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Acta Chimica Sinica ›› 1996, Vol. 54 ›› Issue (8): 813-818. Previous Articles Next Articles
Original Articles
刘善军;沈含熙;冯建兴
发布日期:
LIU SHANJUN;SHEN HANXI;FENG JIANXING
Published:
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A flow injection analysis system based on electrochemical gas sensor is used for the direct determination of sulfur dioxide in the form of gas. The influence of connective modes of the flow system, gas flow rates and gas pressure in the flow system is discussed in detail. Flow injection analysis (FIA) is compared with continuous flow analysis (CFA) in signal response curves, carrier gas flow rates, and sample volume. The method of FIA has good reproducible with a RSD of 0.7% (n=12, 2890×10^-^6mol/mol SO2) and rapid analysis of 50 samples/h, while the steady state can be achieved and the signal sensitivity is higher in CFA.
Key words: GAS ANALYSIS, SULFUR DIOXIDE, SENSORS, FLOW INJECTION ANALYSIS, CONTINUOUS FLOW ANALYSIS
CLC Number:
O646
LIU SHANJUN;SHEN HANXI;FENG JIANXING. Studies on gas flow injection and continuous flow analysis system- electrochemical determination of sulfur dioxide gas[J]. Acta Chimica Sinica, 1996, 54(8): 813-818.
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