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3 不同Ba2+投加量下S2O32-对NO3--N测定的影响
Table 3 Effect of thiosulfate on NO3--N measurement under different dosages of Ba2+
Ba2+/（g·L-1）NO3--N/（mg·L-1）
第1次第2次第3次
018.18618.29117.631
116.75317.96616.763
217.53018.10017.712
315.07717.88014.351
415.60217.23015.885
517.31817.25815.663
616.84417.36415.703