便携式紫外吸收法与定电位电解法测定烟气中二氧化硫和氮氧化物的结果比对分析  

Comparative Analysis of the Results of Portable Ultraviolet Absorption Method and Constant Potential Electrolysis Method for Determining Sulfur Dioxide and Nitrogen Oxides in Flue Gas

作　　者：曾剑强 Zeng Jianqiang(Guangdong Dongguan Ecological Environment Monitoring Station,Dongguan 523000,China)

机构地区：[1]广东省东莞生态环境监测站,广东东莞523000

出　　处：《广东化工》2023年第20期147-149,共3页Guangdong Chemical Industry

摘　　要：在同样的环境下使用便携式紫外吸收法和定电位电解法同时测定污染源废气中二氧化硫和氮氧化物,分析两者监测比对结果,初步研究两种方法产生误差的原因。结果发现:二氧化硫和氮氧化物标准气体的两种监测方法验证结果的误差均不大于0.5%,符合标准限值要求,固定污染源中二氧化硫和氮氧物两种方法的实验结果存在一定的误差,以二氧化硫误差较为明显;受烟气高湿度的影响,紫外吸收法对二氧化硫和氮氧化物监测结果均大于定电位电解法的监测结果;对使用静电式除尘装置废气中二氧化硫和氮氧化物两种方法的监测结果产生误差值为最高。Using portable ultraviolet absorption method and constant potential electrolysis method to simultaneously determine sulfur dioxide and nitrogen oxides in waste gas from pollution sources under the same environment,analyzing the monitoring comparison results of the two methods,and preliminarily studying the reasons for the errors generated by the two methods.The results showed that the error in the validation results of the two monitoring methods for sulfur dioxide and nitrogen oxide standard gases was not more than 0.5%,which met the standard limit requirements.There were certain errors in the experimental results of the two methods for sulfur dioxide and nitrogen oxide in fixed pollution sources,with sulfur dioxide having the most significant error;Due to the high humidity of flue gas,the monitoring results of sulfur dioxide and nitrogen oxides using UV absorption method are greater than those using constant potential electrolysis method;The monitoring results of sulfur dioxide and nitrogen oxides in exhaust gas using electrostatic dust removal devices have the highest error value.

关 键 词：便携式紫外吸收法 定电位电解法 二氧化硫 氮氧化物 静电 

分 类 号：X830.2[环境科学与工程—环境工程]