【摘要】 目的探讨电化学法测定居住区大气中一氧化碳浓度的可行性。方法建立居住区大气中一氧化碳浓度检测的电化学法,进行准确度、精密度、干扰试验及现场试验测定。结果用主动式及被动式电化学仪器测定居住区大气中一氧化碳浓度,其相对误差均<5%,相对标准偏差均<5%;常规浓度的二氧化硫、二氧化氮和丁烯、丙酮及乙醇干扰气体经活性炭和碱性过滤器过滤后,对测定的干扰率均<2%;现场试验测定的相对误差均<5%。结论该电化学方法适合于居住区大气中一氧化碳浓度的测定。更多还原

【Abstract】 Objective To discuss the availability of electrochemical determination of carbon monoxide in atmosphere of residential zones.Methods To establish the electrochemical detection method of carbon monoxide levels of atmosphere in residential zones,and determine its accuracy,precision,intervention tests and on-spot detection.Results Active and passive electrochemical instruments were used to determine carbon monoxide levels,the relative errors were less than 5%,and relative standard deviation were less than 5%;after filtering with acitiviated carbon and Alkaline filters,the intervention rates were all less than 2% in the determination of common levels of the following intervening gases,such as sulfur dioxides,nitrogen oxides,crotoxyphos,acetones and ethanols.The relative errors from on-spot tests were all less than 5%.Conclusion Electrochemical determination can be applied to measure the carbon monoxide levels in residential zone atmosphere.更多还原