【摘要】 为研究电化学甲醛快速检测仪测定数据的准确性,就甲醛快速检测仪与乙酰丙酮分光光度法进行现场实测浓度对比,并探讨环境条件(相对湿度,共存干扰物,风速)对快速检测仪测定结果的影响。结果表明:在测试浓度范围内,两种方法无显著性差异;当湿度范围40%~90%时,快速检测仪法相对误差均小于10%,准确度符合要求;当湿度>90%时,快速检测仪法测定值偏高,误差较大;共存干扰物质总挥发性有机物(TVOC)对甲醛浓度测定结果无干扰;不同风速对快速检测仪测定无影响。快速检测仪法可满足甲醛快速检测的要求。更多还原

【Abstract】 To study the data’s accuracy using portable formaldehyde analyzer. Comparative study on the influence of three environmental factors(i.e., relative humidity, interferential substances and wind speed) on the measured values of indoor formaldehyde of three different concentrations by rapid instrumental method and acetyl acetone spectrophotometric method to verify the accuracy of the rapid formaldehyde analyzer. The results shows that: within the analytical concentrations, there exists no significant differences between the two methods; When humidity is between 40 percent and 90 percent, rapid formaldehyde analyzer remains a low relative error of below 10 percent and can meet the requirement of the specification, but the relative error increases when the humidity is above 90%;There is no correlation between interferential substances(TVOC) and formaldehyde and various wind speeds have no impact on the results of rapid instrumental method.更多还原