降低总氮测定中浑浊度干扰的经验
收稿日期: 2004-04-07
网络出版日期: 2010-10-01
Some experiences in determining total nitrogen in water
Received date: 2004-04-07
Online published: 2010-10-01
曹蕾, 王芳, 薛建华, 夏红卫 . 降低总氮测定中浑浊度干扰的经验[J]. 工业水处理, 2004 , 24(10) : 51 -52 . DOI: 10.11894/1005-829x.2004.24(10).51
When the total nitrogen in source water is examined, it is found the water samples with high turbidity give strong disturbance at 275 nm. Through comparing the four ways of the samples treatment,we found one of them is the most effective to reduce the disturbance, that is letting the samples which have been persulfated stand for 15 min,then centrifuging them at the rate of 2 000 r/min to reduce the disturbance as well as turbidity.
Key words: total nitrogen; disturbance; turbidity
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