- 更多网络例句与氯化铅黄相关的网络例句 [注:此内容来源于网络,仅供参考]
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The pigment in colored cotton fibers was extracted by methanol at room temperature. The results of color reactions HCl-Mg reaction, NaBH4 reaction, NaOH reaction, FeCl3 reaction and Pb(Ac2 reaction of the pigment extractive showed that the pigment extracted by methanol was flavone or flavonol with two adjacent hydroxide groups (Table 2, Fig. 1). The results of UV spectral analysis further proved that the pigment extracted by methanol from brown fiber belonged to flavone with two adjacent hydroxide groups in B ring, and that from the green fiber contained not only flavone but also flavonols with two adjacent hydroxide groups both in A ring and B ring and indican replaced a hydroxide group at 3-site of A ring Fig.
通过盐酸-镁粉反应、四氢硼钠还原反应、碱反应、醋酸铅反应、氯化铁反应和紫外光谱吸收的分析表明,甲醇室温提取的棕色棉纤维色素可能是黄酮类化合物,B环上带有邻二酚羟基;甲醇室温提取的绿色棉纤维色素除黄酮类化合物外,还含有3-位羟基被糖甙化的黄酮醇类化合物,A、B环上都带有邻二酚羟基。
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cassel yellow:氯化铅黄
Cassegrainian | 卡塞格伦望远镜 | cassel yellow | 氯化铅黄 | Cassel | 卡塞尔
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Cassegrainian:卡塞格伦望远镜
Cassegrain | 卡塞格伦望远镜 | Cassegrainian | 卡塞格伦望远镜 | cassel yellow | 氯化铅黄
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cassel yellow:氯化铅黄
Cassegrainian || 卡塞格伦望远镜 | cassel yellow || 氯化铅黄 | Cassel || 卡塞尔