| The studies of application of low-pressure ion chromatography with chemiluminescence detection were carried out in this work. It has been widely applied in environmental analysis, industrial analysis and pharmaceutical analysis, and achieved great progress.The first part of this paper is a review concerning application of low-pressure ion chromatography and post-column chemiluminescence detection respectively. Some research reports were given in the other part. Some kind of ions were separated and determined by low-pressure ion chromatography with chemiluminescence detection, and therefore good results were obtained.1. Determination of Iodine in Food by Low-Pressure Ion Chromatography with Chemiluminescence DetectionThe separation and determination of iodine sea food samples were investigated by low pressure-Ion chromatography combined with chemiluminescence. The separation and detection conditions were studied. NaNO3 was used as eluent and luminol-K2CrO7-I-system as the chemiluminescence reagent. The linear range for the iodine determination is 2.0×10-6～1.5×10-5g/mL.The detection limit is 5.6×10-7g/mL (3σ), and the relative standard derivation is 4.2%(6.0×10-6g/mL).2. Determination of Nitrite in water by Low-Pressure Ion Chromatography with Chemiluminescence DetectionThe separation and determination of nitrite in water samples were investigated by low pressure-ion chromatography combined with chemiluminescence. The separation and detection conditions were optimized. Na2CO3 was used as eluent and luminol-KIO4-NO2-system as the chemiluminescence reagent. The linear range for the determination of nitrite is 8.0×10-7～1.0×10-5g/mL,The detection limit is2.4×10-7g/mL (3σ), the relative standard derivation for4.0×10-6g/mL NO2-is 3.1%.3. Determination of Iodine in sea Food by Low-Pressure Ion Chromatography with Chemiluminescence DetectionI-is separated by low-press ion chromatography, and reacts with KIO4- The product reacts further with luminol to produce chemiluminescence, NaNO3 was used as eluent. Under the best conditions, the linear is 1.0×10-6-1.0×10-5g/ml and the detection limit is 3.3×10-7g/ml, the relative standard derivation for 3.8%...
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