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4 不同臭氧吹脱时长下S2O32-对NO3--N测定的影响
Table 4 Effect of thiosulfate on NO3--N measurement under different ozone stripping times
吹脱时长/minNO3--N/(mg·L-1
第1次第2次第3次
018.20718.63618.610
119.31717.96618.812
219.77117.96618.257
318.66117.77517.652
418.96416.91417.803
519.41816.72316.894
7.517.90415.86215.885
1016.44014.42815.431
1514.87612.89814.371
2014.37113.37614.270
2513.20613.32813.614
3014.06813.28014.169