摘要
本课题同时消解总磷和总氮,在所有试剂和条件与消化总氮的条件相同的情况下,节省一半的时间和试剂。实验中采用正交试验方案,对消解时间、消解温度、K_2S_2O_8用量、NaOH用量等实验影响因素进行确定(消解温度=120℃,消解时间=20min,K_2S_2O_8(5%)=6mL,NaOH(8%)=3mL)。根据确定的实验因素得出本方法的测定范围,并对试样进行测定与标准法对比。结果表明:该方法的本身的精密度及准确度均能达到要求,对水样的测定与标准方法对比具有很高的准确度。
This paper used the COD instrument simultaneously to digest the total phosphorus （TP）and the total nitrogen（TN） by the same reagents and the condition the condition same situation to save half of the time and the reagent.The orthogonal experiment plan was used to determine the factors of the digested time and temperature, the K2S208 amount, the NaOH amount（the digested temperature=120℃, time=20min, K2S208 （5%） =6mL and NaOH（8%）=3mL）. And the best range of determination is confirmed. The compariton of the method and the national standard is done. The results show that the precision and accuracy of the method are well and can meet the quality control requirement.
出处
《全面腐蚀控制》
2016年第5期19-21,共3页
Total Corrosion Control
基金
国家质检总局科技计划项目:基于膜技术的高分子纳米磁性无损检测材料的制备方法研究
广东省普通高校青年创新人才项目:基于膜技术的纳米磁性助凝剂的制备及应用研究
关键词
联合测定
总磷
总氮
united determination
total phosphorus
total nitrogen
