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我们用能量色散X射线分析法分析测定了八种青海大黄及五种大黄制剂中的无机元素,现将分析方法及测定结果报道如下: 一、试样制备:样品有两类:①青海大黄生药(由中国土产畜产进出口公司取样八种),将市售大黄生药(根茎)用高纯钛刀切成薄片,烘干,混匀后称取1～2克置于瓷坩埚内,然后放入马福炉中,在500℃温度下灰化8～12小时,冷却后加入少量6N硝酸溶解灰分,然后按干重加入400ppm钇(y(NO_3)_3形式)溶液作内标准,混匀后移取约30微升滴在6毫微米厚涤纶薄膜上,
We used energy dispersive X-ray analysis to analyze the inorganic elements in eight kinds of Qinghai rhubarb and five kinds of rhubarb preparations. Now we report the analysis methods and measurement results as follows: 1. Sample preparation: There are two types of samples: 1 Qinghai rhubarb crude drug (Sampling of eight kinds by the China Native Produce and Animal Products Import and Export Corporation.) The commercially available rhubarb crude drug (rhizome) was cut into thin slices with a high-purity titanium knife, dried, and weighed and weighed in the same manner as 1 to 2 g of the porcelain crucible. Into the muffle furnace, ashing at 500 °C temperature for 8 to 12 hours, cooling after adding a small amount of 6N nitric acid to dissolve the ash, and then according to dry weight add 400ppm yttrium (y (NO_3) _3 form) solution as internal standard, after mixing, transfer About 30 microliter drops on 6 nanometer thick polyester film,