The conversion of nitrite is slowed down as contrasted to the conversion of ammoniumions to nitrite.
与铵离子转变为亚硝酸相比， 亚硝酸转变为硝酸是很缓慢的。
2
Pig farm wastewater in high concentration of ammonia , ammoniumions and are free to the state of ammonia exist.
猪场废水中的氨氮浓度高，大多以铵离子和游离氨的状态存在。
3
The said catalyst is prepared through mix shaping of zeolite with alumina to make up carrier, exchanging na ions in zeolite with ammoniumions, and impregnating with Pt.