询问个方法

应助达人

楼主能不能给出上下文?

Sample Preparation, HPLC Analysis, and Peak Characterization. Juice samples were separated into two fractions,
a methanol fraction and a 0.5 % ammonia in methanol fraction, by use of Polyamide 6. Methodology for sample preparation,
HPLC separation, and peak characterization are reported in another paper (Rommeland Wrolsted, 1993). Ellagicacid (Sigma
Chemical Co., St. Louis, MO) was used as a standard to characterize ellagic acid and its derivatives in juice. Absorbance
spectra of ellagic acid and ellagic acid derivatives were very similar and very different from those of flavonols (e.g., quercetin
3-glucuronide); examples of spectra are shown in Figure lb.

楼主不会是断错句了吧，那个点是句号吧。Methodology是样品制备的溶剂吧。 Polyamide 6是一种填料或什么别的物质，6是型号

貌似是哦，这篇文献是93年的，写的很不具体，我都看糊涂了，见笑，主要就是想知道他的提取方法，可是这段里完全没看出来他的方法。