Abstract A new IS-anionic stationary phase was synthesized to make on-line extraction of the ochratoxin A and B from samples of beer for HPLC. The propyltriethylammonium chloride stationary phase was characterized affecting it's elementary determination and RI specter, respectively. Evaluation of the IS-anionic column for the extraction and quantification of OTA and OTB in beer has shown that the column is suitable for efficient extraction (recovery > 76.5%) and precise analysis. The detection limits for OTA and OTB were 0.03 and 0.07 µg L−1, respectively. The range of detector linearity was 0.03 at 20 µg L−1.

中文翻译：

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用于从啤酒样品中提取赭曲霉毒素 A 和 B 的固定相 IS-阴离子（内表面阴离子）的合成

摘要 合成了一种新型内标阴离子固定相，对啤酒样品中赭曲霉毒素A和B进行在线提取，用于高效液相色谱法。丙基三乙基氯化铵固定相的表征分别影响其元素测定和 RI 光谱。对用于啤酒​​中 OTA 和 OTB 提取和定量的 IS 阴离子色谱柱的评估表明，该色谱柱适用于高效提取（回收率 > 76.5%）和精确分析。OTA 和 OTB 的检测限分别为 0.03 和 0.07 µg L-1。检测器线性范围在 20 µg L-1 时为 0.03。