By application of infrared NDIR analysis technique and ultraviolet analysis technique in flue gas SO2 and NO, three technical solutions are formed, which can achieve real-time online monitoring of the concentration.%通过对红外NDIR分析技术和紫外分析技术在烟气SO2和NO中的应用研究，形成了三种技术方案，可以实现浓度实时在线监测。
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