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近发现有用松香加工伪充乳香,现介绍几种鉴别方法。 1.取粉末少许,平铺于滤纸上观察萤光(波长365nm),乳香呈黄棕色;松香呈紫蓝色。 2.取粗粉3克,加乙醚10毫升,振摇,放置过夜。乳香大多不溶;松香全溶。 3.取粗粉3克,加10％硫酸15毫升,
The recent discovery of the use of rosin processing pseudo-filled frankincense is now described in several identification methods. 1. Take a little powder, spread on filter paper to observe fluorescence (wavelength 365nm), frankincense is yellow-brown; rosin is violet-blue. 2. Take 3 g of coarse powder, add 10 ml of diethyl ether, shake and place overnight. Most of the frankincense is insoluble; rosin is completely soluble. 3. Take 3 grams of coarse powder, add 10% sulfuric acid 15 ml,