By replacing sulphoacid and silver sulfate solution by combining acid of sulphoacid and phosphoric acid in the back-flow process,the time is shortened and analysis is quicker.
磷混合酸代替酸—酸银溶液进行回流操作可极大地缩短回流时间,提高分析速度,得到满意结果。
By replacing sulphoacid and silver sulfate solution by combining acid of sulphoacid and phosphoric acid in the back-flow process,the time is shortened and analysis is quicker.
磷混合酸代替酸—酸银溶液进行回流操作可极大地缩短回流时间,提高分析速度,得到满意结果。
The catechin, ursolic were determined by HPLC.The polysaccharide and tannide were determined by sulphoacid-phenol and complexometric titration methods respectively.
HPLC法测定儿茶素和熊果酸,酸-苯酚法测定多糖,络合滴定法测定鞣质的含量。
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