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AS11-HC是美国DIONEX（戴安）公司继AS9-HC之后推出的大容量阴离子交换分离柱,采用NaOH溶液进行梯度淋洗,适用于分析复杂基体中的阴离子和有机酸,尤其适用于一元羧酸的检测。 AS11-HC阴离子分离柱采用高交联度（55％）、小直径（9μm）的乙基·乙烯基苯-二乙烯基苯多孔基球,基球表面涂覆直径70nm的MicroBead~（TM）阴离子交换涂层,使其柱容量达到了空前的290μeq（250×4mm）。AS11-HC分离柱具有以下优点:（1）进行高浓度样品分析时不会出现过载和峰拖尾现象;（2）通过大体积直接进样检测痕量有机酸和无机阴离子;（3）允许使用更高浓度的淋洗液,从而扩大梯度淋洗的范围。
AS11-HC is a large-capacity anion exchange column introduced by DIONEX Corporation of USA after AS9-HC. It adopts sodium hydroxide solution for gradient elution and is suitable for analyzing anionic and organic acids in complex matrix. It is especially suitable for monocarboxylate Acid detection. AS11-HC anion separation column with a high degree of crosslinking (55%), small diameter (9μm) of ethyl vinyl benzene - divinylbenzene porous baseball surface coated with 70nm diameter MicroBead ~ (TM) Anion exchange coating, the column capacity reached an unprecedented 290μ eq (250 × 4mm). The AS11-HC column has the following advantages: (1) Overloading and peak tailing do not occur when performing high-concentration sample analyzes; (2) Trace organic acids and inorganic anions are detected by bulk direct injection; (3) Use a higher concentration of eluent to expand the range of gradient elution.