采用流动注射分析仪总氮通道测定硝酸盐氮的探讨
许丹丹

Discussion on the determination of nitrate nitrogen by total nitrogen channel in flow injection analyzer
Dandan XU
表4 不同类型样品的测定
Table 4 Determination of different types of sample
样品类型地表水地下水废水
测定结果/(mg·L-11.251.170.666
1.251.170.661
1.261.170.664
1.251.160.662
1.251.160.662
1.251.160.661
平均值/(mg·L-11.251.170.663
标准偏差/(mg·L-10.003 50.004 60.001 7
相对标准偏差/%0.280.400.25