This paper is to discuss the feasibility of refining taurine in the extract of Meretrix meretrix by column chromatography and determination of taurine by spectrophotometry.

作者主要探索用离子交换树脂柱析法提纯文蛤提取液中牛磺酸及用吸收光谱法测定牛磺酸的可行性。

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Conclusion: the method is simple, rapid and of high sensitivity, it is an available method for the determination of residual organic solvents in Ginkgo Biloba leaves extract.

结论：该方法简便快速，灵敏度高，可作为银杏叶提取物中有机溶剂残留量的测定方法。

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The paper reports a basic method to extract natural pigment from sugarcane skin and carries out the determination of pigment by the ultraviolet and visible light spectrum and infrared spectrum.

研究了以紫色甘蔗皮为原料提取色素的基本方法，并进行了紫外可见光谱、红外光谱的测定。

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And it was their determination that this course of action would be the best one to extract the most amount of information.

WHITEHOUSE: Press Briefing by Deputy Press Secretary Bill Burton