基于紫外分光光度法的水质总氮测定中的影响因素研究  

Research on influencing factors in determination of total nitrogen in water quality based on ultraviolet spectrophotometry

作　　者：杨宏娟 赵羽 穆旭东 Yang Hongjuan;Zhao Yu;Mu Xudong(Yinchuan China Railway Water Group Co.,Ltd.,Yinchuan Ningxia 750000,China)

机构地区：[1]银川中铁水务集团有限公司,宁夏银川750000

出　　处：《环境与发展》2020年第11期91-92,共2页Environment & Development

摘　　要：氮是水资源中的一种化学元素,以硝酸盐,亚硝酸盐等形式存在。利用硫酸钾消解法紫外线光谱法测定水中总氮含量。其结果显示,实验器皿、实验用水、过硫酸钾的纯度、碱性溶液的储存时间对空白的吸光度值产生影响。在实验确定的最佳条件下,得出的结果是正确可靠的,将作为总氮检测的技术支持。Nitrogen is a form of chemical element in water,in the form of nitrates and nitrites.Determination of total nitrogen in water by ultraviolet spectrometry with potassium sulfate digestion method.The results showed that the absorbance of the blank was affected by the purity of the experimental vessel,the experimental water,the potassium persulfate and the storage time of the alkaline solution.Under the optimum conditions determined by the experiment,the results obtained are correct and reliable,and will be used as technical support for the determination of total nitrogen.

关 键 词：水质 总氮 测定 影响因素 

分 类 号：X832[环境科学与工程—环境工程]