| A major national supplier announced it would stop selling ammonium nitrate as its easy accessibility questioned local safety. |
| Glycinebetaine is a quaternary ammonium compound that occurs naturally in a wide variety of plants, animals and microorganisms. |
| Studies of multidrug-resistant proteins have demonstrated two types of residues involved in binding to quaternary ammonium compounds. |
| Last month more than 1,300 kilograms of ammonium nitrate were stolen in a raid on a quarry. |
| The addition of ammonium nitrate to dynamite further decreased the chances of accidental explosions. |
| Then ammonium acetate solution was added to replace the adsorbed sodium with ammonium ions. |
