关于紫外法测定水质总氮影响因素的研究  

Research on the Factors Influencing the Determination of Total Nitrogen in Water Quality by UV Spectrophotometric Method

作　　者：贺欣 范丹丹 He Xin;Fan Dandan(Shanghai Wai Gao Qiao Free Trade Zone Environmental Protection Service Co.,Ltd.,Shanghai 200131;Shanghai Drainage Management Office,Shanghai 200003,China)

机构地区：[1]上海外高桥保税区环保服务有限公司,上海200131 [2]上海市排水管理处,上海200003

出　　处：《广东化工》2020年第8期158-159,162,共3页Guangdong Chemical Industry

摘　　要：从实验用水、试剂纯度及配置、实验器皿和仪器的检查和清洁、消解时间、消解后冷却和混匀、仪器测量模式方面对碱性过硫酸钾消解紫外法测定总氮的影响因素进行分析,并用2个有证标准样品对相关影响因素进行佐证,提出注意事项和改进建议。The influencing factors of the determination of total nitrogen by UV spectrophotometric method with alkaline potassium persulfate were analyzed from the aspects of experimental water,purity and configuration of reagents,inspection and cleaning of experimental vessels and instruments,digestion time,cooling and mixing after digestion,and measurement mode of instruments.The relevant influencing factors were confirmed by two certified standard samples,and the precautions and improvement suggestions were put forward.

关 键 词：碱性过硫酸钾 紫外法 总氮 影响因素 标准样品 

分 类 号：TQ[化学工程]