摘要
CO一直是定电位电解法测定固定污染源排气中SO_2的一个很大的干扰因素,在2017年11月28日发布的《固定污染源废气二氧化硫的测定定电位电解法》(HJ57-2017)中更是明确规定SO_2测定仪初次使用前应开展CO干扰试验,但CO对SO_2的测定过程的干扰程度仍未明确指出。本文采用定电位电解法与抗一氧化碳干扰的自动滴定-碘量法[1]进行比对的方式,测定多种浓度的SO_2标气、CO标气及上述两种气体的混合标气,从定量方向探讨CO对定电位电解法测定固定污染源中SO_2的干扰。
Carbon monoxide has always been a great interference factor for the determination of sulfur dioxide in the exhaust of fixed pollution sources by the constant potential electrolysis. In November 28, 2017, the determination of sulfur dioxide in fixed pollution source（HJ57-2017） was more clearly defined before the first use of the sulfur dioxide analyzer. Carbon monoxide interference test has been carried out, but the interference degree of carbon monoxide on the determination process of sulfur dioxide has not been clearly pointed out. At the same time, we use the method of constant potential electrolysis and auto titration-iodimetric method, [1], to determine a variety of concentration of sulfur dioxide standard gas, carbon monoxide standard gas and the mixed standard gas of the above two gases. From the quantitative direction, we discuss two of carbon monoxide in fixed potential electrolysis method for determination of fixed pollution sources. The interference of sulfur oxide.
作者
温中力
Wen Zhongli(Zhaoqing environmental protection monitoring station （Zhaoqing Institute of Environmental Science）, Zhaoqing Guangdong 526040,China)
出处
《环境与发展》
2018年第6期113-114,共2页
Environment & Development
关键词
二氧化硫
一氧化碳
干扰
定量
Sulfur dioxide
Carbon monoxide
Interference
Quantification
