摘要
采用闭管回流-分光光度法测定水样的化学需氧量，研究了测试条件对测定结果的影响，结果表明最佳消解解温度为150℃，最佳消解时间为120min。与标准方法比较，该方法的准确度高，标准偏差在0％-2．0％，可用于环境监测中的水体COD分析。
The closed reflux - spectrophotometric method was used to determine COD. The influences of testing conditions on results were studied. The results show that the best reflux temperature is 150 ℃ , digesting time is 120 min. Comparing with the standard method, the standard deviation of this method is between 0% and 2.0%. The method has good accuracy and can be used to determine COD in polluted water for environmental monitoring.
出处
《辽宁化工》
CAS
2009年第6期364-366,369,共4页
Liaoning Chemical Industry
