[Study on the analysis of NO2-, Br- and NO3- by ion chromatography in the presence of high mass concentration of chloride].
The effects of high mass concentration chloride on the determination of NO2-, Br- and NO3- were studied on three different analytical columns by ion chromatography. The variations of retention behavior of these anions were caused by self-elution effect and on-column eluent change in the presence of high concentration chloride. When their peaks overlapped with chloride, the deviations of the quantity of weak acid anions were caused by anion-proton interactions within the suppressor. However, the strong acid anions and the other weak acid anions, not overlapped by chloride, were not affected. The linear ranges of these anions in different concentrations of chloride and the maximum chloride concentration allowed to be measured by peak height quantitative method were examined.
Lü
H T
HT
Department of Basic Courses, Laiyang Agricultural College, Laiyang 265200, China. htlu@lyac.edu.cn
Deng
R
R
Mou
S F
SF
D000838:Anions / Q000032:analysis; D001965:Bromides / Q000032:analysis*; D002712:Chlorides; D002852:Chromatography, Ion Exchange / Q000295:instrumentation* / Q000379:methods; D009566:Nitrates / Q000032:analysis*; D009573:Nitrites / Q000032:analysis*
D000838:Anions; D001965:Bromides; D002712:Chlorides; D009566:Nitrates; D009573:Nitrites