The total flavanoids contents of Hotan walnut kernel septum membranes in the different extraction solvents by using spectrophotometricmethod with rutin as reference substance.
以芦丁为对照品，用分光光度法测定不同溶剂提取的和田核桃仁内隔膜中总黄酮含量。
2
A method for the spectrophotometric determination of trace Cu 2+ with flow injection liquid liquid extraction separation and pre concentration was developed.