organic acid and inorganic acid as eluent was studied.

6. After washing the resin with ammonia free water, sodium chloride is used to elute the ammonium ion from the resin.

7. XRD analysis showed that better intercalation effect could be obtained by adopting ammonium ion with longer molecule length, solvent method and high density polyethylene.

8. X-ray powder diffraction(XRD) has been used to study the orientation of alkyl quaternary ammonium ion in the interlayer of products.

9. In addition, the oxidation of KIO 3, the enhancement of ammonium ion, the function of mercury electrode and the influence of cystine concentration were discussed.

10. A new method to determine the concentration of ammonia-nitrogen by ammonium ion selective electrode has been introduced in this paper.

11. It indicated that the increase in the phase temperature of the polymers was most likely due to the increase in the content of the ammonium ion of the polymers.