引用本文:何青青,窦艳艳,徐荣,唐佳婷.在线蒸馏-无人值守连续流动分析法测定污水中氨氮[J].环境监控与预警,2016,8(3):18-20
HE Qing qing, DOU Yan yan, XU Rong, TANG Jia ting.Determination of Ammonia Nitrogen in Wastewater by Continuous Flow Analysis with Online Distillation and Unattended System[J].Environmental Monitoring and Forewarning,2016,8(3):18-20
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在线蒸馏-无人值守连续流动分析法测定污水中氨氮
何青青,窦艳艳,徐荣,唐佳婷
南京市环境监测中心站,江苏 南京 210013
摘要:
采用在线蒸馏-无人值守连续流动分析法对污水中氨氮进行检测,方法在0.00~10.0 mg/L范围内线性良好,检出限为0.014 mg/L,实际样品测定的相对标准偏差为1.24%~4.15%,加标回收率为93.0%~108%,精密度和准确度均能满足污水中氨氮的测定要求。
关键词:  氨氮  连续流动分析  在线蒸馏  无人值守
DOI:
分类号:X832;O657.32
基金项目:
Determination of Ammonia Nitrogen in Wastewater by Continuous Flow Analysis with Online Distillation and Unattended System
HE Qingqing, DOU Yanyan, XU Rong, TANG Jiating
Nanjing Environmental Monitoring Center, Nanjing, Jiangsu 210013, China
Abstract:
Ammonia nitrogen in wastewater was determined by continuous flow analysis(CFA)with online distillation and unattended system. This method showed good linearity in the range of 0.00 to 10.0 mg/L, and the detection limit was 0.014mg/L. The relative standard deviations (RSD) of parallel samples were between 1.24% and 4.15%. The recovery rates were between 93.0% and 108%. The precision and accuracy of this method fulfilled the requirement for the determination of ammonia nitrogen in wastewater.
Key words:  Ammonia nitrogen  Continuous flow analysis  Online distillation  Unattended system