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用对硝基苯胺-N,N-二甲基苯胺光度法测定痕量亚硝酸盐,比重氮偶合比色法灵敏度高(ε=5.29×10~4),选择性好,试剂溶液稳定。在0—11μg/50ml范围内服从比尔定律。
Nitrobenzene - N, N - dimethylaniline spectrophotometric determination of trace nitrite, specific gravity nitrogen coupling colorimetric sensitivity (ε = 5.29 × 10 ~ 4), good selectivity, reagent solution stability. Beer’s law is obeyed in the range of 0-11 μg / 50ml.