以下为句子列表：
英文: A white needle crystal was isolated and purified on systematic extraction of the alkaloid by silica gel column and gradient sublimation from Oxytropis glabra.
中文: 摘要采用生物堿系统提取、矽胶柱层析分离及梯度升华技术从小花棘豆干草粉中分离出一种白色针状结晶。
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英文: The methods such as distn. and silica gel column chromatography were used to sep. the various components of the thickener, and the IR spectrometry, GC-MS combination and ESI-MS were used to certify the structures of the different components.
中文: 用蒸馏和矽胶柱色谱等方法对增稠剂中的各组分进行分离，并用红外光谱法、气质联用和电喷雾质谱法对各组分进行结构鉴定。
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