摘要
建立了采用TOC/TN测定仪燃烧氧化电化学法测定水中总氮的分析方法,优化了仪器最佳测定参数。方法检出限≤0.05mg·L^(-1),线性范围宽0～200mg·L^(-1),实际样品相对标准偏差<4%,加标回收率96.0%～103.0%。该方法无需另加试剂和前处理、快速简便、无干扰,适用于环境监测中各种水质中总氮的测定。
An analytical method for the determination of total nitrogen in water by burning oxidation electrochemical method using TOC/TN analyzerwas established,and the optimal measurement parameters of the instrument were optimized.The detection limit of the method was ≤0.05mg·L^-1,the linear range was 0-200mg·L^-1,the relative standard deviation of the actual sample were <4%,and the recovery rate were 96.0%-103.0%.The method does not require additional reagents and pretreatment,quick and easy,no interference,and was suitable for the determination of total nitrogen in various water quality in environmental monitoring.
作者
徐义邦
张吴
陈芬
XU Yi-bang;ZHANG Wu;CHEN Fen(Nanchang Environmental Monitoring Station,Nanchang 330038,China)
出处
《化学工程师》
CAS
2018年第12期26-28,共3页
Chemical Engineer
关键词
总氮
TOC/TN测定仪
燃烧氧化电化学法
紫外光度法
total nitrogen
TOC/TN analyzer,burning oxidation electrochemical method
ultraviolet spectrophotometry
