Preseparation Method for Ion Chromatography of Inorganic Anions in Colorants
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摘要: 系統分析了3種不同類型的"吸附劑"(聚酰胺、活性炭和陰離子交換樹脂)對色素的吸附條件和吸附性能及7種無機陰離子的洗脫行為。研究結果表明,三者均可用于5種合成食用色素中7種無機陰離子的預分離,回收率達95%~105%,有效地消除了食用色素中無機陰離子分析的基體干擾。Abstract: Adsorption character and conditions of the five colorants on three different kinds of adsorbent (polycaprolactam powder,active carbon,anion exchange resin)were systematically investigated.Elution behavior of seven inorganic anions was also studied.The results shows that all the three kinds of adsorbent can be used for preseparation of seven inorganic anions in the five synthetic colorants.Recoveries are 95%~105% and matrix interference in ion chromatography is eliminated effectively.
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Key words:
- colorants /
- inorganic anion /
- ion chromatography /
- preseparation
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