连续流动分析法同时测定地表水中的总氮和氨氮  

Simultaneous Determination of Total Nitrogen and Ammonia Nitrogen in Surface Water Using Continuous Flow Analysis Method

作　　者：陈蓉 CHEN Rong

机构地区：[1]泉州市水务水质检测有限公司,福建泉州362000

出　　处：《化工设计通讯》2024年第6期86-88,92,共4页Chemical Engineering Design Communications

摘　　要：结合地表水特性,为充分了解连续流动分析法在其总氮和氨氮测定中的实用价值。本研究通过采集地表水样本,运用连续流动分析法和手工法进行测定,统计两种方法的检测结果。连续流动分析法检测总氮、氨氮的线性范围内的相关系数(r)分别为0.9998、0.9997,检出限均为0.04 mg/L。检出精密度总氮、氨氮相对标准偏差分别在1.11%~2.38%、0.76%~1.28%范围内。以手工方法为对照,连续流动分析法的中总氮、氨氮样品检出准确度误差更低,且准确度与要求相符合。证实在地表水检测中,连续流动分析法不仅操作更加简单方便快捷,且有着更高的精密度和更好的准确度,可以更好满足实验室质量控制要求,可应用于地表水大批量样品的测定。Based on the characteristics of surface water,in order to fully understand the practical value of continuous fl ow analysis method in the determination of total nitrogen and ammonia nitrogen.This study collected surface water samples and used continuous flow analysis and manual methods for measurement,and statistically analyzed the detection results of the two methods.The correlation coeffi cients(r)within the linear range of continuous fl ow analysis for detecting total nitrogen and ammonia nitrogen are 0.9998 and 0.9997,respectively,with detection limits of 0.04 mg/L.The relative standard deviations of total nitrogen and ammonia nitrogen for precision detection are within the range of 1.11%-2.38%and 0.76%-1.28%,respectively.Compared with manual methods,the accuracy error of the continuous flow analysis method for detecting total nitrogen and ammonia nitrogen samples is lower,and the accuracy meets the requirements.It has been confi rmed that in surface water detection,the continuous fl ow analysis method is not only simpler,more convenient,and faster to operate,but also has higher precision and accuracy,which can better meet laboratory quality control requirements and can be applied to the determination of large quantities of surface water samples.

关 键 词：连续流动分析法 地表水 总氮 氨氮 

分 类 号：X132[环境科学与工程—环境科学]