流动注射分析法分析土壤硝态氮实验

Determination of NO_3^-N in Soil with Flow Injection Analysis

采用QuikChem FIA+8000series型流动注射分析仪分析了600个土壤样品的NO3--N。流动注射分析法分析土壤样品,分析速度可达72 samples/h,与传统方法相比,极大地提高了分析速度,同时减少了试剂和试样用量;回收率为95.06%~104.75%,RSD<1%,相关系数达0.999 9。

NO3-N in 600 soil samples was analyzed with Flow Injection Analysis（QuikChem FIA ＋ 8000series）.Determination of soil NO3-N with FIA increased analysis rate,decreased regents and samples usage significantly,compared with traditional methods.Its recovery was 95.06%～104.75%,RSD〈1%,and correlation reached 0.999 9.Its accuracy,precision,selectivity and sensitivity was high,and its operation was convenient.