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Automatic combustion-ion chromatography (CIC) system is composed of auto-sampler, sample combustion furnace, absorption unit and ion chromatograph (IC). We developed so far 3 kinds of systems. In this paper, some improvements are added in trace organic elements’ system, and considered rapid and simultaneous analysis method for halogens/sulfur in organic compounds. From view point of device, carrier gas is transformed from argon (helium)/oxygen mixed gases to clarified air, so that analysis cost could be significantly reduced. As well as by adjusting combustion and schedule of chromatogram developing time, analysis time for continuous measurement could be shortened drastically. On the analysis side, new standard sample (reagent), NAC-st4: C12H7NO2FClBrIS, has developed which contains 4 halogens and sulfur element. This enables to create calibration curve with 5-element (F, Cl, Br, I, S) by organic calibration method. It indicated more than 0.999 of correlation coefficients (r). This method can achieve high sensitivity, so it can apply both for micro analysis (sample amount: 1.0 to 10mg) and for ultra-micro analysis (sample amount: 0.1 to 1.0mg). Measurements for 5 or 6 samples per an hour has attained and processed within allowable error range of organic element analysis (0.3%).

Rapid and Simultaneous Micro-analysis of Halogens and Sulfur in Organic Compounds by Combustion - Ion Chromatography