摘要
采用电热干燥箱加热和重铬酸钾法中的变阻电炉回流加热氧化方法,对同一标样和同一水样进行化学需氧量测定,两种方法测得的结果无显著差异,即用电热鼓风干燥箱加热代替标准方法回流加热氧化测定水质化学需氧量,方法可行。替代方法提高了工作效率,也降低了分析成本。
The same standard samples and same water samples are detected using potassium dichromate method with two different heating ways of electric heating loft drier and reflux heating.The results by two heating ways haven＇t obvious difference.So the electric heating loft drier can replace the typical heating way with low cost.
出处
《环境科学导刊》
2010年第A01期92-93,共2页
Environmental Science Survey
关键词
化学需氧量
重铬酸钾法
加热氧化
方法改进
chemical oxygen demand
potassium dichromate method
heating and oxidation
method improvement
