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流动注射在线UV消解测定环境水体中的总氮研究
引用本文:黄晶,黄莹,凌玲,金虹.流动注射在线UV消解测定环境水体中的总氮研究[J].环境科学与管理,2014(2):91-93.
作者姓名:黄晶  黄莹  凌玲  金虹
作者单位:镇江环境监测中心站,江苏镇江212004
摘    要:采用San++流动分析仪在线UV消解测定环境水体中的总氮,样品浓度在0.00~5.0 mg/L与峰高有良好的线性关系(r=0.999 6)。进行了标准样品考核和实际水样的流动注射法和国标方法的比对分析。实验结果表明:采用流动注射在线消解测定水中TN,其标样测定值均在保证值范围内,相对标准偏差小于3%;两种方法测定实际水样的结果无显著性差异且具有很好的一致性,加标回收实验的回收率在90.0%~97.7%之间,能满足地表水及排放废水中TN监测要求。

关 键 词:流动注射  总氮  精密度  准确度  回收率

Determination of Total Nitrogen in Water Online Digestion by SFA
Huang Jing,Huang Ying,Ling Ling,Jin Hong.Determination of Total Nitrogen in Water Online Digestion by SFA[J].Environmental Science and Management,2014(2):91-93.
Authors:Huang Jing  Huang Ying  Ling Ling  Jin Hong
Institution:(Zhenjiang Environmental Monitoring Station, Zhenjiang, Zhenjiang 212004, China)
Abstract:The determination of total nitrogen in water was performed online digestion by San ++ Flow Injection Analyzer. The results showed that the good linearity in the range from 0. 00 - 5. 0 mg/L with peak height (r = 0.999 6). In the standard sample assessment and comparison of actual water samples, the results showed that the online SFA for determination of total nitrogen (TN) could meet all kinds of needs. The measuring of reference materials is all within the standard values, and the relative standard deviation is less than 3%. The two methods have no significant difference, the recovery of this method was 90. 0% - 97.7%, which satisfies the TN requirements in both surface water and discharge wastewater.
Keywords:flow injection  total nitrogen  precision  accuracy  recovery
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