【摘要】 本文首次研究高浓度盐基体中,大量盐的存在对无机阴离子的保留时间、峰高和峰面积等参数的影响规律,并对其影响机理进行了初步探讨.实验证明,在样品中离子总浓度不超过柱容量的情况下,虽然由于某些离子的浓度过高,使待测离子的保留时间变短,峰形改变,但用峰面积和标准加入外推法计算,仍可得到较好的结果.更多还原

【Abstract】 This paper studied the effects of large amounts of salts in the simulative matrices on the retention time, peak height and peak area for analysis of anions by ion chromatogra-phy ,and the mechanism was preliminarily explored. The experiments show that the samples with high concentration of some anions cause a relatively shorter retention time and a changed peak shape, but a better result can be obtainded by measurement of peak area and standard spike.Recoveries of various inorganic anions in tap water were 95. 5%, 96. 8% and 95. 2% for chloride, nitrate and sulfate, respectively.更多还原