摘要
The simultaneous determination of total nitrogen (TN) and total phosphorus (TP) in seawater by micro-autoana- lyzer after persulphate oxidation was made. The relative error is less than 3. 8 % when TN is higher than 17. 7μmol/L and less than 5. 8 % when TP is higher than 0. 38 μmol/L. The recovery percentage of TN and TP are 96 %-123 % and 94 %-113 %. During iced conservation after persulphate oxidation, the concentrations of TN and TP did not change with time.
The simultaneous determination of total nitrogen (TN) and total phosphorus (TP) in seawater by micro-autoana- lyzer after persulphate oxidation was made. The relative error is less than 3. 8 % when TN is higher than 17. 7μmol/L and less than 5. 8 % when TP is higher than 0. 38 μmol/L. The recovery percentage of TN and TP are 96 %-123 % and 94 %-113 %. During iced conservation after persulphate oxidation, the concentrations of TN and TP did not change with time.
出处
《海洋科学》
CAS
CSCD
北大核心
1999年第5期64-66,共3页
Marine Sciences
基金
国家重点基金!39630060号
国家自然科学基金!39625008号
国家重点科技资助项目(攻关)计划!96-922-02一
关键词
总氮
总磷
海水
同时测定
Total nitrogen, Total phosphorus, Seawater, Simultaneous determination
