| 污水总氮测试中高空白值成因分析及其控制 |
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| 引用本文： | 路文芳,王洪禧,张立勇,刘俊良.污水总氮测试中高空白值成因分析及其控制[J].环境科学与技术,2009,32(5). |
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| 作者姓名： | 路文芳 王洪禧 张立勇 刘俊良 |
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| 作者单位： | 1. 河北农业大学城乡建设学院,河北,保定,071001
2. 武汉大学土木建筑工程学院,湖北,武汉,430072 |
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| 摘 要： | 采用碱性过硫酸钾消解-紫外分光光度法进行污水总氮测定过程中,时常会出现空白值偏高的现象。试验研究了其主要影响因素及其高空白值成因;并采取多波长法设定程序进行数据直读,降低了试验误差,简化了操作过程,实现了批量测定。
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| 关 键 词： | 污水 总氮 测定 误差 |
Formation Analysis of High Blank Value in Sewage TN Determination and Its Control |
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| LU Wen-fang,WANG Hong-xi,ZHANG Li-yong,LIU Jun-liang.Formation Analysis of High Blank Value in Sewage TN Determination and Its Control[J].Environmental Science and Technology,2009,32(5). |
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| Authors: | LU Wen-fang WANG Hong-xi ZHANG Li-yong LIU Jun-liang |
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| Abstract: | The phenomenon of high blank value often appears in the process of total nitrogen(TN) determination with alkaline potassium persulfate digestion-UV spectrophotometric method.Major influencing factors as well as the cause of formation of high blank value were analyzed.By programming on the basis of multiwavelength method,data can be read directly,which can decrease the error,simplify the operating process and make the mass determination. |
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| Keywords: | sewage total nitrogen determination inaccuracy |
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