紫外分光光度法测定NO3--N过程中S2O32-的干扰与消除
付昆明,黄少伟,杨帆

Interference and elimination of thiosulfate ion in the measurement of nitrate nitrogen by ultraviolet spectrophotometry
Kunming FU,Shaowei HUANG,Fan YANG
表5 过硫酸钾掩蔽下S2O32-对NO3--N测定的影响
Table 5 Effect of thiosulfate on NO3--N measurement under potassium persulfate masking
A/(mg·L-1B/(mg·L-1C/gNO3--N /(mg·L-1
第1次第2次第3次
10100017.45017.02918.762
101000.0714.32115.28913.816
101000.1411.14110.45910.435
101000.2810.78810.12510.889
10200026.53426.57325.928
102000.1415.63315.33615.481
102000.2810.99010.84210.939