The anion samples in waste gas from stationary sources were collected by alkaline absorption solution,and filtered by 0.22µm membrane,then F-、BrO3-、Cl-、NO2、Br-、NO3-、PO43-、SO42-were determined by conductivity detector with SUPP5 anion exchange column for 3.2mmol·L-1 Na2CO3 and 1.0 mmol·L-1 NaHCO3 solution as elution.The results showed that the calibration curves had a good linearity in the concentration range of 0.050～0.500mg·L-1,and the detection limits were 0.002～0.029mg·L-1,the determination limits were 0.008～0.116 mg·L-1;Recovery experiments were made at 3 concentration levels,the recovery was 80.8％～1 17％,RSD was 0.2％～9.8％,which indicates that the method has high precision and accuracy;This method was used to detect the waste gas from coal fired units and factory boundary in power plants,the results showed that,F-,Cl-,NO2,Br-,NO3-and SO42-were detected in waste gas from coal fired units,the concentration was 0.039～0.686mg·m-3,while F-,Cl-,Br-,NO3-and SO42-were detected in waste gas from factory boundary,The concentration was 0.026～1.090mg·m-3.
ion chromatographystationary sourceswaste gasanion
NETL
NSTL
万方数据
