杜马斯燃烧法测定城市污泥中总氮含量的方法研究  

Determination of Total Nitrogen in Municipal Sludge by Dumas Combustion Method

作　　者：班雁华 罗艳 刘洋 BAN Yan-hua;LUO Yan;LIU Yang(Guangxi Center for Analysis and Test Research,Guangxi Nanning 530022,China)

机构地区：[1]广西分析测试研究中心,广西南宁530022

出　　处：《广州化工》2024年第10期63-65,共3页GuangZhou Chemical Industry

基　　金：广西分析测试研究中心自主科研项目《环境新污染物(全氟化合物)检测技术及应用研究》(No:gxat2022zz02)。

摘　　要：氮含量是城市污泥土地利用的一个重要指标,本文以城市污泥为研究对象,研究了用杜马斯燃烧法测定城市污泥中总氮含量的方法,探讨了杜马斯燃烧法在城市污泥中总氮含量测定应用可行性及优缺点,结果表明了杜马斯燃烧法测定城市污泥中总氮含量的方法操作简单、快捷,适用于城市污泥中总氮含量的测定。检出限为0.030%,试样精密度为2.49%~4.34%,加标回收率为96.2%~104.1%。Nitrogen content is an important indicator for land use of municipal sludge.Taking municipal sludge as the research object,this paper studied the method of determining total nitrogen content in municipal sludge by Dumas combustion method,and discussed the feasibility,The results showed that Dumas combustion method was simple and fast,and was suitable for the determination of total nitrogen in municipal sludge.The detection limit is 0.030%,the precision of the sample is 2.49%~4.34%,and the recovery rate is 96.2%~104.1%.

关 键 词：杜马斯燃烧法 城市污泥 氮 

分 类 号：O613.61[理学—无机化学]