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在松香锡铅焊料中,由于松香的存在,普通方法制取的试样一般不能用于化学分析,因为加酸溶解试样时,松香不溶于酸,成为黑色悬浊液很难过滤除去,使后面分析步骤不能进行。因此必须在溶样前将松香除去。作者经过反复试验后,采用熔溶法除松香,既简便,又快速。具体方法如下:1 材料平面光滑的薄铝板一块,薄铝板一端稍往上翘, 平面粗糙的铝板一块,粗铝丝若干长。2 制作方法视试样多少将粗铝丝围成一个圈后,置于光滑铝板中心(铝圈上下稍弯曲、使之与铝板有少许空隙),将
In rosin tin-lead solder, the sample prepared by the ordinary method can not generally be used for chemical analysis due to the presence of rosin, because the rosin does not dissolve in acid when it is dissolved in acid, which makes it difficult to filter out the black suspension Behind the analysis steps can not be carried out. Therefore, rosin must be removed before sample digestion. After repeated testing, the author dissolves the rosin by melt-dissolving method, which is easy and quick. The specific methods are as follows: 1 material flat and smooth thin aluminum plate, one end of the thin aluminum plate slightly upturned, a rough aluminum plate, a few thick aluminum wire length. 2 Production Method Depending on how many specimens will be surrounded by thick aluminum wire into a circle, placed in the center of a smooth aluminum (aluminum ring slightly curved up and down, so that there is a slight gap with the aluminum), will