The recoveries of the tropane alkaloids were 97.8%-102%.
样品的加标回收率为97.8%~102%。
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Like caffeine, theobromine is a type of alkaloid, which is a huge class of molecules that generally contain rings with at least one nitrogen atom in them, and alkaloids often have physiological effects on humans and other animals.
和咖啡因一样,可可属于生的一种,生是相大的一类,一般来说它的环中会包含至少一个氮原,生通常会使人类及其他动产生生理作用。