Determination of 8 kinds of anion in waste gas from stationary source by ion chromatography
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
