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2 不同盐酸投加量下S2O32-对NO3--N测定的影响
Table 2 Effect of thiosulfate on NO3--N measurement under different dosages of hydrochloric acid
盐酸投加量/mLNO3--N/（mg·L-1）
第1次第2次第3次
019.21618.88119.175
0.0519.07418.71319.327
0.118.96318.80918.893
0.217.92418.92818.802
0.516.51119.02417.712
117.30818.33117.348
214.81518.37915.794
316.60217.15915.582
416.32917.47016.591
515.84417.08815.996