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Lead Acetate Test Tannins
铅盐法检鞣质
鞣质，可与多种金属离子发生反应，铅盐法便是利用此特性以检鞣质。取适量待测之液，滴加醋酸铅试液。若有鞣质存在，即会迅速生成沉淀。
盖因鞣质具多元酚羟基结构，能与铅离子形成稳定之络合物沉淀。此反应颇为灵敏，于鉴别鞣质时常用之。
操作之际，当留意醋酸铅试液之用量，过量添加或致其他成分亦生成沉淀，干扰结果判断。且需设空白对照，以明辨沉淀是否因鞣质所致。经由此法，可初步判定样品中有无鞣质成分，为后续研究或应用提供依据。
+8615371019725
sales7@alchemist-chem.com
+8615371019725
Yana Yang
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