盐酸萘乙二胺分光光度法测定氮氧化物样品过饱和与三氧化铬污染比较研究

Compared ethylenediamine dihydrochloride spectrophotometric method determination of nitrogen oxides samples oversaturation and chromium trioxide pollution condition

依据标准方法采集氮氧化物样品,进行吸收液穿透及三氧化铬污染样品状态比较实验。实验结果表明氮氧化物吸收液在样品采集时,及时判断后管变色,并停止采样可以有效避免第一支吸收管采穿变黄情况的发生;吸收液被穿透时呈现亮黄色,与被三氧化铬污染的黄棕色不同,根据颜色可以有效判断检测结果异常的原因,并及时采取相应措施避免污染,保证结果的准确性。

Based on the standard method gathering nitrogen oxide compound sample,comparison experiment of sample state of penetrating and chromium trioxide contamination,breakthrough experiment.The experimental result indicated nitrogen oxide compound absorption solution when gathering sample,after the prompt judgment the tube color deterioration,can effectively avoid the first absorption tube-wearing yellow;the absorption solution penetrates when is presented the light yellow,unlike yellow brown contaminated by chromium trioxide,according to the color can effectively determine the result of the Exception,and to take the appropriate measures to avoid pollution,ensure the accuracy of the results.