The environmental samples of a certain volume or time are collected according to the sampling requirements of TSP, PM10, natural dust and dust storms in the atmosphere. A quarter of the filter membrane samples collected are accurately cut into plastic bottles,adding 20mL deionized water  ,then volumed to 50mL after beening  extracted  in the ultrasonic cleaner and filtered by a 0.45μm microporous filter membrane. After all this,the sample can be injected for analysis. Using CIC-D120 ion chromatograph, SH-AC-3 anion  column,  3.6 mM Na₂CO₃+4.5 mM NaHCO₃  eluent and bipolar pulse conductance method,under the recommended chromatographic conditions, the chromatogram is as follows.

      Using CIC-D120 ion chromatograph, SH-CC-3 cation column, 5.5 mM MSA eluent and  bipolar pulse conductance method,under the recommended chromatographic conditions, the chromatogram is as follows.