摘要
APT废水中氨氮主要以铵盐的形式存在，采用蒸馏滴定法测定其氨氮的总量，方法以20g／L硼酸溶液为吸收液，吸收蒸馏出的NH3，用甲基红——亚甲基蓝为指示剂、硫酸标准溶液滴定。方法的标准平均偏差为1．9％，回收率为99％-105％。
In APT wasting water,tile ammonia-nitrogen exists usually as aminium salt. The total ammonia-nitrogen in APT wasting water was determined by the distillation-titration method in this paper. The results show that the method is effective and evident. Additionally, the results of the study provide a detailed characterization of the types and concentration of reagent in determination of ammonia-nitrogen. The absorbent that absorbs the ammonia is the solution of 20 g/L boric acid ; the indicator is Methyl red and Methylene blue ; the titration solution is the standard solution of vitriol. It indicates that the standard average deviation is 1.9% , and the ratio of recycle is 99% - 105%.
出处
《江西冶金》
2007年第3期36-38,共3页
Jiangxi Metallurgy
关键词
蒸馏
硼酸
硫酸铵
氢氧化钠
distillation
boric acid
ammonium sulfate
sodium hydroxide
