分析与监测

降低总氮测定中浑浊度干扰的经验

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  • 1. 深圳市水质检测中心, 广东 深圳 518036;
    2. 深圳大学师范学院, 广东 深圳 518001
曹蕾(1972- ),1997年毕业于华中师范大学化学系,硕士,工程师.电话:0755-83071704,13662585425

收稿日期: 2004-04-07

  网络出版日期: 2010-10-01

Some experiences in determining total nitrogen in water

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  • 1. Shenzhen Water Quality Centre, Shenzhen 518036, China;
    2. Normal College of Shenzhen University, Shenzhen 518001, China

Received date: 2004-04-07

  Online published: 2010-10-01

摘要

根据GB11894—1989《水和废水标准检验法》中的检测方法检测水源水中的总氮时发现,当水样的浑浊度高时,水样在波长275nm处的干扰值有明显增高现象。通过实验对比显示,消解后设法降低水样的浑浊度,会使空白值下降。

关键词: 总氮; 干扰值; 浑浊度

本文引用格式

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

Abstract

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.

参考文献

[1] 国家环保局<水和废水监测分析方法>编委会.水和废水监测分析方法[M].北京:中国环境科学出版社,1989.272-274,278-280
[2] 国家环保局<水和废水监测分析方法指南>编委会.水和废水标准检验法[M].北京:中国环境科学出版社,1990.160-161

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