水泥厂窑尾氟化物测定方法研究

Research on the Determination Method of Fluorine Compound of Kiln Emission

采用《HJ/T67-2001大气固定污染源氟化物的测定离子选择电极法》,分别测定了3个水泥厂窑尾的气态氟化物和尘氟浓度,实验结果显示气态氟化物浓度与氟化物浓度差别较小,通过采用总体均值的t检验方法,发现水泥厂窑尾气态氟浓度与氟化物浓度无显著性差异,因此在水泥厂窑尾氟化物的监测过程中,可直接测定气态氟的浓度表示氟化物的浓度,从而可以简化水泥厂窑尾测定氟化物的过程。

The concentrations of gaseous fluoride and particulate fluoride of kiln emission from three cement plants were tested separately by the method of stationary source emission-determination of fluoride-Ion selective electrode. The trial results were checked by t test of mean comparison. The test showed that their concentrations were little differences. There were no significant differences between the two groups. Therefore the concentration of gaseous fluorides could substitute that of fluorine compound in the process of monitoring kiln emission. It simplified the processes of fluorine compound determination.