本文
No.3（2000）11.Developement of automatic continuous analytical apparatus of sulfur oxides, nitrogen oxides and hydrogen chloride in flue gas by ion chromatograph
Makoto NONOMURA, Toshiyuki HOBO
An automatic continuous collection and analytical apparatus has been developed for the determination of sulfur oxides, nitrogen oxides and hydrogen chloride in flue gas by ion chromatography (IC). The sulfur dioxide, nitrogen dioxide and hydrogen chloride in sample gas were collected in a first hollow cylindrical absorption bottle with a frittered glass bubbler containing 5% triethanolamine (TEA) absorbing solution and was then determined by IC. Nitrogen monoxide was also collected in a second absorption bottle containing TEA solution after oxidation to nitrogen dioxide by UV irradiation. A designed apparatus was operated automatically for sampling and determination. The time required for one cycle was about 55 minutes. The detection limits of SO2, NO2 and HCl were 0.3 ppmv, 0.1 ppmv and 0.1 ppmv (all v/v) with a 5-litre gas volume, respectively. The interference of carbonate ion was eliminated by using a separation column of IonPac AS7 and an anion self-regeneration suppressor.
Keywords
Ion chromatography, flue gas analysis, sulfur oxides, nitrogen oxides, hydrogen chloride
