一、试样处理将砷铂矿放入离心管中,加入6毫升1:2HNO_3,于水浴上加热,待反应停止后,取出玻管。用水洗涤砷铂矿五次以上。然后加入6毫升1:1 HCl,于水浴上加热(此时溶液变黄,加1滴45%SnCl_2溶液使褪色),10分钟后取下,用水洗净砷铂矿。烘干,用玛(?)研钵小心磨碎,装好备用。 First, the sample processing Add arsenic platinum ore centrifuge tube, add 6 ml 1: 2HNO_3, heated in a water bath, until the reaction stopped, remove the glass tube. Arsenic washing with water five or more times. Then 6 ml of 1: 1 HCl was added and heated in a water bath (the solution turned yellow at this point, 1 drop of 45% SnCl2 solution was added to cause discoloration). After 10 minutes, it was removed and the arsenic platinum mine was washed with water. Dry, carefully grind with a mortar (?) Mortar, and pack well for use.